Method _bind

Lib/inspect.py:3095–3235

Private method. Don't use directly.

(self, args, kwargs, *, partial=False)

        return self._hash_basis() == other._hash_basis()

    def _bind(self, args, kwargs, *, partial=False):
        """Private method. Don't use directly."""

        arguments = {}

        parameters = iter(self.parameters.values())
        parameters_ex = ()
        arg_vals = iter(args)

        pos_only_param_in_kwargs = []

        while True:
            # Let's iterate through the positional arguments and corresponding
            # parameters
            try:
                arg_val = next(arg_vals)
            except StopIteration:
                # No more positional arguments
                try:
                    param = next(parameters)
                except StopIteration:
                    # No more parameters. That's it. Just need to check that
                    # we have no `kwargs` after this while loop
                    break
                else:
                    if param.kind == _VAR_POSITIONAL:
                        # That's OK, just empty *args.  Let's start parsing
                        # kwargs
                        break
                    elif param.name in kwargs:
                        if param.kind == _POSITIONAL_ONLY:
                            if param.default is _empty:
                                msg = f'missing a required positional-only argument: {param.name!r}'
                                raise TypeError(msg)
                            # Raise a TypeError once we are sure there is no
                            # **kwargs param later.
                            pos_only_param_in_kwargs.append(param)
                            continue
                        parameters_ex = (param,)
                        break
                    elif (param.kind == _VAR_KEYWORD or
                                                param.default is not _empty):
                        # That's fine too - we have a default value for this
                        # parameter.  So, lets start parsing `kwargs`, starting
                        # with the current parameter
                        parameters_ex = (param,)
                        break
                    else:
                        # No default, not VAR_KEYWORD, not VAR_POSITIONAL,
                        # not in `kwargs`
                        if partial:
                            parameters_ex = (param,)
                            break
                        else:
                            if param.kind == _KEYWORD_ONLY:
                                argtype = ' keyword-only'
                            else:
                                argtype = ''