Remove bundled funcsigs.

2 files changed, 0 insertions, 817 deletions

diff --git a/ot/externals/__init__.py b/ot/externals/__init__.py
deleted file mode 100644
index e69de29..0000000
--- a/ot/externals/__init__.py
+++ /dev/null
diff --git a/ot/externals/funcsigs.py b/ot/externals/funcsigs.py
deleted file mode 100644
index 106bde7..0000000
--- a/ot/externals/funcsigs.py
+++ /dev/null
@@ -1,817 +0,0 @@
-# Copyright 2001-2013 Python Software Foundation; All Rights Reserved
-"""Function signature objects for callables
-
-Back port of Python 3.3's function signature tools from the inspect module,
-modified to be compatible with Python 2.7 and 3.2+.
-"""
-from __future__ import absolute_import, division, print_function
-import itertools
-import functools
-import re
-import types
-
-from collections import OrderedDict
-
-__version__ = "0.4"
-
-__all__ = ['BoundArguments', 'Parameter', 'Signature', 'signature']
-
-
-_WrapperDescriptor = type(type.__call__)
-_MethodWrapper = type(all.__call__)
-
-_NonUserDefinedCallables = (_WrapperDescriptor,
-                            _MethodWrapper,
-                            types.BuiltinFunctionType)
-
-
-def formatannotation(annotation, base_module=None):
-    if isinstance(annotation, type):
-        if annotation.__module__ in ('builtins', '__builtin__', base_module):
-            return annotation.__name__
-        return annotation.__module__ + '.' + annotation.__name__
-    return repr(annotation)
-
-
-def _get_user_defined_method(cls, method_name, *nested):
-    try:
-        if cls is type:
-            return
-        meth = getattr(cls, method_name)
-        for name in nested:
-            meth = getattr(meth, name, meth)
-    except AttributeError:
-        return
-    else:
-        if not isinstance(meth, _NonUserDefinedCallables):
-            # Once '__signature__' will be added to 'C'-level
-            # callables, this check won't be necessary
-            return meth
-
-
-def signature(obj):
-    '''Get a signature object for the passed callable.'''
-
-    if not callable(obj):
-        raise TypeError('{0!r} is not a callable object'.format(obj))
-
-    if isinstance(obj, types.MethodType):
-        sig = signature(obj.__func__)
-        if obj.__self__ is None:
-            # Unbound method: the first parameter becomes positional-only
-            if sig.parameters:
-                first = sig.parameters.values()[0].replace(
-                    kind=_POSITIONAL_ONLY)
-                return sig.replace(
-                    parameters=(first,) + tuple(sig.parameters.values())[1:])
-            else:
-                return sig
-        else:
-            # In this case we skip the first parameter of the underlying
-            # function (usually `self` or `cls`).
-            return sig.replace(parameters=tuple(sig.parameters.values())[1:])
-
-    try:
-        sig = obj.__signature__
-    except AttributeError:
-        pass
-    else:
-        if sig is not None:
-            return sig
-
-    try:
-        # Was this function wrapped by a decorator?
-        wrapped = obj.__wrapped__
-    except AttributeError:
-        pass
-    else:
-        return signature(wrapped)
-
-    if isinstance(obj, types.FunctionType):
-        return Signature.from_function(obj)
-
-    if isinstance(obj, functools.partial):
-        sig = signature(obj.func)
-
-        new_params = OrderedDict(sig.parameters.items())
-
-        partial_args = obj.args or ()
-        partial_keywords = obj.keywords or {}
-        try:
-            ba = sig.bind_partial(*partial_args, **partial_keywords)
-        except TypeError:
-            msg = 'partial object {0!r} has incorrect arguments'.format(obj)
-            raise ValueError(msg)
-
-        for arg_name, arg_value in ba.arguments.items():
-            param = new_params[arg_name]
-            if arg_name in partial_keywords:
-                # We set a new default value, because the following code
-                # is correct:
-                #
-                #   >>> def foo(a): print(a)
-                #   >>> print(partial(partial(foo, a=10), a=20)())
-                #   20
-                #   >>> print(partial(partial(foo, a=10), a=20)(a=30))
-                #   30
-                #
-                # So, with 'partial' objects, passing a keyword argument is
-                # like setting a new default value for the corresponding
-                # parameter
-                #
-                # We also mark this parameter with '_partial_kwarg'
-                # flag.  Later, in '_bind', the 'default' value of this
-                # parameter will be added to 'kwargs', to simulate
-                # the 'functools.partial' real call.
