email.message.Message: Representing an email message using the compat32 API

What is the most efficient way to concatenate many strings together?

Why does a_tuple[i] += ['item'] raise an exception when the addition works?

PEP 3118: New memoryview implementation and buffer protocol documentation

PEP 476: Enabling certificate verification by default for stdlib http clients

PEP 471 - os.scandir() function -- a better and faster directory iterator

Why must 'self' be used explicitly in method definitions and calls?

argparse --- Parser for command-line options, arguments and sub-commands

dummy_threading --- Drop-in replacement for the threading module

functools --- Higher-order functions and operations on callable objects

itertools --- Functions creating iterators for efficient looping

sysconfig --- Provide access to Python's configuration information