Опыт работы с Python

bash retry cmd func

2018-08-30T16:55:00.002+05:00

retry.sh:

#!/bin/bash

function retry()
{
    local n=0
    local try=$1
    local cmd="${@: 2}"
    local exit_code=0
    [[ $# -le 1 ]] && {
    echo "Usage $0 "; }

    until [[ $n -ge $try ]]
    do
        $cmd && exit_code=$? && break || {
            echo "Command Fail.."
            ((n++))
            echo "retry $n ::"
            sleep 1;
            }
    done
    return $exit_code
}

retry $*

Usage:

./scripts/retry.sh 2 pytest

Linode change Outgoing and Incoming traffic to Priv Out and Priv In traffic

2017-07-09T01:08:00.001+05:00

payments.google.com/merchant and paid date

2017-01-19T20:12:00.000+05:00

In merchant system

Распознавание кириллической яндекс капчи с вероятностью > 60%

2016-12-06T18:27:00.002+05:00

latex math to png

2016-11-21T22:16:00.002+05:00

import getopt
import os
import subprocess
import sys
import tempfile


def __build_preamble():
    preamble = '\documentclass[a4paper, 12pt]{article}\n'
    preamble += \
"""
\usepackage[unicode]{hyperref}
\usepackage{mathtext}
\usepackage[T1, T2A]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage[english, russian]{babel}
\\vskip 0.5 cm
\pagestyle{empty}
"""
    preamble += "\\begin{document}\n"
    return preamble

def math2png(eqs, outdir, prefix = '', size = 1):
    # Set the working directory
    workdir = tempfile.gettempdir()
    # Get a temporary file
    fd, texfile = tempfile.mkstemp('.tex', 'eq', workdir, True)
    # Create the TeX document
    with os.fdopen(fd, 'w+') as f:
        f.write(__build_preamble())
        for eq in eqs:
            f.write("$%s$\n" % eq.strip())
        f.write('\end{document}')

    f.close()

    # Generate the DVI file
    latexcmd = 'latex -halt-on-error -output-directory %s %s' % (workdir, texfile)
    _run(latexcmd.split())
    # Convert the DVI file to PNG's
    dvifile = texfile.replace('.tex', '.dvi')
    outprefix = os.path.join(outdir, prefix)
    dvicmd = "dvipng -T tight -x %i -z 9 -bg Transparent "\
            "-o %s%%d.png %s" % (size * 1000, outprefix, dvifile)
    _run(dvicmd.split())

def _run(cmd):
    env = os.environ.copy()
    env.update(dict(
        LANG='ru_RU.UTF-8',
        LC_CTYPE='ru_RU.UTF-8',
        HOME='/root',
    ))
    subprocess.Popen(
        cmd,
        env=env,
        stdout=subprocess.PIPE,
        stderr=subprocess.PIPE,
    ).communicate()

hideme proxy python

2016-11-21T22:07:00.003+05:00

#encoding:utf-8
import httplib
import mechanize
import random
import time
import urllib
import urllib2


def initial_hideme():
    url = 'http://hideme.ru/login'
    params = urllib.urlencode({'c': '193477955'})
    urllib.urlopen(url, params)

class IpProxyDNotExist(Exception):

    pass


def get_good_proxy():

    goods = []

    test_url = 'http://example.com'
    count = 4

    def check(ip):
        br = mechanize.Browser()
        br.set_proxies({'http': ip})
        br.set_handle_robots(False)
        try:
            br.open(test_url, timeout=2)
        except (urllib2.URLError, httplib.BadStatusLine):
            pass
        else:
            goods.append(ip)

    proxy_list = get_proxy_list()
    random.shuffle(proxy_list)
    proxy_list = proxy_list[:count]
    for num, ip in enumerate(proxy_list):
        if goods:
            continue
        check(ip)

    try:
        ret = goods[0]
    except IndexError:
        raise IpProxyDNotExist

    return ret


def get_proxy_list():
    response = urllib2.urlopen('http://hideme.ru/api/proxylist.php?anon=4&out=plain')
    response_text = response.read().strip()
    ret = response_text.split()
    return ret

Код сайта kontrolnaya-rabota.ru

2016-11-21T19:36:00.001+05:00

equations/detailed.py:

# -*- coding:  utf-8 -*-
from hideme_proxy import get_good_proxy
from mechanize._response import response_seek_wrapper
from wolfram.utils import get_appid, get_user_agent
import mechanize
import time
import urllib
import random
import re
import xml.etree.ElementTree as ET


def get_inequal_detailed(list_data):
    expressions = []
    for data in list_data:
        solve1 = data['solve1']
        solve2 = data['solve2']
        oper = data['oper']
        expression = '%s%s%s' % (solve1, oper, solve2)
        expressions.append(expression)
    text = ' and '.join(expressions)
    expression_quote = urllib.quote(text)
    appid = get_appid()
    url_pattern = 'http://api.wolframalpha.com/v2/query?input=Solve+{0}&appid={1}&format=plaintext'
    url = url_pattern.format(expression_quote, appid)
    br = mechanize.Browser()
    br.set_handle_robots(False)
    br.set_handle_equiv(False)
    ip = get_good_proxy()
    br.set_proxies({'http': ip})
    ua = get_user_agent()
    br.addheaders = [('User-agent', ua)]
    br.open(url)
    response = br.response()
    response_text = response.read()
    root = ET.fromstring(response_text)
    if root.get('success') == 'true':
        elems = root.findall("./pod[@id='Result']/subpod/plaintext")
        ret = [el.text for el in elems]
        return ret
    raise NotImplementedError(response_text)


def get_equal_detailed(data):
    solve1 = data['solve1']
    solve2 = data['solve2']
    expression = '%s=%s' % (solve1, solve2)
    expression_quote = urllib.quote(expression)
    appid = get_appid()
    url_pattern = 'http://api.wolframalpha.com/v2/query?input=Solve+{0}&appid={1}&format=plaintext&podstate=Result__Step-by-step+solution'
    url = url_pattern.format(expression_quote, appid)
    ip = get_good_proxy()
    br = mechanize.Browser()
    br.set_proxies({'http': ip})
    ua = get_user_agent()
    br.addheaders = [('User-agent', ua)]
    br.set_handle_robots(False)
    br.set_handle_equiv(False)
    br.open(url)
    response = br.response()
    response_text = response.read()
    root = ET.fromstring(response_text)
    if root.get('success') == 'true':
        text = root.find("./pod//subpod[@title='Possible intermediate steps']/plaintext").text
        return text
    raise NotImplementedError(response_text)


def test_appid(appid):
    url = 'http://api.wolframalpha.com/v2/query?input=Solve+x^2-1&appid={0}&format=plaintext&podstate=Result__Step-by-step+solution'.format(appid)
    ip = get_good_proxy()
    br = mechanize.Browser()
    br.set_proxies({'http': ip})
    ua = get_user_agent()
    br.addheaders = [('User-agent', ua)]
    br.set_handle_robots(False)
    br.set_handle_equiv(False)
    br.open(url)
    response = br.response()
    response_text = response.read()
    root = ET.fromstring(response_text)
    if root.get('success') == 'true':
        return 'OK'
    return response_text

buy/views.py:

# encoding:utf-8
from django.conf import settings
from django.core.exceptions import ValidationError
from django.core.urlresolvers import reverse
from django.shortcuts import redirect, render
from django.utils.translation import ugettext as _
from django.views.decorators.cache import cache_page
from latexmath2png import math2png
from s.buy.forms import FreeForm, FreeFormWithoutCaptha
from s.equal_one.detailed import get_equal_detailed
from settings import at_project_root
from wolfram.base import get_solution_class
import datetime
import hashlib
import re
import time


def free_old(request):
    return redirect('/s/', permanent=True)


def free(request):
    form = FreeForm(request.POST or None)
    redirect_to = None
    if form.is_valid():
        cleaned_data = form.cleaned_data
        key = generate_key()
        base_url = reverse('buy-complete', kwargs={'key': key})
        query_string = form.get_request_string(cleaned_data)
        redirect_to = '%s?%s' % (base_url, query_string)
    context = {'free_form': form, 'redirect_to': redirect_to}
    template_name = 's/buy/free.html'
    return render(request, template_name, context)


@cache_page(60 * 60)
def buy_complete(request, key):

    user_agent = request.META.get('HTTP_USER_AGENT')

    if 'Mediapartners-Google' in user_agent or \
        'YandexDirect' in user_agent:
        return free(request)

    if key != generate_key():
        return redirect('/s/')
    form = FreeFormWithoutCaptha(request.GET or None)
    if not form.is_valid():
        return redirect(reverse('s-main'))
    module = form.cleaned_data['module']
    data = form.cleaned_data['data']
    if module in ['diff', 'limit']:
        SolutionClass = get_solution_class(module)
        text = SolutionClass(data, with_proxy=False).get_text()
    elif module in ('indefinite', 'definite'):
        SolutionClass = get_solution_class('indefinite')
        text = SolutionClass(data).get_text()
    elif module == 'equal':
        text = get_equal_detailed(data)
    for trans in BLOCK_I18N:
        text = text.replace(trans, _(trans))
    text = text.replace('\\n', '\n')
    text = text.replace('\\/', '/')
    if 'wolfram' in text.lower():
        raise ValidationError(u'wolfram text on solution')
    tex_body = text_to_tex(text)
    prefix = hashlib.md5(tex_body.encode('utf-8')).hexdigest()
    try:
        math2png(
            [tex_body.encode('utf-8')],
            'media/buy',
            prefix=prefix,
        )
    except:
        with_simple_text = True
    else:
        with_simple_text = False

    time.sleep(3)
    template_name = 's/buy/complete.html'
    context = {
        'tex_body': tex_body,
        'prefix': prefix,
        'with_simple_text': with_simple_text,
        'text': text,
    }
    return render(request, template_name, context)


def i18n_blocks():
    fn = at_project_root('kr/wolfram.trans')
    ret = open(fn).read().strip().decode('utf-8').split('\n')
    ret = sorted(ret, key=lambda s: len(s), reverse=True)
    return ret

