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What is Pip Requirements File?

A text file listing Python package dependencies with version specifications for reproducible project installations.

A requirements.txt file lists packages needed by a project, one per line, with optional version constraints: Django==4.2, requests>=2.28, numpy~=1.24. Install all dependencies with pip install -r requirements.txt.

Generated with pip freeze > requirements.txt. Modern alternatives include Pipfile (Pipenv), pyproject.toml (Poetry, PEP 517), and conda environment.yml. Pinning exact versions ensures reproducible builds across environments.

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