4.1. Exercises

Exceptions

Documenting Exceptions

def factor_of_10(number):
    """
    Takes a number and determines if it is a factor of 10 
    Parameters
    ----------
    number : int
        the value to check
      
    Returns
    -------
    bool
        Returns True if number is a multiple of 10 and False otherwise
        
    Raises
    ------
    TypeError
        If the input argument number is not of type int 
      
    Examples
    --------
    >>> factor_of_10(72)
    False
    """
    if not isinstance(number, int): 
        raise TypeError("the input value of number is not of type int")
        
    if number % 10 == 0: 
        factor = True
    else:
        factor = False
        
    return factor

def factor_of_10(number):
    """
    Takes a number and determines if it is a factor of 10 
    Parameters
    ----------
    number : int
        the value to check
      
    Returns
    -------
    bool
        Returns True if number is a multiple of 10 and False otherwise
        
    Exceptions
    ------
    TypeError
        If the input argument number is not of type int 
      
    Examples
    --------
    >>> factor_of_10(72)
    False
    """
    if not isinstance(number, int): 
        raise TypeError("the input value of number is not of type int")
        
    if number % 10 == 0: 
        factor = True
    else:
        factor = False
        
    return factor

Raising Exceptions

Instructions:
Running a coding exercise for the first time could take a bit of time for everything to load. Be patient, it could take a few minutes.

When you see ____ in a coding exercise, replace it with what you assume to be the correct code. Run it and see if you obtain the desired output. Submit your code to validate if you were correct.

Make sure you remove the hash (#) symbol in the coding portions of this question. We have commented them so that the line won’t execute and you can test your code after each step.

Let’s build on the BMI function we made in module 5. This time we want to raise 2 exceptions.

def bmi_calculator(height, weight):
    return (weight / (height ** 2)) * 702

Tasks:

Write an exception that checks if height is of type float.
Write a second exception that raises an error if weight is 0 or less.
Test your function with the values given in variable tall and mass.