BLOCK_I18N = i18n_blocks()


def generate_key():
    today_text = datetime.date.today().strftime('%F')
    open_key = '%s-%s' % (settings.SECRET_KEY, today_text)
    key = hashlib.md5(open_key).hexdigest()
    return key


def text_to_tex(text):
    fp = '(?:cos|sin|tan|atan|csc|cot|sec|log|ln|sqrt|sinh|cosh|arccos|arcsin|arccosh|arcsinh|arctg|arcctg|atan)'

    ac = '[_a-zA-Z@^\d.]'

    ac_p = '[_a-zA-Z@^{}\d.]'

    text = text.replace('d/dx', '@@@')
    text = text.replace('tan^(-1)', 'arctg')
    text = text.replace('cos^(-1)', 'arccos')
    text = text.replace('sin^(-1)', 'arcsin')
    text = text.replace('cot^(-1)', 'arcctg')
    text = re.sub(r'\b(sec)\b', '1/sin', text)
    text = re.sub(r'd(sec)\b', 'd 1/sin', text)
    text = re.sub(r'\b(csc)\b', '1/cos', text)
    text = re.sub(r'd(csc)\b', 'd 1/cos', text)
    text = re.sub(r'\b(log)\b', 'ln', text)
    text = re.sub(r'd(log)\b', 'd log', text)
    text = re.sub(r'\b(cot)\b', 'ctg', text)
    text = re.sub(r'd(cot)\b', 'd ctg', text)
    text = re.sub(r'\b(tan)\b', 'tg', text)
    text = re.sub(r'd(tan)\b', 'd tg', text)

    text = re.sub(r'lim_\(([^\)]+)\)', r'lim_{\1}', text)

    text = re.sub(r'(%(fp)s)\^%(b)s\(' % {
        'fp': fp, 'b': get_bucket_pattern_by_level(4)[2:-2]
    }, r'\1^{\2}(', text)

    A = []
    j = 0
    for i in range(5):
        list_expr = set(re.findall(r'(%(fp)s*\([^\(\)]+\))' % {'fp': fp}, text))
        list_expr = sorted(list_expr, key=lambda expr: len(expr))
        list_expr.reverse()
        for bracket in list_expr:
            text = text.replace(bracket, '__III%s__' % j)
            A.append(bracket)
            j += 1

    for j, bucket in enumerate(A):
        in_bucket = bucket
        if bucket.startswith('('):
            in_bucket = in_bucket[1:-1]
        in_bucket = re.sub(r'(%(fp)s*%(ac_p)s+)/(%(fp)s*%(ac_p)s+)' % {
            'fp': fp, 'ac_p': ac_p
        }, r'\\frac{\1}{\2}', in_bucket)

        in_bucket = re.sub(r'(%(ac)s+)\^(%(ac)s+)' % {
            'ac': ac
        }, r'\1^{\2}', in_bucket)
        if bucket.startswith('('):
            A[j] = '(%s)' % in_bucket
        else:
            A[j] = in_bucket

    text = re.sub(r'(%(fp)s*%(ac_p)s+)/(%(fp)s*%(ac_p)s+)' % {
        'fp': fp, 'ac_p': ac_p
    }, r'\\frac{\1}{\2}', text)
    text = re.sub(r'(%(ac)s+)\^(%(ac)s+)' % {'ac': ac}, r'\1^{\2}', text)

    for i in range(5):
        for j, backet in enumerate(A):
            text = text.replace('__III%s__' % j, backet)

    text = text.replace('= | ', '\\\\\\\\ = ').replace(' | ', '\\\\\\\\').replace(' ', '\;').replace('\n', '\\\\\\\\')
    text = text.replace("\\'", "'")

    text = re.sub(r'{\(([^{}]+)\)}', r'{\1}', text)

    text = text.replace('@@@', '\\frac{d}{dx}')
    text = text.replace('integral', '\\int')
    text = text.replace('·', u'*')
    text = text.replace('>infinity', u'>oo')
    text = text.replace('>-infinity', u'>-oo')
    return text


def get_bucket_pattern_by_level(level):
    list_res = []
    b0 = '[^\(\)]'
    c = '%s+' % b0
    list_res.append(c)
    for i in range(level):
        b = '\((%s)\)' % '|'.join(list_res)
        c = '(?:(?:\((?:%s)\))|%s)+' % (b[3:-3], b0)
        list_res.append(c)
    return b

buy/urls.py:

from django.conf.urls.defaults import patterns, url

urlpatterns = patterns('s.buy.views',
    url(r'^free/$',  'free_old' , name='free-old'),
    url(r'^besplatno/$',  'free' , name='free'),
    url(r'^complete/(?P[0-9a-f]+)/$',  'buy_complete', name='buy-complete'),
)

buy/forms.py

# -*- coding: utf8 -*-
from s.models import Ads, ExcludeUrl
from captcha.fields import CaptchaField, CaptchaTextInput
from django import forms
import json
import urllib


BUY_VERSION = 2


class FreeFormWithoutCaptha(forms.Form):

    data = forms.CharField(widget=forms.HiddenInput)
    module = forms.CharField(widget=forms.HiddenInput)

    def clean_data(self):
        data = self.cleaned_data['data']
        try:
            data = json.loads(data)
        except:
            raise forms.ValidationError('No load json')
        return data

    def get_request_string(self, cleaned_data):
        data = cleaned_data['data']
        data = json.dumps(data)
        data = urllib.quote(data)
        module = cleaned_data['module']
        req_string = 'module=%(module)s&data=%(data)s' % {
            'module': module, 'data': data,
        }
        return req_string


if BUY_VERSION == 1:


    class FreeForm(FreeFormWithoutCaptha):

        url = forms.URLField(
            help_text=(
                u'URL страницы, где содержится активная ссылка на мой сайт'
            ), label=u'Url страницы',
        )
        captcha = CaptchaField()

        def __init__(self, *args, **kwargs):
            super(FreeForm, self).__init__(*args, **kwargs)
            self.fields['captcha'].widget.attrs = {'autocomplete': "off"}

        def clean_url(self):
            url = self.cleaned_data['url'].lower()
            exclude_urls = ExcludeUrl.objects.all().values_list('url', flat=True)
            for exclude_url in exclude_urls:
                if url.startswith('http://' + exclude_url) or \
                    url.startswith('http://www.' + exclude_url):
                    raise forms.ValidationError(
                        (u'Котэ следит за тобой. Пожалуйста, добавьте ссылку себе на '
                         u'сайт, форум или блог!')
                    )
            return url

        def get_ads(self):
            ads = Ads.objects.random()
            return ads

elif BUY_VERSION == 2:

    class FreeForm(FreeFormWithoutCaptha):

        captcha = CaptchaField()

        def __init__(self, *args, **kwargs):
            super(FreeForm, self).__init__(*args, **kwargs)
            self.fields['captcha'].widget.attrs = {'autocomplete': "off"}

        def get_ads(self):
            ads = Ads.objects.random()
            return ads

wolfram/utils.py

# coding:utf-8
from settings import at_project_root
import random


def get_appid():
    filename = at_project_root('kr/wolfram.keys')
    appid_list = open(filename).read().strip().split()
    random.shuffle(appid_list)
    appid = appid_list[0]
    return appid


def get_user_agent():
    filename = at_project_root('kr/wolfram.ua')
    ua_list = open(filename).read().strip().split('\n')
    assert len(ua_list) > 1
    random.shuffle(ua_list)
    ua = ua_list[0]
    return ua

wolfram/base.py

#encoding:utf-8
from hideme_proxy import get_good_proxy, IpProxyDNotExist
from wolfram.utils import get_user_agent, get_appid
import httplib
import mechanize
import urllib
import urllib2
import xml.etree.ElementTree as ET
import zlib


_open_url_error_classes = (
    urllib2.HTTPError,
    urllib2.URLError,
    IOError,
    httplib.BadStatusLine,
    httplib.IncompleteRead,
    zlib.error,  # for gzip compressed responses
    IpProxyDNotExist,
)


class InternetError(Exception):

    pass


def get_solution_class(class_name):
    return SOLUTION_CLASSES[class_name]


