Discover challenging Python brain teasers that test your skills and stretch your thinking. Gain insights into advanced concepts and enhance your understanding of this versatile language.

Forget Scrabble, Boggle, or Wordle. Tease your mind and test your skills with these fun brain teasers designed to stretch your thinking and expand your understanding of one of the most widely used languages out there. 

Python is simple. These puzzles are not. Good luck!

Python Brain Teasers

# Try it yourself
Try executing the code below to verify the result:

nums = [4, 1, 3, 2]
rev = reversed(nums) 
print(sorted(rev) == sorted(rev))


# Explanation
The built-in reversed function returns an `iterator`.

Python’s `iterators` can do two things:

- Return the next item using a `for` loop or calling the built-in `next` function.
- Signal that the `iterator` is exhausted and that there are no more items by raising `StopIteration` .

The first call to `sorted(rev)` consumes everything from the iterator. When we call `sorted(rev)` the second time, the iterator will immediately raise `StopIteration` and the function `sorted` will assume an empty `iterator`.
The result of the first `sorted(rev)` is `[1, 2, 3, 4]`. The result of the second `sorted(rev)` is `[]` (the empty list).
This is why the comparison returns `False`.



Let’s learn how the built-in reversed and sorted functions behave in Python.

Before We Begin

Python Puzzles

Wrapping Up

Puzzle 8: Explanation

Try it yourself