install-python-environment

When to Use

When you need to set up a Python development environment on a new machine or want to ensure proper Python installation with package management capabilities.

Prerequisites

• Administrative access to your system
• Internet connection for downloading packages

Procedure

1. Download Python installer: Visit https://www.python.org/downloads/ and download the latest stable version for your OS
2. Run installer with PATH option: python-3.x.x.exe (Windows) or use package manager on Linux/macOS
3. Verify installation: python --version and python -m pip --version
4. Upgrade pip: python -m pip install --upgrade pip
5. Create virtual environment: python -m venv myproject
6. Activate virtual environment: myproject\Scripts\activate (Windows) or source myproject/bin/activate (Linux/macOS)
7. Install common packages: pip install requests numpy pandas
8. Create requirements file: pip freeze > requirements.txt

Verification

• python --version shows Python 3.x.x
• pip list shows installed packages
• python -c "import sys; print(sys.executable)" shows correct Python path
• Virtual environment prompt appears when activated

Pitfalls

• Not adding Python to PATH during installation
• Using system Python instead of virtual environment
• Forgetting to activate virtual environment before installing packages
• Installing packages globally instead of in virtual environment

Sources

• https://www.python.org/
• https://www.w3schools.com/python/
• https://en.wikipedia.org/wiki/Python_(programming_language)