SOLUTION_CLASSES = {}
def register_solution_class(class_name):
    def wrapper(cls):
        SOLUTION_CLASSES[class_name] = cls
        return cls
    return wrapper


class _InternetObject(object):

    def _initial_browser(self):
        br = mechanize.Browser()
        ua = get_user_agent()
        br.addheaders = [('User-agent', ua)]
        br.set_handle_robots(False)
        br.set_handle_equiv(False)
        return br

    def _get_rawurlencode(self, params):
        items = []
        for key, val in params.items():
            new_val = urllib.quote(val)
            item = '{0}={1}'.format(key, new_val)
            items.append(item)
        ret = '&'.join(items)
        return ret

    def get_params(self):
        raise NotImplementedError


class DetailedSolution(_InternetObject):

    base_url = 'http://api.wolframalpha.com/v2/query'

    def __init__(self, data, with_proxy=True):
        self.data = data
        self.with_proxy = with_proxy
        self.br = self._initial_browser()
        self.appid = get_appid()

    def __str__(self):
        super_str = super(DetailedSolution, self).__str__()
        ret = '{0} with appid={1}'.format(super_str, self.appid)
        return ret

    def get_text(self):
        response_text = self.get_response_text()
        root = ET.fromstring(response_text)
        if root.get('success') == 'true':
            xpath = "./pod//subpod[@title='Possible intermediate steps']/plaintext"
            text = root.find(xpath).text
            return text
        raise NotImplementedError(response_text)

    def get_response_text(self):
        if self.with_proxy:
            try:
                ip = get_good_proxy()
            except _open_url_error_classes, exc:
                raise InternetError(exc)
            self.br.set_proxies({'http': ip})
        params = self.get_params()
        params.update({
            'format': 'plaintext',
            'appid': self.appid,
        })
        url = self.base_url + '?' + \
            self._get_rawurlencode(params)
        try:
            self.br.open(url)
            response = self.br.response()
            response_text = response.read()
        except _open_url_error_classes, exc:
            raise InternetError(exc)
        return response_text


@register_solution_class('limit')
class LimitSolution(DetailedSolution):

    def get_params(self):
        data = self.data
        x0 = data['x0']
        function = data['function']
        expression = 'lim %s x->%s' % (function, x0)
        ret = {
            'input': expression,
            'podstate': 'Limit__Step-by-step solution',
        }
        return ret


@register_solution_class('indefinite')
class IndefiniteSolution(DetailedSolution):

    def get_params(self):
        data = self.data
        function = data['function']
        expression = 'integrate %s' % function
        ret = {
            'input': expression,
            'podstate': 'IndefiniteIntegral__Step-by-step solution',
        }
        return ret


@register_solution_class('diff')
class DiffSolution(DetailedSolution):

    def get_params(self):
        data = self.data
        function = data['function']
        expression = 'derivative of %s' % function
        ret = {
            'input': expression,
            'podstate': 'Input__Step-by-step solution',
        }
        return ret


@register_solution_class('series-number')
class SeriesNumberSolution(DetailedSolution):

    def get_result(self):
        ret = {}
        response_text = self.get_response_text()
        root = ET.fromstring(response_text)
        if root.get('success') == 'true':
            nods = root.findall('./pod[@id="ConvergenceTests"]/subpod/plaintext')
            tests = map(lambda n: n.text, nods)
            ret['tests'] = tests
            return ret
        raise NotImplementedError(response_text)

    def get_params(self):
        data = self.data
        function = data['function']
        n = data['n']
        n0 = data['n0']
        nm = data['nm']
        infinity = data['infinity']
        if infinity:
            nm = 'oo'
        expression = 'Sum[{0}, {1}, {2}, {3}]'.format(function, n, n0, nm)
        ret = {
            'input': expression,
        }
        return ret


@register_solution_class('power-series')
class PowerSeriesSolution(DetailedSolution):

    def get_result(self):
        ret = {}
        response_text = self.get_response_text()
        root = ET.fromstring(response_text)
        if root.get('success') == 'true':
            nods = root.findall('./pod[@id="ConvergenceTests"]/subpod/plaintext')
            tests = map(lambda n: n.text, nods)
            ret['tests'] = tests
            return ret
        raise NotImplementedError(response_text)

    def get_params(self):
        expression = 'Sum of {function}'.format(**self.data)
        ret = {
            'input': expression,
        }
        return ret


@register_solution_class('system-diff')
class SystemDiffSolution(DetailedSolution):

    def get_result(self):
        ret = {}
        response_text = self.get_response_text()
        root = ET.fromstring(response_text)
        if root.get('success') == 'true':
            nods = root.findall('./pod[@id="DifferentialEquationSolution"]/subpod/plaintext')
            solves = map(lambda n: n.text, nods)
            solves = map(lambda s: s.replace('_', ''), solves)
            ret['solves'] = solves
            return ret
        raise NotImplementedError(response_text)

    def get_params(self):
        expression = ' and '.join('='.join(i) for i in self.data['equations'])
        ret = {
            'input': expression,
        }
        return ret

widgetes/jscalendar.py

from django import forms
from django.template.loader import render_to_string

class JSCalendarWidget(forms.DateTimeInput):
    class Media:
        css = {
            'all': ('javascript/jscalendar-1.0/calendar-system.css',)
        }
        js = ('javascript/jscalendar-1.0/calendar.js',
              'javascript/jscalendar-1.0/calendar-setup.js',
              'javascript/jscalendar-1.0/lang/calendar-ru-UTF.js',)

    def render(self, name, value, lang='ru', attrs=None):
        value = value or ''
        return render_to_string("widgets/jscalendar.html", locals())

buy/complete.html

{% extends "s/sbase.html" %}
{% block title %}Подробное решение бесплатно!{% endblock %}
{% block head %}
    
{% endblock %}
{% block crumbs %}Больше решений!{% endblock %}
{% block base_table %}
    
        Подробное решение: ответ
        {% include "partner_block.html" %}
        {% if with_simple_text %}
            {{ text }}
        {% else %}
          
              
          
        {% endif %}
        {% include "other-social.html" %}
        {% include "partner_block.html" %}
    
{% endblock %}

buy/definite.tex

\documentclass[a4paper, 12pt]{article}
\usepackage[unicode]{hyperref}
\usepackage{mathtext}
\usepackage[T1, T2A]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage[english, russian]{babel}
\vskip 0.5 cm

\begin{document}

${{ tex_body }}$

\end{document}

buy/diff.tex

\documentclass[a4paper, 12pt]{article}
\usepackage[unicode]{hyperref}
\usepackage{mathtext}
\usepackage[T1, T2A]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage[english, russian]{babel}
\vskip 0.5 cm

\begin{document}

${{ tex_body }}$

\end{document}

buy/free_form.html


Для того, чтобы получить подробное решение бесплатно, пожалуйста, проделайте следующие действия:


  {% if not request.COOKIES.ilikeit %}
  
      Скопируйте ссылку и 

      разместите вконтакте или др. сайте:
      
      
      

  
  {% endif %}
  Введите цифры на рисунке

{% csrf_token %}
  
    {{ free_form }}

buy/free.html

{% extends "s/sbase.html" %}
{% load i18n %}
{% block head %}
 {% if redirect_to %}
 
 
 {% endif %}
{% endblock %}
{% block title %}Подробное решение бесплатно!{% endblock %}

{% block content %}
  Подробное решение
  {% include "partner_block.html" %}
  {% if redirect_to %}
   Производится проверка размещения ссылки, пожалуйста подождите чуть больше 1 мин...
   Если ссылка на наш сайт будет найдена, то Вам будет предложено решение.

   Если программа не найдет ссылку вида http://kontrolnaya-rabota.ru, то Вы не получите файла, но можно попробовать разместить ссылку на сайт http://kontrolnaya-rabota.ru/s/ снова. 

   Назад.

  {% else %}
   Хотите получить подробное решение с описанием действий?
   {% include "s/buy/free_form.html" %}
  {% endif %}
  {% include "partner_block.html" %}
{% endblock %}

buy/indefinite.tex

\documentclass[a4paper, 12pt]{article}
\usepackage[unicode]{hyperref}
\usepackage{mathtext}
\usepackage[T1, T2A]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage[english, russian]{babel}
\vskip 0.5 cm

\begin{document}

${{ tex_body }}$

\end{document}

buy/limit.html

\documentclass[a4paper, 12pt]{article}
\usepackage[unicode]{hyperref}
\usepackage{mathtext}
\usepackage[T1, T2A]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage[english, russian]{babel}
\vskip 0.5 cm

\begin{document}

${{ tex_body|safe }}$

\end{document}

python regex lazy re.compile

2016-11-09T15:43:00.005+05:00

import re


class _Lazy(object):

    __slots__ = ['pattern', 'kwargs', 'compiled']

    def __init__(self, pattern, **kwargs):
        self.pattern = pattern
        self.kwargs = kwargs
        self.compiled = None

    def __getattr__(self, name):
        if self.compiled is None:
            self.compiled = re.compile(self.pattern, **self.kwargs)
        return self.compiled.__getattribute__(name)


def lazy_compile(pattern, **kwargs):
    return _Lazy(pattern, **kwargs)

Use:

In [2]:

In [2]: lazy_compile(r'[a-z]')
Out[2]: <__main__._Lazy at 0x11095c088>

In [3]: c = lazy_compile(r'[a-z]')

In [4]: c.findall('sdsd sdsds aq, $A fddf')
Out[4]: ['s', 'd', 's', 'd', 's', 'd', 's', 'd', 's', 'a', 'q', 'f', 'd', 'd', 'f']

Upload a folder to s3

2015-11-23T11:28:00.000+05:00

from boto3.session import Session
import os

session = Session(
    aws_access_key_id='xxx',
    aws_secret_access_key='yyy',
    region_name='eu-central-1', # Put your region name
)

resource = session.resource('s3')

bucket = resource.Bucket('your_bucket_name')

from_dir = 'your_folder_name'

for fn in os.listdir(from_dir):
    file_obj = open(os.path.join(from_dir, fn), 'rb')

    to_folder = ''

    bucket.put_object(
        Key=os.path.join(to_folder, os.path.basename(file_obj.name)),
        Body=file_obj.read(),
    )
    print '%s loaded' % fn

Integral Step-by-Step Calculator on Android!

