Using doctest
The doctest module provides a straightforward way to test your functions using examples included in docstrings. In this exercise, you'll have the opportunity to practice testing with the doctest module.
The doctest module has already been pre-loaded into your environment.
This exercise is part of the course
Case Study: Building Software in Python
Exercise instructions
- In the
FinancialCalculatorclass, calculate the monthly interest, which is the quotient of the yearly interest and the number of months in a year (12). - Use the relevant function from the
doctestmodule to test your function's example code.
Remember, doctest provides only an output if the code/docs are incorrect.
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
class FinancialCalculator(BasicCalculator):
def monthly_interest(self, annual_interest_rate):
'''
>>> monthly_interest(0.06)
0.005
'''
# Calculate the quotient of the annual_interest_rate and 12 (the number of months in a year).
return self.divide(____, ____)
# Run doctest
____