learnpython24

learnpython24-(How to Get Started With Python?)

2020-08-16T02:51:00.008-07:00

PYTHON

INTRODUCTION

How to Get Started With Python?

In this tutorial, you will learn to install and run Python on your computer. Once we do that, we will also write our first Python program.

Python is a cross-platform programming language, which means that it can run on multiple platforms like Windows, macOS, Linux, and has even been ported to the Java and .NET virtual machines. It is free and open-source.

Even though most of today's Linux and Mac have Python pre-installed in it, the version might be out-of-date. So, it is always a good idea to install the most current version.

Downloading Python and Pycharm Installation

In this tutorial, we'll download and install Python as well as an IDE called PyCharm. First of all, let's head to Python's official website and download Python:

Go to this link - https://www.python.org/downloads/.
From the above link, download the latest version of Python.
After visiting this link, click on the "Download Python" button.
Your download will start as soon as you click the button.

Nice! You can run the installer and install Python. Now, Let's download Pycharm. But what is Pycharm, and why do we need it?

Pycharm is one of the best Integrated Development Environments (IDEs) for Python Language developed by the Czech company JetBrains. To download Pycharm, follow the steps below:

Go to this link - https://www.jetbrains.com/pycharm/download/#section=windows.
After visiting the above link, download the community version of Pycharm.
Click on the community button to download it.
Your download will start.

After that, install it like any other software. After Installing both Python and Pycharm, open terminal (Powershell), and then type 'python' and press Enter.

You should see the output like this.

Then Install Pycharm like any other software and do not make any changes while installing it.

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learnpython24-(Using Modules & Pip In Python)

2020-08-16T02:50:00.021-07:00

Using Modules & Pip In Python

Sometimes we have to use someone else's code in our program because it saves us a lot of time. Today, we will learn a technique to use code that is not written by us but will enhance the quality of our program, save us time, and of course, it is legal and free.

Let us understand what utilities like modules and pip are,

Module – Module or library is a file that contains definitions of several functions, classes, variables, etc. which is written by someone else for us to use.

Pip – Pip is a package manager for Python i.e., pip command can be used to download any external module in Python. It is something that helps us to get code written by someone else from somewhere.

We can install a module in our system by using pip command :

Open cmd or Powershell in your system.
And then, type pip install module_name and press enter.
Once you do that, the module will start downloading and will install automatically on your computer.

Example, for installing flask I will do something like this:

After pressing the enter key, you will see something like this:

After installing any module in Python, you can import it into your program or your Python projects. For example, to use flask, I will type "import flask" at the top of my Python program.

import flask

There are two types of modules in Python:

Built-in Modules:

Built-in modules are the modules that are pre-installed in Python i.e.; there is no need to download them before using. These modules come with python interpreter itself.

Example – random, os, etc.

To get a complete list of built-in modules of python head to the following page of the official documentation - https://docs.python.org/3/py-modindex.html.

External Modules:

These are the modules that are not pre-installed in Python i.e., we need to download them before using them in our program.

Example – Flask, Pandas, TensorFlow, etc.

That's all about modules in Python. I hope you are enjoying this course.
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learnpython24.-(first python program)

2020-08-16T02:49:00.008-07:00

FIRST PYTHON PROGRAM

Writing Our First Python Program

Today we will be writing our first program in Python Language. I know you were waiting to do this for long.

Let's get to business and start writing our first python program. Follow the below steps:

Open Pycharm and create a new file in it.
Keep in mind the file name should not match any module name.
After creating a new file, type print("Hello World")
And then run your program.
You will get the output as "Hello World."

So, this is our first python program, and in this program, we just used a print function. In this function, whatever we pass in parenthesis () in a double quote or single quote gets printed (as it is) on the screen.

Make sure you have written and executed the below code to get a feel of what it looks like!

print("Hello world!")

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learnpython24

learnpython24-(How to Get Started With Python?)

PYTHON

INTRODUCTION

How to Get Started With Python?

Downloading Python and Pycharm Installation

Next Tutorial:

learnpython24-(Using Modules & Pip In Python)

Using Modules & Pip In Python

That's all about modules in Python. I hope you are enjoying this course. Previous Tutorial:

Next Tutorial:

learnpython24.-(first python program)

FIRST PYTHON PROGRAM

Writing Our First Python Program

Next Tutorial:

That's all about modules in Python. I hope you are enjoying this course.
Previous Tutorial: