stat.S_ISSOCK(mode) Return non-zero if the mode is from a socket.

doctest.register_optionflag(name) Create a new option flag with a given name, and return the new flag’s integer value.

ErrorHandler.error(exception) Called when the parser encounters a recoverable error. If this method does not raise an exception

Morsel.key The name of the cookie. Deprecated

unlock() Three locking mechanisms are used—dot locking and, if available, the flock() and lockf()

ArgumentParser.add_argument_group(title=None, description=None) By default, ArgumentParser groups command-line

count Number of memory blocks in the new snapshot (int): 0 if the memory blocks have been released

classmethod invalidate_caches() Calls importlib.abc.PathEntryFinder.invalidate_caches() on all finders stored in

Unpacker.unpack_farray(n, unpack_item) Unpacks and returns (as a list) a fixed length array of homogeneous items. n

server_bind() Called by the server’s constructor to bind the socket to the desired address. May be overridden.