Finding the source code for built-in Python functions?

Question

Is there a way to see how built in functions work in python? I don\'t mean just how to use them, but also how were they built, what is the code behind sorted

Answer 1

As mentioned by @Jim, the file organization is described here. Reproduced for ease of discovery:

For Python modules, the typical layout is:

Lib/.py
Modules/_.c (if there’s also a C accelerator module)
Lib/test/test_.py
Doc/library/.rst

For extension-only modules, the typical layout is:

Modules/module.c
Lib/test/test_.py
Doc/library/.rst

For builtin types, the typical layout is:

Objects/object.c
Lib/test/test_.py
Doc/library/stdtypes.rst

For builtin functions, the typical layout is:

Python/bltinmodule.c
Lib/test/test_builtin.py
Doc/library/functions.rst

Some exceptions:

builtin type int is at Objects/longobject.c
builtin type str is at Objects/unicodeobject.c
builtin module sys is at Python/sysmodule.c
builtin module marshal is at Python/marshal.c
Windows-only module winreg is at PC/winreg.c