requirements.txt

requirements.txt is a plain text file used in Python projects to specify the dependencies (libraries and packages) required for the project to run. It lists package names and version constraints, allowing for reproducible environments. This file is commonly used with package managers like pip to install all dependencies at once.

Also known as: requirements, requirements file, pip requirements, reqs.txt, dependencies.txt

Why learn requirements.txt?

Developers should use requirements.txt to manage project dependencies, ensuring consistency across different environments (e.g., development, testing, production) and facilitating collaboration. It is essential for Python applications to avoid version conflicts and simplify deployment, particularly in web development, data science, and automation scripts where external libraries are heavily relied upon.

Learning Resources

• docs: pip documentation: Requirements Files
• tutorial: Real Python: Python Virtual Environments: A Primer
• docs: Python Packaging User Guide: Requirements Files
• video: YouTube: Python Dependency Management with requirements.txt