iterator.__iter__() Return the iterator object itself. This is required to allow both containers and iterators to be used with

class.mro() This method can be overridden by a metaclass to customize the method resolution order for its instances. It is called

str.ljust(width[, fillchar]) Return the string left justified in a string of length width. Padding is done using the

readonly A bool indicating whether the memory is read only.

str.zfill(width) Return a copy of the string left filled with ASCII '0' digits to make a string of length width

str.swapcase() Return a copy of the string with uppercase characters converted to lowercase and vice versa. Note that it is

bytearray.rindex(sub[, start[, end]]) Like rfind() but raises

difference_update(other, ...) set -= other | ... Update the set, removing elements found in others.

clear() Remove all items from the dictionary.

class list([iterable]) Lists may be constructed in several ways: Using a