abhishek-2502 / python_virtual_environment

A guide to creating and activating a Python virtual environment.

Python Virtual Environment Setup

This guide provides step-by-step instructions to create and activate a Python virtual environment using virtualenv.

Prerequisites

• Ensure Python 3 is installed on your system. You can download it from the official Python website.
• Ensure pip is installed. pip typically comes with Python, but you can install it separately if needed.

Steps to Create a Virtual Environment

1. Install virtualenv:

   pip install virtualenv

2. Create a Virtual Environment:

   virtualenv -p python3 env

   This command creates a virtual environment named env using Python 3.

3. Activate the Virtual Environment:

   • For Linux/MacOS:

     source env/bin/activate

   • For Windows:

     env\Scripts\activate

Deactivating the Virtual Environment

To deactivate the virtual environment, simply run:

deactivate

Additional Information

• Installing Packages: Once the virtual environment is activated, you can install packages using pip as usual, e.g.,

  pip install package_name

• Freezing Requirements: To freeze the installed packages into a requirements.txt file, use:

  pip freeze > requirements.txt

• Installing from requirements.txt: To install packages from a requirements.txt file, use:

  pip install -r requirements.txt

Author

Abhishek Rajput
Palak Rajput