1. itertools.product(): A Tricky Way To Avoid Nested Loops

2. itertools.compress(): A Convenient Way To Filter Data

3. itertools.groupby(): Group Elements of an Iterable

4. itertools.combinations(): Get All Combinations of a Given Length From an Iterable

5. itertools.permutations(): Get All Permutations of a Given Length From an Iterable

6. itertools.accumulate(): Generate Accumulated Items from an Iterable

7. itertools.repeat(), itertools.cycle(), itertools.count(): Make Infinite Iterables

8. itertools.pairwise(): Get Tuples of Pairs Easily

9. itertools.takewhile(): Filter Elements in a Different Way

10. itertools.dropwhile(): A Reverse Operation of itertools.takewhile()