unittest.assertEqual giving failure on result although it's ok.

[buran]

you want to compare annual_salary attribute, not the object itself

self.assertEqual(self.employee_one.annual_salary, 505000)

also in the Employee.give_raise() method there is line 11 int(raise_amount). Effectivelly it will do nothing because you don't assign the converted value

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By the way, in your give_raise method you don't need the if else block.
If the user does not supply raise_amount, the default value will be used. i.e. if raise_amount will always be True, unless user does not supply something like None. But you don't try to validate the input so you will just end up with exception. In other words at the moment else part will not be executed even if user does not supply explicitly raise_amount

def give_raise(self, raise_amount=5000):
    """Adds a number to the employee annual salary."""
    self.annual_salary += raise_amount