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:

name = 'Waldo'
text = 'Can you find where Wally is?'

if text.find(name):
    print('Found Waldo')
else:
    print('Cannot find Waldo')

## Explanation




> **Note**: The `str.find` [documentation](https://docs.python.org/3/library/stdtypes.html#str.find) says, “Return `-1` if sub is not found.”

We have two Boolean values in Python: True and False. They weren’t always part of Python, however. They were added in Python 2.3.

How is it possible to do logical operations without `True` and `False`? Well, there are rules that can help us! For example, we should assume everything is `True` except these listed below:


- 0 numbers (like 0, 0.0, 0+0j, and so on).
- Empty collections (like [], {}, ‘’, and others).
- `None`.
- `False`.


If we want to check whether a string contains another, we can use the in operator.
```
if name in text: 
  print('Found Waldo')
else:
  print('Cannot find Waldo')
```
This will print `Cannot find Waldo`.
If we want to define a Boolean logic for our object, we need to implement the `bool` special method.


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

# Explanation




> **Note**: The `str.find` [documentation](https://docs.python.org/3/library/stdtypes.html#str.find) says, “Return `-1` if sub is not found.”

We have two Boolean values in Python: True and False. They weren’t always part of Python, however. They were added in Python 2.3.

How is it possible to do logical operations without `True` and `False`? Well, there are rules that can help us! For example, we should assume everything is `True` except these listed below:


- 0 numbers (like 0, 0.0, 0+0j, and so on).
- Empty collections (like [], {}, ‘’, and others).
- `None`.
- `False`.


If we want to check whether a string contains another, we can use the in operator.
```
if name in text: 
  print('Found Waldo')
else:
  print('Cannot find Waldo')
```
This will print `Cannot find Waldo`.
If we want to define a Boolean logic for our object, we need to implement the `bool` special method.


Let’s learn how the str.find function works in Python.

Before We Begin

Python Puzzles

Wrapping Up

Puzzle 15: Explanation

Try it yourself

Explanation