While The Python Language Reference describes the exact syntax andsemantics of the Python language, this library reference manualdescribes the standard library that is distributed with Python. It alsodescribes some of the optional components that are commonly includedin Python distributions.
The Python installers for the Windows platform usually includethe entire standard library and often also include many additionalcomponents. For Unix-like operating systems Python is normally providedas a collection of packages, so it may be necessary to use the packagingtools provided with the operating system to obtain some or all of theoptional components.
In addition to the standard library, there is an active collection ofhundreds of thousands of components (from individual programs and modules topackages and entire application development frameworks), available fromthe Python Package Index.
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