sys.__interactivehook__ When this attribute exists, its value is automatically called (with no arguments) when the interpreter is launched in interactive mode. This is done after the PYTHONSTARTUP file is read, so that you can set this hook there. The site module sets this. New in version 3.4.

class enum.IntEnum Base class for creating enumerated constants that are also subclasses of int.

class multiprocessing.Barrier(parties[, action[, timeout]]) A barrier object: a clone of threading.Barrier. New in version 3.3.

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

want The expected output from running the example’s source code (either from stdout, or a traceback in case of exception). want ends with a newline unless no output is expected, in which case it’s an empty string. The constructor adds a newline when necessary.

read_string(string, source='') Parse configuration data from a string. Optional argument source specifies a context-specific name of the string passed. If not given, '<string>' is used. This should commonly be a filesystem path or a URL. New in version 3.2.

input_codec The name of the Python codec used to convert the input_charset to Unicode. If no conversion codec is necessary, this attribute will be None.

turtle.done() Starts event loop - calling Tkinter’s mainloop function. Must be the last statement in a turtle graphics program. Must not be used if a script is run from within IDLE in -n mode (No subprocess) - for interactive use of turtle graphics. >>> screen.mainloop()

exception mailbox.Error The based class for all other module-specific exceptions.

IMAP4.debug Integer value to control debugging output. The initialize value is taken from the module variable Debug. Values greater than three trace each command.