-                new_params[arg_name] = param.replace(default=arg_value,
-                                                     _partial_kwarg=True)
-
-            elif (param.kind not in (_VAR_KEYWORD, _VAR_POSITIONAL)
-                  and not param._partial_kwarg):
-                new_params.pop(arg_name)
-
-        return sig.replace(parameters=new_params.values())
-
-    sig = None
-    if isinstance(obj, type):
-        # obj is a class or a metaclass
-
-        # First, let's see if it has an overloaded __call__ defined
-        # in its metaclass
-        call = _get_user_defined_method(type(obj), '__call__')
-        if call is not None:
-            sig = signature(call)
-        else:
-            # Now we check if the 'obj' class has a '__new__' method
-            new = _get_user_defined_method(obj, '__new__')
-            if new is not None:
-                sig = signature(new)
-            else:
-                # Finally, we should have at least __init__ implemented
-                init = _get_user_defined_method(obj, '__init__')
-                if init is not None:
-                    sig = signature(init)
-    elif not isinstance(obj, _NonUserDefinedCallables):
-        # An object with __call__
-        # We also check that the 'obj' is not an instance of
-        # _WrapperDescriptor or _MethodWrapper to avoid
-        # infinite recursion (and even potential segfault)
-        call = _get_user_defined_method(type(obj), '__call__', 'im_func')
-        if call is not None:
-            sig = signature(call)
-
-    if sig is not None:
-        # For classes and objects we skip the first parameter of their
-        # __call__, __new__, or __init__ methods
-        return sig.replace(parameters=tuple(sig.parameters.values())[1:])
-
-    if isinstance(obj, types.BuiltinFunctionType):
-        # Raise a nicer error message for builtins
-        msg = 'no signature found for builtin function {0!r}'.format(obj)
-        raise ValueError(msg)
-
-    raise ValueError(
-        'callable {0!r} is not supported by signature'.format(obj))
-
-
-class _void(object):
-    '''A private marker - used in Parameter & Signature'''
-
-
-class _empty(object):
-    pass
-
-
-class _ParameterKind(int):
-    def __new__(self, *args, **kwargs):
-        obj = int.__new__(self, *args)
-        obj._name = kwargs['name']
-        return obj
-
-    def __str__(self):
-        return self._name
-
-    def __repr__(self):
-        return '<_ParameterKind: {0!r}>'.format(self._name)
-
-
-_POSITIONAL_ONLY = _ParameterKind(0, name='POSITIONAL_ONLY')
-_POSITIONAL_OR_KEYWORD = _ParameterKind(1, name='POSITIONAL_OR_KEYWORD')
-_VAR_POSITIONAL = _ParameterKind(2, name='VAR_POSITIONAL')
-_KEYWORD_ONLY = _ParameterKind(3, name='KEYWORD_ONLY')
-_VAR_KEYWORD = _ParameterKind(4, name='VAR_KEYWORD')
-
-
-class Parameter(object):
-    '''Represents a parameter in a function signature.
-
-    Has the following public attributes:
-
-    * name : str
-        The name of the parameter as a string.
-    * default : object
-        The default value for the parameter if specified.  If the
-        parameter has no default value, this attribute is not set.
-    * annotation
-        The annotation for the parameter if specified.  If the
-        parameter has no annotation, this attribute is not set.
-    * kind : str
-        Describes how argument values are bound to the parameter.
-        Possible values: `Parameter.POSITIONAL_ONLY`,
-        `Parameter.POSITIONAL_OR_KEYWORD`, `Parameter.VAR_POSITIONAL`,
-        `Parameter.KEYWORD_ONLY`, `Parameter.VAR_KEYWORD`.
-    '''
-
-    __slots__ = ('_name', '_kind', '_default', '_annotation', '_partial_kwarg')
-
-    POSITIONAL_ONLY = _POSITIONAL_ONLY
-    POSITIONAL_OR_KEYWORD = _POSITIONAL_OR_KEYWORD
-    VAR_POSITIONAL = _VAR_POSITIONAL
-    KEYWORD_ONLY = _KEYWORD_ONLY
-    VAR_KEYWORD = _VAR_KEYWORD
-
-    empty = _empty
-
-    def __init__(self, name, kind, default=_empty, annotation=_empty,
-                 _partial_kwarg=False):
-
-        if kind not in (_POSITIONAL_ONLY, _POSITIONAL_OR_KEYWORD,
-                        _VAR_POSITIONAL, _KEYWORD_ONLY, _VAR_KEYWORD):
-            raise ValueError("invalid value for 'Parameter.kind' attribute")
-        self._kind = kind
-
-        if default is not _empty:
-            if kind in (_VAR_POSITIONAL, _VAR_KEYWORD):
-                msg = '{0} parameters cannot have default values'.format(kind)
-                raise ValueError(msg)
-        self._default = default
-        self._annotation = annotation
-
-        if name is None:
-            if kind != _POSITIONAL_ONLY:
-                raise ValueError("None is not a valid name for a "
-                                 "non-positional-only parameter")
-            self._name = name
-        else:
-            name = str(name)
-            if kind != _POSITIONAL_ONLY and not re.match(
-                    r'[a-z_]\w*$', name, re.I):
-                msg = '{0!r} is not a valid parameter name'.format(name)
-                raise ValueError(msg)
-            self._name = name
-
-        self._partial_kwarg = _partial_kwarg
-
-    @property
-    def name(self):
-        return self._name
-
-    @property
-    def default(self):
-        return self._default
-
-    @property
-    def annotation(self):
-        return self._annotation
-
-    @property
-    def kind(self):
-        return self._kind
-
-    def replace(self, name=_void, kind=_void, annotation=_void,
-                default=_void, _partial_kwarg=_void):
-        '''Creates a customized copy of the Parameter.'''