2014-01-19T02:45:00.002+06:00

I write my first android application.

I used.. python!

You can write android application on python - use python framework kivy
(write a application supported on many operation systems: mac, windows, linux, android, ios, and sony play station and other)

So, my first android application - Integral Step-by-Step Calculator (link to google play)

This app calculate a integrals:

Offline Integral Step-By-Step Calculator (without online and internet):
* A indefinite integral
* A definite integral
* A improper integral

Large Scale Machine Learning and Other Animals: Installing BLAS/Lapack/ITPP on Amazon EC2/Ubuntu L...

2014-01-06T06:12:00.001+06:00

Installing BLAS/Lapack/ITPP on Amazon EC2/Ubuntu Linux
BLAS/Lapack are efficient matrix math libraries. The following instructions explains how to install them for Amazon EC2 (Ubuntu maverick version, and Amazon Linux). It++ (itpp) is a popular c++ wrapper for blas/lapack.

DISLAIMER: The below instructions are for 64 bit machines. For 32 bit machines follow other instructions: http://bickson.blogspot.com/2011/06/graphlab-pmf-on-32-bit-linux.html

FOR LAZY READERS:
Just use Amazon EC2 public image ami-c21eedab (Ubuntu)

INSTALLATION VIA YUM/APT-GET
Try to install itpp using the following command:

sudo yum install libitpp-dev

Or

sudo apt-get install libitpp-dev

TIP: You may also want to install libitpp7-dbg using the yum/apt-get command.
It is not mandatory, but it helps debugging when you link against libitpp_debug.so
(instead of libitpp.so).

If the above worked then we are done. If not, you will need to follow
instructions below. Thanks to Udi Weinsberg for this tip.

FOR ADVANCED USERS:

0) Start with an Ubuntu image like ami-641eed0d, or an Amazon AMI image like:

1) Install required packages. For Ubuntu:

sudo apt-get install --yes --force-yes automake autoconf libtool* gfortran

For Amazon Linux:

sudo yum install -y automake autoconf libtool* gcc-gfortran

2) Install lapack.
Here again their are two options:

The easy way is to simply (On Ububtu)

sudo apt-get install --yes --force-yes liblapack-dev

On Amazon Linux:

sudo yum install -y lapack-devel blas-devel

Thanks Akshay Bhat from Cornell for this tip!
If the liblapack setup was successful, go to step 3.

If the above command DOES NOT work for you (depends on your OS and setup) you will need to install lapack manually. The procedure is explained in steps a-c below.

a) Download and prepare the code

wget http://www.netlib.org/lapack/lapack.tgz
tar xvzf lapack.tgz
cd lapack-3.3.0 //if version number changes, change here to the right directory
mv make.inc.example make.inc

b) edit make.inc and add -m64 -fPIC flag to fortran compiler options:
# FORTRAN, OPTS, NOOPT, LOADER

c) compile

make blaslib
make

If everthing went OK, test will be run for a couple of minutes
and the files blas_LINUX.a and lapack_LINUX.a will be created at the main directory

3) setup LDFLAGS

export LDFLAGS="-L/usr/lib -lgfortran"

4) Download and install itpp from

wget http://sourceforge.net/projects/itpp/files/itpp/4.2.0/itpp-4.2.tar.gz
tar xvzf itpp-4.2.tar.gz
cd itpp-4.2
./autogen.sh

If you installed Lapack from yum/apt-get, you should use the following command:

./configure --without-fft --with-blas=/usr/lib64/libblas.so --with-lapack=/usr/lib64/liblapack.so --enable-debug CFLAGS=-fPIC CXXFLAGS=-fPIC CPPFLAGS=-fPIC

Where /usr/lib64/ is the place where lapack was installed.

If you installed lapack from source, use the following command

./configure --without-fft --with-blas=/home/ubuntu/lapack-3.3.0/blas_LINUX.a --with-lapack=/home/ubuntu/lapack-3.3.0/lapack_LINUX.a CFLAGS=-fPIC CXXFLAGS=-fPIC CPPFLAGS=-fPIC

make
sudo make install

Note: If you installed lapack from yum/apt-get, don't forget to add the -lblas -llapack linker flag when you compile against lapack/blas.

Verifying installation
To verify that installation went Ok, run the following commands:

itpp-config --cflags
itpp-config --libs

1) The command itpp-config should be available from shell.
2) The right installation path should appear as output.

Known issues you may encounter:
Problem:

*** Warning: Linking the shared library libitpp.la against the^M
*** static library /usr/lib64/libblas.a is not portable!^M
libtool: link: g++ -shared -nostdlib /usr/lib/gcc/x86_64-amazon-linux/4.4.4/../../../../lib64/crti.o /usr/lib/gcc/x86_64-amazon-linux/4.4.4/crtbeginS.o -Wl,--whole-archive ../itpp/base/.libs/libbase.a ../itpp/stat/.libs/libstat.a ../itpp/comm/.libs/libcomm.a ../itpp/fixed/.libs/libfixed.a ../itpp/optim/.libs/liboptim.a ../itpp/protocol/.libs/libprotocol.a ../itpp/signal/.libs/libsignal.a ../itpp/srccode/.libs/libsrccode.a -Wl,--no-whole-archive -L/usr/lib64/ /usr/lib64/liblapack.a /usr/lib64/libblas.a -lgfortranbegin -lgfortran -L/usr/lib/gcc/x86_64-amazon-linux/4.4.4 -L/usr/lib/gcc/x86_64-amazon-linux/4.4.4/../../../../lib64 -L/lib/../lib64 -L/usr/lib/../lib64 -L/usr/lib/gcc/x86_64-amazon-linux/4.4.4/../../.. -lstdc++ -lm -lc -lgcc_s /usr/lib/gcc/x86_64-amazon-linux/4.4.4/crtendS.o /usr/lib/gcc/x86_64-amazon-linux/4.4.4/../../../../lib64/crtn.o -Wl,-soname -Wl,libitpp.so.7 -o .libs/libitpp.so.7.0.0^M
/usr/bin/ld: /usr/lib64/liblapack.a(dgees.o): relocation R_X86_64_32 against `.rodata' can not be used when making a shared object; recompile with -fPIC^M
/usr/lib64/liblapack.a: could not read symbols: Bad value^M
collect2: ld returned 1 exit status^M
make[2]: *** [libitpp.la] Error 1^M

Solution: it seems that lapack was statically compiled without the -fPIC option and thus itpp refuses to link against it. Follow step 2a to install lapack manaually with the -fPIC option.

Problem:

make[1]: *** Waiting for unfinished jobs....
[ 83%] Building CXX object src/graphlab/CMakeFiles/
graphlab_pic.dir/distributed2/distributed_scheduler_list.o /usr/local/lib/libitpp.so: undefined reference to `zgesv_' /usr/local/lib/libitpp.so: undefined reference to `dorgqr_' /usr/local/lib/libitpp.so: undefined reference to `dswap_' /usr/local/lib/libitpp.so: undefined reference to `dgeqp3_' /usr/local/lib/libitpp.so: undefined reference to `dpotrf_' /usr/local/lib/libitpp.so: undefined reference to `dgemm_' /usr/local/lib/libitpp.so: undefined reference to `zungqr_' /usr/local/lib/libitpp.so: undefined reference to `zscal_' /usr/local/lib/libitpp.so: undefined reference to `dscal_' /usr/local/lib/libitpp.so: undefined reference to `dgesv_' /usr/local/lib/libitpp.so: undefined reference to `dgetri_' /usr/local/lib/libitpp.so: undefined reference to `zgemm_' /usr/local/lib/libitpp.so: undefined reference to `zposv_' /usr/local/lib/libitpp.so: undefined reference to `zgetri_' /usr/local/lib/libitpp.so: undefined reference to `dgeev_' /usr/local/lib/libitpp.so: undefined reference to `zgemv_' /usr/local/lib/libitpp.so: undefined reference to `zgeqrf_' /usr/local/lib/libitpp.so: undefined reference to `zgerc_' /usr/local/lib/libitpp.so: undefined reference to `zswap_' /usr/local/lib/libitpp.so: undefined reference to `zgeev_' /usr/local/lib/libitpp.so: undefined reference to `daxpy_' /usr/local/lib/libitpp.so: undefined reference to `dgetrf_' /usr/local/lib/libitpp.so: undefined reference to `zgels_' /usr/local/lib/libitpp.so: undefined reference to `zgetrf_' /usr/local/lib/libitpp.so: undefined reference to `dgees_' /usr/local/lib/libitpp.so: undefined reference to `dcopy_' /usr/local/lib/libitpp.so: undefined reference to `dger_' /usr/local/lib/libitpp.so: undefined reference to `dgels_' /usr/local/lib/libitpp.so: undefined reference to `dgeqrf_' /usr/local/lib/libitpp.so: undefined reference to `zpotrf_' /usr/local/lib/libitpp.so: undefined reference to `zgees_' /usr/local/lib/libitpp.so: undefined reference to `dgesvd_' /usr/local/lib/libitpp.so: undefined reference to `zgeru_' /usr/local/lib/libitpp.so: undefined reference to `dsyev_' /usr/local/lib/libitpp.so: undefined reference to `zaxpy_' /usr/local/lib/libitpp.so: undefined reference to `ddot_' /usr/local/lib/libitpp.so: undefined reference to `zgesvd_' /usr/local/lib/libitpp.so: undefined reference to `zgeqp3_' /usr/local/lib/libitpp.so: undefined reference to `zcopy_' /usr/local/lib/libitpp.so: undefined reference to `dgemv_' /usr/local/lib/libitpp.so: undefined reference to `dposv_' /usr/local/lib/libitpp.so: undefined reference to `zheev_' collect2: ld returned 1 exit status make[2]: *** [tests/anytests] Error 1 make[1]: *** [tests/CMakeFiles/anytests.dir/all] Error 2

