[]def test_with_zero(self)with self assertraises(zerodivisionerror)average([]if __name__ ="__main__"unittest main(the context manager allows us to write the code the way we would normally write it (by calling functions or executing code directly)rather than having to wrap the function call in another function call there are also several other assertion methodssummarized in the following tablemethods description assertgreater accept two comparable objects and ensure the named inequality holds assertgreaterequal assertless assertlessequal ensure an element is (or is notan element in container object assertin assertnotin ensure an element is (or is notthe exact value none (but not another falsey valueassertisnone assertisnotnone assertsameelements ensure two container objects have the same elementsignoring the order assertsequenceequalassertdictequal ensure two containers have the same elements in the same order if there' failureshow code diff comparing the two lists to see where they differ the last four methods also test the type of the list assertsetequal assertlistequal asserttupleequal each of the assertion methods accepts an optional argument named msg if suppliedit is included in the error message if the assertion fails this is useful for clarifying what was expected or explaining where bug may have occurred to cause the assertion to fail