# Raise

TODO: ADD MORE

- the student is required to raise an `Exception` for incorrect input [hamming](../exercise-concepts/hamming.md)
- an appropriate Exceptions must be raised with the `raise` keyword [phone-number](../exercise-concepts/phone-number.md)
- the user could find useful the `Exception` concept to `raise` a `ValueError` for incorrect input [variable-length-quantity](../exercise-concepts/variable-length-quantity.md)
