def main():
"""
This function is used to execute the module as a standalone
module.
"""
parser = argparse.ArgumentParser()
group1 = parser.add_argument_group()
group2 = parser.add_mutually_exclusive_group(required=True)
group1.add_argument('x',
help='The first value in the equation',
type=check_type)
group1.add_argument('y',
help='The second value in the equation',
type=check_type)
group2.add_argument('--add', action='store_true')
group2.add_argument('--subtract', action='store_true')
group2.add_argument('--multiply', action='store_true')
group2.add_argument('--divide', action='store_true')
group2.add_argument('--modulus', action='store_true')
args = parser.parse_args()
if args.add:
print(add(args.x, args.y))
if args.subtract:
print(subtract(args.x, args.y))
if args.multiply:
print(multiply(args.x, args.y))
if args.divide:
print(divide(args.x, args.y))
if args.modulus:
print(modulus(args.x, args.y))
def test_divide_integer_by_zero_float(self):
"""Validates that an exception raises when dividing by 0"""
with self.assertRaises(ZeroDivisionError):
calculator.divide(4, 0.0)
def test_divide_non_int_non_float_exception(self):
"""Validates that an exception raises when adding strings"""
data_sets = [[], '', {}]
for data_set in data_sets:
with self.assertRaises(TypeError):
calculator.divide(data_set, data_set)
def test_divide_remainder_float(self):
"""Validates that add yields the expected results"""
self.assertEqual(calculator.divide(5.0, 2.0), 2.0)
def test_divide_remainder_integer(self):
"""Validates that add yields the expected results"""
self.assertEqual(calculator.divide(5, 2), 2)