理解Python中whl文件：wheel、metadata

• whl

  A whl file is a package saved in the Wheel format, which is the standard built-package format used for Python distributions.

  It contains all the files for a Python install and metadata, which includes the version of the wheel implementation and specification used to package it.

  whl files are compressed using Zip compression.

  There are three types of WHL files:

  1. Universal Wheel
  2. Pure Python Wheel
  3. Platform Wheel

  metadata:

  metadata describes other data.

  It provides information about a certain item’s content.

  类似旁白，一张图的metadata描述了这张图的大小、长短等信息

• wheel

  python library

  This library is the reference implementation of the Python wheel packaging standard, as defined in PEP427

  A wheel is a ZIP-format archive with a specially formatted file name and the .whl extension.

• Tutorial

  Chapter 39 - Python wheels

  python library wheel