Solution: itpp was compiled using dynamic libraries, but your application did not include the -lblas and -llapack link flags.

Problem:

*** Error: You must have "autoconf" installed to compile IT++ SVN sources
*** Error: You must have "automake" installed to compile IT++ SVN sources
*** Error: You must have "libtoolize" installed to compile IT++ SVN sources

Solution:
Need to install the packages autoconf, automake and libtoolize. See yum/apt-get documentation.

Problem:

/usr/bin/ld: /home/bickson/lapack-3.3.1/lapack_LINUX.a(dgees.o): relocation R_X86_64_32 against `.rodata' can not be used when making a shared object; recompile with -fPIC
/home/bickson/lapack-3.3.1/lapack_LINUX.a: could not read symbols: Bad value
collect2: ld returned 1 exit status

Solution:
It seem you forgot to follow section 2b.

TIP: It is useful to enable also itpp_debug library which is very useful when debugging your code. This is done by adding the flag --enable-debug to the configure script.

Problem:

*** Error in ../../../itpp/base/algebra/ls_solve.cpp on line 271:
LAPACK library is needed to use ls_solve() function

Solution:
It seems that itpp is not installed properly -it did not link to lapack.

Worked solution for Kivy + Admob on android

2013-12-15T22:01:00.004+06:00

This solution: with the few steps:

1. Edit src/org/renpy/android/PythonActivity.java (Paste your ad_unit_id and TEST_DEVICE_ID)
2. Edit AndroidManifest.xml (your comment manifest autogenerator on build.py)
3. Edit YourApp on main.py
4. Start for generate your app.

1. Edit source file on python-for-android/dist/defaults (git version of is ca369d774e276fe2e9444c6021ec2559d0527c1d):

src/org/renpy/android/PythonActivity.java

Replace with:

package org.renpy.android;

import android.R;
import android.app.Activity;
import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.os.Bundle;
import android.os.Environment;
import android.view.KeyEvent;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Toast;
import android.util.Log;
import android.content.pm.PackageManager;
import android.content.pm.ApplicationInfo;

import java.io.InputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.File;
import java.io.IOException;
import java.util.Collections;
import java.util.Iterator;

// Billing
import org.renpy.android.Configuration;
import org.renpy.android.billing.BillingService.RequestPurchase;
import org.renpy.android.billing.BillingService.RestoreTransactions;
import org.renpy.android.billing.Consts.PurchaseState;
import org.renpy.android.billing.Consts.ResponseCode;
import org.renpy.android.billing.PurchaseObserver;
import org.renpy.android.billing.BillingService;
import org.renpy.android.billing.PurchaseDatabase;
import org.renpy.android.billing.Consts;
import org.renpy.android.billing.ResponseHandler;
import org.renpy.android.billing.Security;
import android.os.Handler;
import android.database.Cursor;
import java.util.List;
import java.util.ArrayList;
import android.content.SharedPreferences;
import android.content.Context;

import com.google.ads.AdView;
import com.google.ads.AdSize;
import com.google.ads.AdRequest;
import android.widget.RelativeLayout;

public class PythonActivity extends Activity implements Runnable {
    private static String TAG = "Python";

    private AdView adView;

    // The audio thread for streaming audio...
    private static AudioThread mAudioThread = null;

    // The SDLSurfaceView we contain.
    public static SDLSurfaceView mView = null;
    public static PythonActivity mActivity = null;
    public static ApplicationInfo mInfo = null;

    // Did we launch our thread?
    private boolean mLaunchedThread = false;

    private ResourceManager resourceManager;

    // The path to the directory contaning our external storage.
    private File externalStorage;

    // The path to the directory containing the game.
    private File mPath = null;

    boolean _isPaused = false;

    private static final String DB_INITIALIZED = "db_initialized";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        Hardware.context = this;
        Action.context = this;
        this.mActivity = this;

        getWindowManager().getDefaultDisplay().getMetrics(Hardware.metrics);

        resourceManager = new ResourceManager(this);
        externalStorage = new File(Environment.getExternalStorageDirectory(), getPackageName());

        // Figure out the directory where the game is. If the game was
        // given to us via an intent, then we use the scheme-specific
        // part of that intent to determine the file to launch. We
        // also use the android.txt file to determine the orientation.
        //
        // Otherwise, we use the public data, if we have it, or the
        // private data if we do not.
        if (getIntent() != null && getIntent().getAction() != null &&
                getIntent().getAction().equals("org.renpy.LAUNCH")) {
            mPath = new File(getIntent().getData().getSchemeSpecificPart());

            Project p = Project.scanDirectory(mPath);

            if (p != null) {
                if (p.landscape) {
                    setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
                } else {
                    setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
                }
            }

            // Let old apps know they started.
            try {
                FileWriter f = new FileWriter(new File(mPath, ".launch"));
                f.write("started");
                f.close();
            } catch (IOException e) {
                // pass
            }



        } else if (resourceManager.getString("public_version") != null) {
            mPath = externalStorage;
        } else {
            mPath = getFilesDir();
        }

        requestWindowFeature(Window.FEATURE_NO_TITLE);

        // go to fullscreen mode if requested
        try {
            this.mInfo = this.getPackageManager().getApplicationInfo(
                    this.getPackageName(), PackageManager.GET_META_DATA);
            Log.v("python", "metadata fullscreen is" + this.mInfo.metaData.get("fullscreen"));
            if ( (Integer)this.mInfo.metaData.get("fullscreen") == 1 ) {
                getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                        WindowManager.LayoutParams.FLAG_FULLSCREEN);
            }
        } catch (PackageManager.NameNotFoundException e) {
        }

        if ( Configuration.use_billing ) {
            mBillingHandler = new Handler();
        }

        // Start showing an SDLSurfaceView.
        mView = new SDLSurfaceView(
                this,
                mPath.getAbsolutePath());

        Hardware.view = mView;

        RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams(
                RelativeLayout.LayoutParams.WRAP_CONTENT,
                RelativeLayout.LayoutParams.WRAP_CONTENT);
        lp.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
        lp.addRule(RelativeLayout.CENTER_IN_PARENT);

        adView = new AdView(this, AdSize.BANNER, "YOU_AD_UNIT_ID");

        adView.setLayoutParams(lp);

        RelativeLayout layout = new RelativeLayout(this);

        layout.addView(mView);
        layout.addView(adView);

        AdRequest adRequest = new AdRequest();

        adRequest.addTestDevice("TEST_DEVICE_ID"); // Replace with your test device id

        adView.loadAd(adRequest);

        setContentView(layout);

        // Force the background window color if asked
        if ( this.mInfo.metaData.containsKey("android.background_color") ) {
            getWindow().getDecorView().setBackgroundColor(
                this.mInfo.metaData.getInt("android.background_color"));
        }
    }

    /**
     * Show an error using a toast. (Only makes sense from non-UI
     * threads.)
     */
    public void toastError(final String msg) {

        final Activity thisActivity = this;

        runOnUiThread(new Runnable () {
            public void run() {
                Toast.makeText(thisActivity, msg, Toast.LENGTH_LONG).show();
            }
        });

        // Wait to show the error.
        synchronized (this) {
            try {
                this.wait(1000);
            } catch (InterruptedException e) {
            }
        }
    }

    public void recursiveDelete(File f) {
        if (f.isDirectory()) {
            for (File r : f.listFiles()) {
                recursiveDelete(r);
            }
        }
        f.delete();
    }


    /**
     * This determines if unpacking one the zip files included in
     * the .apk is necessary. If it is, the zip file is unpacked.
     */
    public void unpackData(final String resource, File target) {

