Python installation and setup - Python Django Build an E-commerce Store

This tutorial will show you how to install Python 3 on your computer. We will also show you how to set up a programming environment for Python, and how to write your first Python program.


Python installation and setup - Python Django Build an E-commerce Store
Python installation and setup
Python is a programming language with many characteristics, such as an intuitive syntax and powerful data structures, which can lead to efficient code. It is free and open source, and has a large, active community. Python is commonly used in scientific computing, data analysis, artificial intelligence, and web development.

This document provides an overview of the Python installation process on Windows. Installation on other platforms is similar.
1. Download and install Python
The first step is to download and install Python. The latest version of Python can be found on the Python website.
There are two versions of Python available on the website: Python 2 and Python 3. The current version of Python is 3, but many existing Python codebases still use Python 2. If you are unsure which version to use, it is recommended to use Python 3.
The Python installation process is straightforward and consists of two steps:
1. Download the Python installer.
2. Run the installer and follow the onscreen instructions.
When the installer is finished, you will have a Python interpreter installed on your computer.
2. Verify your installation
After installing Python, you can verify that it is installed correctly by running the Python interpreter:
1. Open the Start Menu and search for "Python."
2. Select the "Python (3.7.3)" option.
3. The Python interpreter will open.
If the Python interpreter opens, then Python is installed correctly.
3. Set up your environment
Now that you have Python installed, you need to set up your environment so that you can start programming in Python.
There are three steps to setting up your environment:
1. Install a text editor.
2. Add Python to your PATH.
3. Set up a virtual environment.
1. Install a text editor
A text editor is a program that allows you to write code. There are many text editors available, but one of the most popular text editors for Python is Atom.
If you do not have a text editor, you can download Atom from the Atom website.
2. Add Python to your PATH
In order to run Python programs, you need to add Python to your PATH. The PATH is a system variable that contains a list of directories that Windows looks for when you try to run a program.
You can add Python to your PATH by following these steps:
1. Open the Start Menu and search for "Path."
2. Select the "Edit the system environment variables" option.
3. The "System Properties" window will open.
4. Select the "Environment Variables" button.
5. The "Environment Variables" window will open.
6. In the "User variables for [username]" section, select the "Path" variable.
7. The "Path" variable will open.
8. Select the "Edit" button.
9. The "Edit Variable" window will open.
10. In the "Variable value" textbox, add the path to the Python interpreter.
For example, if you installed Python in C:\Python37, then you would add C:\Python37 to the "Variable value" textbox.
11. Click the "OK" button.
12. Click the "OK" button in the "System Properties" window.
13. Close the "Environment Variables" window.
Now Python will be added to your PATH and you will be able to run Python programs from any directory.
3. Set up a virtual environment
A virtual environment is a tool that allows you to isolate your Python programs from other programs on your computer. This is useful when you are working on multiple Python projects because it prevents conflicts between the projects.
You can set up a virtual environment by following these steps:
1. Open the Start Menu and search for "Python."
2. Select the "Python (3.7.3)" option.
3. The Python interpreter will open.
4. In the Python interpreter, type the following command:
import virtualenv
5. If the virtualenv module is not installed, the Python interpreter will install it,
6. After the virtualenv module is installed, type the following command:
virtualenv myenv
7. The "virtualenv myenv" command will create a new virtual environment in the C:\Users
[username]\myenv directory.
8. To activate the virtual environment, type the following command:
activate myenv
9. The "activate myenv" command will change the environment variable to "myenv."
Now your virtual environment is set up and you can start programming in Python.
How to install python.

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