Why to use ?
This module incorporates functions that utilize computational resources efficiently. Using this module also tends to enhance the readability and maintainability of the code.
Itertools in Python3
Itertools is a module in Python, it is used to iterate over data structures that can be stepped over using a for-loop. Such data structures are also known as iterables. This module works as a fast, memory-efficient tool that is used either by themselves or in combination to form iterator algebra.