itertools

Provides iterator utilities for common iteration patterns.

This module includes functions for creating specialized iterators:

• count() - Creates an infinite counter with customizable start and step values
• cycle() - Cycles through an iterable indefinitely
• drop_while() - Drops elements while predicate is true, then yields the rest
• product() - Computes the Cartesian product of two, three, or four iterables
• repeat() - Repeats an element a specified number of times
• take_while() - Yields elements while predicate is true

These utilities enable functional-style iteration patterns and composable iterator operations.

Functions

• ​count: Constructs an iterator that starts at the value start with a stride of step.
• ​cycle: Creates an iterator that cycles through an iterable indefinitely.
• ​drop_while: Creates an iterator that drops elements while predicate returns True.
• ​product: Returns an iterator that yields tuples of the elements of the outer product of the iterables.
• ​repeat: Constructs an iterator that repeats the given element a specified number of times.
• ​take_while: Creates an iterator that yields elements while predicate returns True.