"""

There are many testing Frameworks -

1 - unittest - In the Python Standard Library
2 - nose - Not in the python Standard library
3 - pytest - Not in the python Standard Library

pytest is most popular unit testing framework

! pip install pytest

We write our basic python code ; Now we need to test this using pytest

"""

def add(x, y = 2):
    return x + y

def product(x, y = 2):
    return x * y


