Python Virtual Environment

Step 1: Install Python

First, ensure you have Python installed. You can check by running:

python3 --version

If it's not installed, you can install it using:
sudo apt update
sudo apt install python3 python3-venv python3-pip

Step 2: Create a Project Directory
Navigate to your desired project directory (or create a new one):
mkdir my_project
cd my_project
Step 3: Create a Virtual Environment
Create a virtual environment named myenv (you can choose a different name if you prefer):
python3 -m venv myenv
Step 4: Activate the Virtual Environment
Activate the virtual environment with:
source myenv/bin/activate
You should see the environment name in your terminal prompt, indicating that it’s active.
Step 5: Install Packages
Install any packages you need using pip. For example:
pip install requests flask
Step 6: Generate a Requirements File
To create a requirements.txt file that lists all installed packages and their versions, run:
pip freeze > requirements.txt
Step 7: List Installed Packages
To see all installed packages in the virtual environment, use:
pip list
Step 8: Deactivate the Virtual Environment
When you're done working in the virtual environment, deactivate it by running:
deactivate