        // The version of data in memory and on disk.
        String data_version = resourceManager.getString(resource + "_version");
        String disk_version = null;

        // If no version, no unpacking is necessary.
        if (data_version == null) {
            return;
        }

        // Check the current disk version, if any.
        String filesDir = target.getAbsolutePath();
        String disk_version_fn = filesDir + "/" + resource + ".version";

        try {
            byte buf[] = new byte[64];
            InputStream is = new FileInputStream(disk_version_fn);
            int len = is.read(buf);
            disk_version = new String(buf, 0, len);
            is.close();
        } catch (Exception e) {
            disk_version = "";
        }

        // If the disk data is out of date, extract it and write the
        // version file.
        if (! data_version.equals(disk_version)) {
            Log.v(TAG, "Extracting " + resource + " assets.");

            recursiveDelete(target);
            target.mkdirs();

            AssetExtract ae = new AssetExtract(this);
            if (!ae.extractTar(resource + ".mp3", target.getAbsolutePath())) {
                toastError("Could not extract " + resource + " data.");
            }

            try {
                // Write .nomedia.
                new File(target, ".nomedia").createNewFile();

                // Write version file.
                FileOutputStream os = new FileOutputStream(disk_version_fn);
                os.write(data_version.getBytes());
                os.close();
            } catch (Exception e) {
                Log.w("python", e);
            }
        }

    }

    public void run() {

        unpackData("private", getFilesDir());
        unpackData("public", externalStorage);

        System.loadLibrary("sdl");
        System.loadLibrary("sdl_image");
        System.loadLibrary("sdl_ttf");
        System.loadLibrary("sdl_mixer");
        System.loadLibrary("python2.7");
        System.loadLibrary("application");
        System.loadLibrary("sdl_main");

        System.load(getFilesDir() + "/lib/python2.7/lib-dynload/_io.so");
        System.load(getFilesDir() + "/lib/python2.7/lib-dynload/unicodedata.so");

        try {
            System.loadLibrary("sqlite3");
            System.load(getFilesDir() + "/lib/python2.7/lib-dynload/_sqlite3.so");
        } catch(UnsatisfiedLinkError e) {
        }

        try {
            System.load(getFilesDir() + "/lib/python2.7/lib-dynload/_imaging.so");
            System.load(getFilesDir() + "/lib/python2.7/lib-dynload/_imagingft.so");
            System.load(getFilesDir() + "/lib/python2.7/lib-dynload/_imagingmath.so");
        } catch(UnsatisfiedLinkError e) {
        }

        if ( mAudioThread == null ) {
            Log.i("python", "Starting audio thread");
            mAudioThread = new AudioThread(this);
        }

        runOnUiThread(new Runnable () {
            public void run() {
                mView.start();
            }
        });
    }

    @Override
    protected void onPause() {
        _isPaused = true;
        super.onPause();

        if (mView != null) {
            mView.onPause();
        }
    }

    @Override
    protected void onResume() {
        super.onResume();
        _isPaused = false;

        if (!mLaunchedThread) {
            mLaunchedThread = true;
            new Thread(this).start();
        }

        if (mView != null) {
            mView.onResume();
        }
    }

    public boolean isPaused() {
        return _isPaused;
    }

    @Override
    public boolean onKeyDown(int keyCode, final KeyEvent event) {
        //Log.i("python", "key2 " + mView + " " + mView.mStarted);
        if (mView != null && mView.mStarted && SDLSurfaceView.nativeKey(keyCode, 1, event.getUnicodeChar())) {
            return true;
        } else {
            return super.onKeyDown(keyCode, event);
        }
    }

    @Override
    public boolean onKeyUp(int keyCode, final KeyEvent event) {
        //Log.i("python", "key up " + mView + " " + mView.mStarted);
        if (mView != null && mView.mStarted && SDLSurfaceView.nativeKey(keyCode, 0, event.getUnicodeChar())) {
            return true;
        } else {
            return super.onKeyUp(keyCode, event);
        }
    }

    protected void onDestroy() {
        mPurchaseDatabase.close();
        mBillingService.unbind();

        if (adView != null) {
            adView.destroy();
        }

        if (mView != null) {
            mView.onDestroy();
        }
        //Log.i(TAG, "on destroy (exit1)");
        System.exit(0);
    }

    public static void start_service(String serviceTitle, String serviceDescription,
            String pythonServiceArgument) {
        Intent serviceIntent = new Intent(PythonActivity.mActivity, PythonService.class);
        String argument = PythonActivity.mActivity.getFilesDir().getAbsolutePath();
        String filesDirectory = PythonActivity.mActivity.mPath.getAbsolutePath();
        serviceIntent.putExtra("androidPrivate", argument);
        serviceIntent.putExtra("androidArgument", filesDirectory);
        serviceIntent.putExtra("pythonHome", argument);
        serviceIntent.putExtra("pythonPath", argument + ":" + filesDirectory + "/lib");
        serviceIntent.putExtra("serviceTitle", serviceTitle);
        serviceIntent.putExtra("serviceDescription", serviceDescription);
        serviceIntent.putExtra("pythonServiceArgument", pythonServiceArgument);
        PythonActivity.mActivity.startService(serviceIntent);
    }

    public static void stop_service() {
        Intent serviceIntent = new Intent(PythonActivity.mActivity, PythonService.class);
        PythonActivity.mActivity.stopService(serviceIntent);
    }

    //----------------------------------------------------------------------------
    // Listener interface for onNewIntent
    //

    public interface NewIntentListener {
        void onNewIntent(Intent intent);
    }

    private List newIntentListeners = null;

    public void registerNewIntentListener(NewIntentListener listener) {
        if ( this.newIntentListeners == null )
            this.newIntentListeners = Collections.synchronizedList(new ArrayList());
        this.newIntentListeners.add(listener);
    }

    public void unregisterNewIntentListener(NewIntentListener listener) {
        if ( this.newIntentListeners == null )
            return;
        this.newIntentListeners.remove(listener);
    }

    @Override
    protected void onNewIntent(Intent intent) {
        if ( this.newIntentListeners == null )
            return;
        if ( this.mView != null )
            this.mView.onResume();
        synchronized ( this.newIntentListeners ) {
            Iterator iterator = this.newIntentListeners.iterator();
            while ( iterator.hasNext() ) {
                (iterator.next()).onNewIntent(intent);
            }
        }
    }

    //----------------------------------------------------------------------------
    // Listener interface for onActivityResult
    //

    public interface ActivityResultListener {
        void onActivityResult(int requestCode, int resultCode, Intent data);
    }

    private List activityResultListeners = null;

    public void registerActivityResultListener(ActivityResultListener listener) {
        if ( this.activityResultListeners == null )
            this.activityResultListeners = Collections.synchronizedList(new ArrayList());
        this.activityResultListeners.add(listener);
    }

    public void unregisterActivityResultListener(ActivityResultListener listener) {
        if ( this.activityResultListeners == null )
            return;
        this.activityResultListeners.remove(listener);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
        if ( this.activityResultListeners == null )
            return;
        if ( this.mView != null )
            this.mView.onResume();
        synchronized ( this.activityResultListeners ) {
            Iterator iterator = this.activityResultListeners.iterator();
            while ( iterator.hasNext() )
                (iterator.next()).onActivityResult(requestCode, resultCode, intent);
        }
    }

    //----------------------------------------------------------------------------
    // Billing
    //
    class PythonPurchaseObserver extends PurchaseObserver {
        public PythonPurchaseObserver(Handler handler) {
            super(PythonActivity.this, handler);
        }

        @Override
        public void onBillingSupported(boolean supported, String type) {
            if (Consts.DEBUG) {
                Log.i(TAG, "supported: " + supported);
            }

            String sup = "1";
            if ( !supported )
                sup = "0";
            if (type == null)
                type = Consts.ITEM_TYPE_INAPP;

            // add notification for python message queue
            mActivity.mBillingQueue.add("billingSupported|" + type + "|" + sup);

            // for managed items, restore the database
            if ( type == Consts.ITEM_TYPE_INAPP && supported ) {
                restoreDatabase();
            }
        }

        @Override
        public void onPurchaseStateChange(PurchaseState purchaseState, String itemId,
                int quantity, long purchaseTime, String developerPayload) {
            mActivity.mBillingQueue.add(
                "purchaseStateChange|" + itemId + "|" + purchaseState.toString());
        }

        @Override
        public void onRequestPurchaseResponse(RequestPurchase request,
                ResponseCode responseCode) {
            mActivity.mBillingQueue.add(
                "requestPurchaseResponse|" + request.mProductId + "|" + responseCode.toString());
        }

        @Override
        public void onRestoreTransactionsResponse(RestoreTransactions request,
                ResponseCode responseCode) {
            if (responseCode == ResponseCode.RESULT_OK) {
                mActivity.mBillingQueue.add("restoreTransaction|ok");
                if (Consts.DEBUG) {
                    Log.d(TAG, "completed RestoreTransactions request");
                }
                // Update the shared preferences so that we don't perform
                // a RestoreTransactions again.
                SharedPreferences prefs = getPreferences(Context.MODE_PRIVATE);
                SharedPreferences.Editor edit = prefs.edit();
                edit.putBoolean(DB_INITIALIZED, true);
                edit.commit();
            } else {
                if (Consts.DEBUG) {
                    Log.d(TAG, "RestoreTransactions error: " + responseCode);
                }

                mActivity.mBillingQueue.add(
                    "restoreTransaction|error|" + responseCode.toString());
            }
        }
    }

