source A string containing the example’s source code. This source code consists of a single Python statement, and always ends with a newline; the constructor adds a newline when necessary.

copy() Return a new set with a shallow copy of s.

NotImplemented Special value which should be returned by the binary special methods (e.g. __eq__(), __lt__(), __add__(), __rsub__(), etc.) to indicate that the operation is not implemented with respect to the other type; may be returned by the in-place binary special methods (e.g. __imul__(), __iand__(), etc.) for the same purpose. Its truth value is true.

FTP.size(filename) Request the size of the file named filename on the server. On success, the size of the file is returned as an integer, otherwise None is returned. Note that the SIZE command is not standardized, but is supported by many common server implementations.

calendar.day_abbr An array that represents the abbreviated days of the week in the current locale.

pos The start index of doc where parsing failed.

class collections.abc.AsyncIterator ABC for classes that provide __aiter__ and __anext__ methods. See also the definition of asynchronous iterator. New in version 3.5.

with_netmask A string representation of the interface with the network as a net mask. >>> interface = IPv4Interface('192.0.2.5/24') >>> interface.with_netmask '192.0.2.5/255.255.255.0'

platform.system() Returns the system/OS name, e.g. 'Linux', 'Windows', or 'Java'. An empty string is returned if the value cannot be determined.

html.entities.codepoint2name A dictionary that maps Unicode code points to HTML entity names.