Traceback (most recent call last): File "/home/runner/unit_tests.py", line 27, in test_handles_custom_input self.assertEqual(product_of_values({'z':2,'y':2,'x':2,'w':2}),16) AssertionError: None != 16 code example

Example: self.assertequal python

'''
In other words, assertEquals is a function to check if two variables are equal, for purposes of automated testing:
'''

def assertEquals(var1, var2):
    if var1 == var2:
        return True
    else:
        return False