What It Is
A plain text file listing the libraries your project needs. Anyone can reproduce your environment with a single command.
Format
requests==2.31.0 numpy>=1.24,<2.0 flask
Commands
pip freeze > requirements.txt # capture current versions pip install -r requirements.txt # install from file
Version Specifiers
==exact version.>=,<bounds.- No operator — latest available.
Tips
- Pin exact versions for reproducibility (
==). - Separate dev tools into
requirements-dev.txt. - Consider
pip-toolsorpoetryfor bigger projects.
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