Source code: Lib/http/server.py This module defines classes for implementing HTTP servers. Availability: not Emscripten, not WASI. This module does not work or is not available on WebAssembly platf...

The test package contains all regression tests for Python as well as the modules test.support and test.regrtest. test.support is used to enhance your tests while test.regrtest drives the testing su...

The atexit module defines functions to register and unregister cleanup functions. Functions thus registered are automatically executed upon normal interpreter termination. atexit runs these functio...

Python’s complex number objects are implemented as two distinct types when viewed from the C API: one is the Python object exposed to Python programs, and the other is a C structure which represent...

Source code: Lib/concurrent/futures/thread.py and Lib/concurrent/futures/process.py The concurrent.futures module provides a high-level interface for asynchronously executing callables. The asynchr...

Source code: Lib/argparse.py Tutorial: This page contains the API reference information. For a more gentle introduction to Python command-line parsing, have a look at the argparse tutorial. The arg...

Source code: Lib/email/message.py The central class in the email package is the EmailMessage class, imported from the email.message module. It is the base class for the email object model. EmailMes...

Source code: Lib/glob.py The glob module finds all the pathnames matching a specified pattern according to the rules used by the Unix shell, although results are returned in arbitrary order. No til...

Python code in one module gains access to the code in another module by the process of importing it. The import statement is the most common way of invoking the import machinery, but it is not the ...

Source code: Lib/doctest.py The doctest module searches for pieces of text that look like interactive Python sessions, and then executes those sessions to verify that they work exactly as shown. Th...