Invokes the built-in help system.


help (object)

Optional. If no argument is given, the interactive help system starts on the interpreter console. If the argument is a string, then the string is looked up as the name of a module, function, class, method, keyword, or documentation topic, and a help page is printed on the console. If the argument is any other kind of object, a help page on the object is generated.

Return Value


Time Complexity



>>> help()
Welcome to Python 2.7!  This is the online help utility.

>>> help(set)
Help on class set in module __builtin__:
class set(object)

See Also