class doctest.DebugRunner(checker=None, verbose=None, optionflags=0) A subclass of DocTestRunner that raises an

maxDiff This attribute controls the maximum length of diffs output by assert methods that report diffs on failure. It defaults

class typing.MappingView(Sized, Iterable[T_co]) A generic version of

class typing.Mapping(Sized, Iterable[KT], Container[KT], Generic[VT_co]) A generic version of

@typing.no_type_check(arg) Decorator to indicate that annotations are not type hints. The argument

unittest.installHandler() Install the control-c handler. When a signal.SIGINT is received (usually in response

unittest.mock.sentinel The sentinel object provides a convenient way of providing unique objects for your tests

class typing.Union Union type; Union[X, Y] means either X or Y. To define a union

docstring The string that the test was extracted from, or ‘None’ if the string is unavailable, or if the test was not extracted

get_doctest(string, globs, name, filename, lineno) Extract all doctest examples from the given string, and collect them into