    /**
     * If the database has not been initialized, we send a
     * RESTORE_TRANSACTIONS request to Android Market to get the list of purchased items
     * for this user. This happens if the application has just been installed
     * or the user wiped data. We do not want to do this on every startup, rather, we want to do
     * only when the database needs to be initialized.
     */
    private void restoreDatabase() {
        SharedPreferences prefs = getPreferences(MODE_PRIVATE);
        boolean initialized = prefs.getBoolean(DB_INITIALIZED, false);
        if (!initialized) {
            mBillingService.restoreTransactions();
        }
    }

    /** An array of product list entries for the products that can be purchased. */

    private enum Managed { MANAGED, UNMANAGED, SUBSCRIPTION }


    private PythonPurchaseObserver mPythonPurchaseObserver;
    private Handler mBillingHandler;
    private BillingService mBillingService;
    private PurchaseDatabase mPurchaseDatabase;
    private String mPayloadContents;
    public List mBillingQueue;

    public void billingServiceStart_() {
        mBillingQueue = new ArrayList();

        // Start the billing part
        mPythonPurchaseObserver = new PythonPurchaseObserver(mBillingHandler);
        mBillingService = new BillingService();
        mBillingService.setContext(this);
        mPurchaseDatabase = new PurchaseDatabase(this);

        ResponseHandler.register(mPythonPurchaseObserver);
        if (!mBillingService.checkBillingSupported()) {
            //showDialog(DIALOG_CANNOT_CONNECT_ID);
            Log.w(TAG, "NO BILLING SUPPORTED");
        }
        if (!mBillingService.checkBillingSupported(Consts.ITEM_TYPE_SUBSCRIPTION)) {
            //showDialog(DIALOG_SUBSCRIPTIONS_NOT_SUPPORTED_ID);
            Log.w(TAG, "NO SUBSCRIPTION SUPPORTED");
        }
    }

    public void billingServiceStop_() {
    }

    public void billingBuy_(String mSku) {
        Managed mManagedType = Managed.MANAGED;
        if (Consts.DEBUG) {
            Log.d(TAG, "buying sku: " + mSku);
        }

        if (mManagedType == Managed.MANAGED) {
            if (!mBillingService.requestPurchase(mSku, Consts.ITEM_TYPE_INAPP, mPayloadContents)) {
                Log.w(TAG, "ERROR IN BILLING REQUEST PURCHASE");
            }
        } else if (mManagedType == Managed.SUBSCRIPTION) {
            if (!mBillingService.requestPurchase(mSku, Consts.ITEM_TYPE_INAPP, mPayloadContents)) {
                Log.w(TAG, "ERROR IN BILLING REQUEST PURCHASE");
            }
        }
    }

    public String billingGetPurchasedItems_() {
        String ownedItems = "";
        Cursor cursor = mPurchaseDatabase.queryAllPurchasedItems();
        if (cursor == null)
            return "";

        try {
            int productIdCol = cursor.getColumnIndexOrThrow(
                    PurchaseDatabase.PURCHASED_PRODUCT_ID_COL);
            int qtCol = cursor.getColumnIndexOrThrow(
                    PurchaseDatabase.PURCHASED_QUANTITY_COL);
            while (cursor.moveToNext()) {
                String productId = cursor.getString(productIdCol);
                String qt = cursor.getString(qtCol);

                productId = Security.unobfuscate(this, Configuration.billing_salt, productId);
                if ( productId == null )
                    continue;

                if ( ownedItems != "" )
                    ownedItems += "\n";
                ownedItems += productId + "," + qt;
            }
        } finally {
            cursor.close();
        }

        return ownedItems;
    }


    static void billingServiceStart() {
        mActivity.billingServiceStart_();
    }

    static void billingServiceStop() {
        mActivity.billingServiceStop_();
    }

    static void billingBuy(String sku) {
        mActivity.billingBuy_(sku);
    }

    static String billingGetPurchasedItems() {
        return mActivity.billingGetPurchasedItems_();
    }

    static String billingGetPendingMessage() {
        if (mActivity.mBillingQueue.isEmpty())
            return null;
        return mActivity.mBillingQueue.remove(0);
    }

}

2. Your AndroidManifest.xml: (on AdActivity add android:process=":python")

https://docs.google.com/document/d/1Cr7ixoGoIxa5RDBllDotZcwzlGiH7ko5c8IahJdoL_A/edit?usp=sharing

3. class YourApp(App):
def on_pause(self):
return True

4. Generate your app for android

It bad solution, but is work.Any ideas?

kivy: How to i get google admob android source code?

2013-12-05T01:26:00.001+06:00

I want to create (or migrate) google admob for android to kivy project,
Please, leave url to source code of admob or admob source code file here.
It need, because i not understand mechanizm of admob for android (admob url api)

Answer:
Admob is not open-source, so I don't think you will be able to get this source code.

Про то, как прикрутить купленный ssl

2013-05-02T03:05:00.000+06:00

Расскажу, как прикрутить ssl + nginx + django с примерами.

Поэтапно - самого начала.

Покупаем дешёвый (просто для безопасности сайта - можно купить за 600 руб )

или подороже - для организации (тогда появится зелёненькая штука)

После покупки вам сразу в интерфейсе хостинга выдают private key

После небольшого ожидания - вам вышлют public ключ на почту.

Далее, настройки на сервере nginx

server {

    listen 443;

    ssl on;
    ssl_certificate /etc/ssl/SSL.crt;
    ssl_certificate_key /etc/ssl/visa.key;

    server_name visagency.ru;

    location / {

        uwsgi_pass 127.0.0.1:49001;

        charset utf8;
        access_log /var/log/nginx/visa.log;

    }
}

где /etc/ssl/SSL.crt - public key - собранный из двух сертификатов (почитайте на сайте поддержки сертификатов),
/etc/ssl/visa.conf - private key

релоадим nginx - должно работать норм.

sudo service nginx reload

Вот ещё конфиг на redirect на https:

server {
    listen 80;

    server_name visagency.ru;

    location / {
        rewrite ^ https://visagency.ru$request_uri? permanent;
    }
}

django request meta HTTP_COOKIE get expires - get max_age

2012-12-11T18:45:00.002+06:00

Оказывается из браузера нельзя на сервере достать expires и max_age у cookie,

поэтому нельзя сказать в django так

import Cookie

cookie = Cookie.SimpleCookie(request.META['HTTP_COOKIE']);

cobj = cookie['some_cookie_name']['expires'] # Empty ""

и получить значение

Прийдется самостоятельно кастомизировать время сервера в другую куку.

Например, так:

cookie['set_cookie_time'] = datetime.date.today().strftime('%F')

Применение классов при получении подробного решения онлайн

2012-10-10T04:41:00.002+06:00

Задался Я целью сделать симплекс метод онлайн с подробным бесплатным решением.

Как известно, обычно, подробное решение должно быть разбито на шаги, чтобы стало ясно.

Чтобы было ясно и у меня в коде и чтобы не запутаться при написании такой сложной программы я ввел класс. Входящими параметрами в этот класс стали:

функция, для которой необходимо найти экстремум
этот экстремум является максимумом или минимумом
и система условий в симплекс-задаче в ввиде списка данных (python-словарей)

В __init__ (в конструкторе) инитятся какие-то глобальные вещи, например, свободные члены, искусственные переменные, преобразуются данные к удобным.

Далее, для каждого шага проверяется:

нужно ли выполнять соотв. шаг (в отдельном методе объекта данного класса).
В другом методе для данного шага выполняется преобразование входящих данных
записывается состояние (слепок) данных на каком-то шаге в свойство объекта класса. (Например, запоминаются данные после приведения системы условий к каноническому виду, как требует симплекс-метод)
Также в каком-то из методов для данного шага (на проверке или же преобразовании данных) - заполняются глобальные вещи, например, свободные переменные

У нас всегда есть проходящие данные через все методы и куча слепков этих данных.

Далее полученный объект данного класса пихается в django-шаблон, где происходит вывод решения задачи симплекс методом простыми манипуляциями if и for.

Пример того, что получилось вы можете посмотреть по ссылке симлекс метод онлайн
(там есть текстовый пример, чтобы не скучали и видео пример)

sudo usermod -G sudo -a USERNAME

2012-06-28T19:00:00.000+06:00

sudo usermod -G sudo -a USERNAME

yota@telerossa.ru

2012-06-26T00:37:00.000+06:00

Это мошенники. Просят выслать паспортные данные. Не высылайте!

Я позвонил в yota - сказали, что - да, действительно мошенники.

Определение направление радиус-вектора от одной точки к другой точки

2012-05-13T05:14:00.000+06:00

Допустим, у нас есть две точки, например, центр города и отель.

