marshal.version Indicates the format that the module uses. Version 0 is the historical format, version 1 shares interned strings and version 2 uses a binary format for floating point numbers. Version 3 adds support for object instancing and recursion. The current version is 4.

IMAP4.unsubscribe(mailbox) Unsubscribe from old mailbox.

shlex.whitespace Characters that will be considered whitespace and skipped. Whitespace bounds tokens. By default, includes space, tab, linefeed and carriage-return.

array.tobytes() Convert the array to an array of machine values and return the bytes representation (the same sequence of bytes that would be written to a file by the tofile() method.) New in version 3.2: tostring() is renamed to tobytes() for clarity.

sqrt(context=None) Return the square root of the argument to full precision.

popleft() Remove and return an element from the left side of the deque. If no elements are present, raises an IndexError.

sys.copyright A string containing the copyright pertaining to the Python interpreter.

exception copy.error Raised for module specific errors.

Unpacker.unpack_bytes() Unpacks and returns a variable length byte stream, similarly to unpack_string().

calendar.monthrange(year, month) Returns weekday of first day of the month and number of days in month, for the specified year and month.