def _call_matcher()

in later/unittest/backport/mock.py [0:0]

• 18 lines of code
• 6 McCabe index (conditional complexity)

    def _call_matcher(self, _call):
        """
        Given a call (or simply an (args, kwargs) tuple), return a
        comparison key suitable for matching with other calls.
        This is a best effort method which relies on the spec's signature,
        if available, or falls back on the arguments themselves.
        """

        if isinstance(_call, tuple) and len(_call) > 2:
            sig = self._get_call_signature_from_name(_call[0])
        else:
            sig = self._spec_signature

        if sig is not None:
            if len(_call) == 2:
                name = ''
                args, kwargs = _call
            else:
                name, args, kwargs = _call
            try:
                bound_call = sig.bind(*args, **kwargs)
                return call(name, bound_call.args, bound_call.kwargs)
            except TypeError as e:
                return e.with_traceback(None)
        else:
            return _call