## Summary
Fixed a small issue in the comparison operator examples. The original text described the `not in` operator but didn’t include a working example or had a typo.
## Changes Made
- Added missing example for `not in` comparison
- Corrected description from `(x in y)` to `(x not in y)`
## Why This Change Was Needed
This makes the tutorial more accurate and consistent. The previous version could confuse beginners since the explanation didn’t match the examples.
## Example Output
```python
print('B not in Asabeneh:', 'B' not in 'Asabeneh') # True
Resolved errors(need some reviewing, might have missed some errors)
Added comments
Changed print to return (to avoid None)
Removed <\div>
Reviewed exercises and numbered them
Removed ";" in some part (; doesn't trigger error)
Reviewed the python files
