Python in a Nutshell

Name

__iter__

Synopsis

__iter__(self)

For a request to loop on all items of x (typically for item in x), Python calls x .__iter__( ) to obtain an iterator on x. The built-in function iter( x ) also calls x .__iter__( ). If __iter__ is absent and x is a sequence, iter( x ) synthesizes and returns an iterator object that wraps x and returns x [0], x [1], and so on, until one of these item accesses raises IndexError to indicate the end of the sequence.