Basic Python Commands Cheat Sheet

🔹 Virtual Environment Commands

python -m venv myenv   # Create a virtual environment
myenv\Scripts\activate  # Activate the virtual environment (Windows CMD)
myenv\Scripts\Activate.ps1  # Activate in PowerShell
source myenv/bin/activate  # Activate in macOS/Linux

deactivate  # Deactivate the virtual environment

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🔹 Running Python Files

python myscript.py  # Run a Python script
python -i myscript.py  # Run a script and enter interactive mode after execution

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🔹 pip (Python Package Manager) Commands

pip install package_name  # Install a package
pip install requests numpy pandas  # Install multiple packages
pip install -r requirements.txt  # Install packages from a file
pip list  # List installed packages
pip freeze  # Show installed packages in a format usable for a requirements file
pip freeze > requirements.txt  # Save installed packages to a file
pip uninstall package_name  # Uninstall a package
pip show package_name  # Show details about an installed package

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🔹 Checking Python & pip Versions

python --version  # Check Python version
pip --version  # Check pip version

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🔹 Python Interactive Shell

python  # Open Python interactive shell
exit()  # Exit the Python shell

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🔹 Python Package Configuration (pip)

pip config set global.index-url https://your-private-repo-url/  # Set custom repository
pip config set global.trusted-host your-private-repo-url  # Set trusted host
pip config set global.timeout 60  # Set global timeout for pip operations

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🔹 Miscellaneous Python Commands

python -m http.server 8000  # Start a simple HTTP server on port 8000
python -m site  # Show Python site-packages locations
python -m ensurepip  # Ensure pip is installed

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🚀 Conclusion

This cheat sheet provides essential Python commands for virtual environments, running scripts, package management, and system utilities. Keep it handy for quick reference and efficient Python development!