Нам нужно определить, в каком направлении нужно двигаться, чтобы при движении из центра города попасть в отель. Координаты центра города и отеля нам известны.
Для решения задачи:

Ставим точку центра города на бумажке.
Строим через эту точку вертикальную и горизонтальную линии (оси x и y координат)
Строим конечную точку (отель)
Определяем в какой зоне координат находится конечная точка (в --, ++, -+, +-)
Далее определяем угол между осью x и y
Смотрим чему равен угол, < 45 - 45/2, > 45 + 45/2 или находится между

Тем самым мы поймем в какой зоне находится наша точка - по северному, западному, южному, восточному направлению или северно-западному, северо-восточному, юго-западному, юго-восточному ли находится отель.

Код на языке python:

import math


def get_direction_name((lng_city, lat_city), (lng_hotel, lat_hotel)):
    direction = get_direction((lng_city, lat_city), (lng_hotel, lat_hotel))
    name = dict(DIRECTIONS)[direction]
    return name


def get_direction((lng_city, lat_city), (lng_hotel, lat_hotel)):

    diff_lat = lat_hotel - lat_city
    diff_lng = lng_hotel - lng_city

    if math.fabs(diff_lng) > 180:
        diff_lng -= 360*diff_lng/math.fabs(diff_lng)


    is_mm = (diff_lat < 0) and (diff_lng < 0) and 1 or 0
    is_pp = (diff_lat > 0) and (diff_lng > 0) and 1 or 0
    is_mp = (diff_lat > 0) and (diff_lng < 0) and 1 or 0
    is_pm = (diff_lat < 0) and (diff_lng > 0) and 1 or 0

    if diff_lng:
        arg = math.fabs(diff_lat/diff_lng)
        degree = math.atan(arg)*180/math.pi
    else:
        degree = 90

    on_diagonal = 45 - 45.0/2 < degree < 45 + 45.0/2 and 1 or 0
    below_diagonal = degree < 45 - 45.0/2 and 1 or 0
    above_diagonal = degree > 45 + 45.0/2 and 1 or 0

    print is_pp, is_mm, is_pm, is_mp, on_diagonal, below_diagonal, above_diagonal

    direction_key = '{0}-{1}-{2}-{3}-{4}-{5}-{6}'.format(
        is_pp, is_mm, is_pm, is_mp, on_diagonal, below_diagonal, above_diagonal,
    )
    direction = _direction_map[direction_key]
    return direction

NORTH_EAST = 'north-east'
NORTH_WEST = 'north-west'
SOUTH_EAST = 'south-east'
SOUTH_WEST = 'south-west'
NORTH = 'north'
SOUTH = 'south'
EAST = 'east'
WEST = 'west'

DIRECTIONS = [
   (NORTH_EAST, _(u'северо-восток')),
   (NORTH_WEST, _(u'северо-запад')),
   (SOUTH_EAST, _(u'юго-восток')),
   (SOUTH_WEST, _(u'юго-запад')),
   (NORTH, _(u'север')),
   (SOUTH, _(u'юг')),
   (EAST, _(u'восток')),
   (WEST, _(u'запад')),
]

# Key: is_pp-is_mm-is_pm-is_mp-on_diagonal-below_diagonal-above_diagonal
_direction_map = {
    '1-0-0-0-1-0-0': NORTH_EAST,
    '1-0-0-0-0-1-0': EAST,
    '1-0-0-0-0-0-1': NORTH,
    '0-1-0-0-1-0-0': SOUTH_WEST,
    '0-1-0-0-0-1-0': WEST,
    '0-1-0-0-0-0-1': SOUTH,
    '0-0-1-0-1-0-0': SOUTH_EAST,
    '0-0-1-0-0-1-0': EAST,
    '0-0-1-0-0-0-1': SOUTH,
    '0-0-0-1-1-0-0': NORTH_WEST,
    '0-0-0-1-0-1-0': WEST,
    '0-0-0-1-0-0-1': NORTH,
}

get search bot in django

2012-02-18T16:46:00.000+06:00

See this python code

def _is_searchbot(request):
    user_agent = request.META.get('HTTP_USER_AGENT', None)
    if not user_agent:
        return False
    parts = re.findall(r'([\w\-\s\.]*(yandex|google)[\w\-\s\.]*)', user_agent)
    if not parts:
        return False
    part = parts[0]
    if part not in _SEARCH_BOTS:
        return False
    return True

_SEARCH_BOTS = [
    ('yandex.com', 'yandex'),
    ('www.yandex.com', 'yandex'),
    ('yandex.ru', 'yandex'),
    ('www.yandex.ru', 'yandex'),
    ('www.google.com', 'google'),
    ('google.com', 'google'),
    ('www.google.ru', 'google'),
    ('google.ru', 'google'),
]

Два способа формирования контекста для subprocessing.Pool.map

2011-12-30T04:42:00.002+06:00

1. С использованием инициализатора и глобального окружения

from multiprocessing import Pool

def init_context(context):
   globals().update(context)

def f(x):
   return x*multiplier

if __name__ == '__main__':
   pool = Pool(4, init_context, [{'multiplier': 2},])
   data = xrange(10)
   print pool.map(f, data)

2. С использованием callable классов

from multiprocessing import Pool

class f(object):
   def __init__(self, multiplier):
       self.multiplier = multiplier
   def __call__(self, x):
       return x*self.multiplier

if __name__ == '__main__':
   pool = Pool(4)
   data = xrange(10)
   print pool.map(f(3), data)

Легкий для использования объектно-ориентированный thread pool framework

2011-12-25T05:16:00.002+06:00

thread pool framework: под названием:

threadpool

django import excel

2011-12-10T04:44:00.001+06:00

This publication is present of django system for import data from excel:

Use this step by step for rapid start use wih django application:

1. Follow to page https://github.com/satels/django-import-excel and push the button Watch
2.Download this project https://github.com/satels/django-import-excel/zipball/master
3. Unpack, following to the folder and run pip install -e . or python setup.py install
4. In settings.py:

INSTALLED_APPS = [
     ...
     'import_excel',
     ...
]

5. So, for example, you need import the data from excel for model

class Book(models.Model):

    name = models.CharField(max_length=255)
    author = models.CharField(max_length=255)

The excel file contains the data

name | author
Tom Sawyer | Mark Twain
The Sands of Mars | Arthur C. Clarke

To do is, create this form:

from django.db import transaction
from import_excel.forms import ImportExcelForm

class BookImportForm(ImportExcelForm):

    @transaction.autocommit
    def update_callback(self, request, converted_items):
         for book_item in converted_items[:1]:
              name = book_item[0]
              author = book_item[1]
              Book.objects.create(name=name, author=author)

Далее, в urls.py:

urlpatterns = patterns('',
      url(r'^/books/import-from-excel/$', permission_required('books.add_book')(import_excel), {
             'FormClass': BookImportForm, 'next_url': '/books/', 'with_good': True, 'template_name': 'import_excel/import_excel.html',
      }, name='book-import-excel'),
),

We see this in import book form , next_url - the url of page for redirect after succefull import request, with_good - it means, what must pre moderate data from excel file, also you must set template_name, if you have custom template (copy file from import_excel/templates/import_excel/import_excel.html)

P.S. permission_required for django admin zone

django импорт excel

2011-12-10T02:45:00.001+06:00

Появилась очень удобная система для импорта данных из excel в django:

Чтобы начать использовать это приложение django в своем проекте:

1. Переходим на страницу https://github.com/satels/django-import-excel и нажимаем кнопку Watch
2.Скачиваем проект себе https://github.com/satels/django-import-excel/zipball/master
3. Распаковываем, переходим в папку и запускаем pip install -e . или же python setup.py install
4. В settings.py:

INSTALLED_APPS = [
     ...
     'import_excel',
     ...
]

5. Итак, например, нам надо импортировать данные из excel для модели

class Book(models.Model):

    name = models.CharField(max_length=255)
    author = models.CharField(max_length=255)

Файл excel же содержит данные

name | author
Мастер и Маргарита | Михаил Булгаков
И дольше века длится день | Чингиз Айтматов

Для этого создаем форму

from django.db import transaction
from import_excel.forms import ImportExcelForm

class BookImportForm(ImportExcelForm):

    @transaction.autocommit
    def update_callback(self, request, converted_data):
         for book_item in converted_data[1:]:
              name = book_item[0]
              author = book_item[1]
              Book.objects.create(name=name, author=author)

Далее, в urls.py:

urlpatterns = patterns('',
      url(r'^/books/import-from-excel/$', permission_required('books.add_book')(import_excel), {
             'FormClass': BookImportForm, 'next_url': '/books/', 'with_good': True, 'template_name': 'import_excel/import_excel.html',
      }, name='book-import-excel'),
),

Видим здесь мы указываем форму для загрузки книг, next_url - страницу для перехода после успешной загрузки, with_good - это значит, что надо подтвердить загружаемые данные с предварительным просмотром, также вы можете указывать template_name, если захотите задать свой (скопируйте файл из import_excel/templates/import_excel/import_excel.html)

Склонятор имен на django

2011-10-25T02:50:00.002+06:00

Склонятор имен на django можно найти по ссылке https://github.com/gugu/django-declension. Использует api яндекс склонятора http://nano.yandex.ru/project/inflect/ Кэширует результат в таблицу базы данных, имеется templatetag.