bin(x) Convert an integer number to a binary string. The result is a valid Python expression. If x is not a Python int object, it has to define an __index__() method that returns an integer.

devpoll.close() Close the file descriptor of the polling object. New in version 3.4.

match.span([group]) For a match m, return the 2-tuple (m.start(group), m.end(group)). Note that if group did not contribute to the match, this is (-1, -1). group defaults to zero, the entire match.

stringprep.in_table_c11_c12(code) Determine whether code is in tableC.1 (Space characters, union of C.1.1 and C.1.2).

exception doctest.DocTestFailure(test, example, got) An exception raised by DocTestRunner to signal that a doctest example’s actual output did not match its expected output. The constructor arguments are used to initialize the attributes of the same names.

class logging.handlers.SocketHandler(host, port) Returns a new instance of the SocketHandler class intended to communicate with a remote machine whose address is given by host and port. Changed in version 3.4: If port is specified as None, a Unix domain socket is created using the value in host - otherwise, a TCP socket is created. close() Closes the socket. emit() Pickles the record’s attribute dictionary and writes it to the socket in binary format. If there is an error with the

operator.iand(a, b) operator.__iand__(a, b) a = iand(a, b) is equivalent to a &= b.

imaplib.ParseFlags(flagstr) Converts an IMAP4 FLAGS response to a tuple of individual flags.

SSLSocket.get_channel_binding(cb_type="tls-unique") Get channel binding data for current connection, as a bytes object. Returns None if not connected or the handshake has not been completed. The cb_type parameter allow selection of the desired channel binding type. Valid channel binding types are listed in the CHANNEL_BINDING_TYPES list. Currently only the ‘tls-unique’ channel binding, defined by RFC 5929, is supported. ValueError will be raised if an unsupported channel binding type is requ

sys.float_repr_style A string indicating how the repr() function behaves for floats. If the string has value 'short' then for a finite float x, repr(x) aims to produce a short string with the property that float(repr(x)) == x. This is the usual behaviour in Python 3.1 and later. Otherwise, float_repr_style has value 'legacy' and repr(x) behaves in the same way as it did in versions of Python prior to 3.1. New in version 3.1.