Wheel
Noun · Development
Definitions
A pre-built Python package distribution format (.whl) defined in PEP 427 that contains compiled extensions and metadata in a standardized zip archive, enabling pip to install packages without running setup.py or invoking a compiler — significantly faster than installing from source distributions (sdist).
In plain English: A pre-packaged Python library format that installs quickly because everything is already compiled and ready to use.
Example: "The CI build went from eight minutes to two once we started caching the wheel files instead of rebuilding numpy from source every time."