Track 10 · Lesson 11 of 12

Dependencies and requirements

Record a project's dependencies in requirements.txt and pyproject.toml, read version specifiers, pin versions for reproducible installs, and parse both formats with code.

You will be able to

• Read and write requirements.txt files, including comments and version specifiers
• Explain the difference between pinning exact versions and allowing a range, and when to use each
• Check whether a version satisfies a specifier such as >=2.31,<3 or ~=2.2
• Read project metadata and dependencies from pyproject.toml with tomllib