-
-        if name is _void:
-            name = self._name
-
-        if kind is _void:
-            kind = self._kind
-
-        if annotation is _void:
-            annotation = self._annotation
-
-        if default is _void:
-            default = self._default
-
-        if _partial_kwarg is _void:
-            _partial_kwarg = self._partial_kwarg
-
-        return type(self)(name, kind, default=default, annotation=annotation,
-                          _partial_kwarg=_partial_kwarg)
-
-    def __str__(self):
-        kind = self.kind
-
-        formatted = self._name
-        if kind == _POSITIONAL_ONLY:
-            if formatted is None:
-                formatted = ''
-            formatted = '<{0}>'.format(formatted)
-
-        # Add annotation and default value
-        if self._annotation is not _empty:
-            formatted = '{0}:{1}'.format(formatted,
-                                         formatannotation(self._annotation))
-
-        if self._default is not _empty:
-            formatted = '{0}={1}'.format(formatted, repr(self._default))
-
-        if kind == _VAR_POSITIONAL:
-            formatted = '*' + formatted
-        elif kind == _VAR_KEYWORD:
-            formatted = '**' + formatted
-
-        return formatted
-
-    def __repr__(self):
-        return '<{0} at {1:#x} {2!r}>'.format(self.__class__.__name__,
-                                              id(self), self.name)
-
-    def __hash__(self):
-        msg = "unhashable type: '{0}'".format(self.__class__.__name__)
-        raise TypeError(msg)
-
-    def __eq__(self, other):
-        return (issubclass(other.__class__, Parameter)
-                and self._name == other._name
-                and self._kind == other._kind
-                and self._default == other._default
-                and self._annotation == other._annotation)
-
-    def __ne__(self, other):
-        return not self.__eq__(other)
-
-
-class BoundArguments(object):
-    '''Result of `Signature.bind` call.  Holds the mapping of arguments
-    to the function's parameters.
-
-    Has the following public attributes:
-
-    * arguments : OrderedDict
-        An ordered mutable mapping of parameters' names to arguments' values.
-        Does not contain arguments' default values.
-    * signature : Signature
-        The Signature object that created this instance.
-    * args : tuple
-        Tuple of positional arguments values.
-    * kwargs : dict
-        Dict of keyword arguments values.
-    '''
-
-    def __init__(self, signature, arguments):
-        self.arguments = arguments
-        self._signature = signature
-
-    @property
-    def signature(self):
-        return self._signature
-
-    @property
-    def args(self):
-        args = []
-        for param_name, param in self._signature.parameters.items():
-            if (param.kind in (_VAR_KEYWORD, _KEYWORD_ONLY)
-                    or param._partial_kwarg):
-                # Keyword arguments mapped by 'functools.partial'
-                # (Parameter._partial_kwarg is True) are mapped
-                # in 'BoundArguments.kwargs', along with VAR_KEYWORD &
-                # KEYWORD_ONLY
-                break
-
-            try:
-                arg = self.arguments[param_name]
-            except KeyError:
-                # We're done here. Other arguments
-                # will be mapped in 'BoundArguments.kwargs'
-                break
-            else:
-                if param.kind == _VAR_POSITIONAL:
-                    # *args
-                    args.extend(arg)
-                else:
-                    # plain argument
-                    args.append(arg)
-
-        return tuple(args)
-
-    @property
-    def kwargs(self):
-        kwargs = {}
-        kwargs_started = False
-        for param_name, param in self._signature.parameters.items():
-            if not kwargs_started:
-                if (param.kind in (_VAR_KEYWORD, _KEYWORD_ONLY)
-                        or param._partial_kwarg):
-                    kwargs_started = True
-                else:
-                    if param_name not in self.arguments:
-                        kwargs_started = True
-                        continue
-
-            if not kwargs_started:
-                continue
-
-            try:
-                arg = self.arguments[param_name]
-            except KeyError:
-                pass
-            else:
-                if param.kind == _VAR_KEYWORD:
-                    # **kwargs
-                    kwargs.update(arg)
-                else:
-                    # plain keyword argument
-                    kwargs[param_name] = arg
-
-        return kwargs
-
-    def __hash__(self):
-        msg = "unhashable type: '{0}'".format(self.__class__.__name__)
-        raise TypeError(msg)
-
-    def __eq__(self, other):
-        return (issubclass(other.__class__, BoundArguments)
-                and self.signature == other.signature
-                and self.arguments == other.arguments)
-
-    def __ne__(self, other):
-        return not self.__eq__(other)
-
-
-class Signature(object):
-    '''A Signature object represents the overall signature of a function.
-    It stores a Parameter object for each parameter accepted by the
-    function, as well as information specific to the function itself.
-
-    A Signature object has the following public attributes and methods:
-
-    * parameters : OrderedDict
-        An ordered mapping of parameters' names to the corresponding
-        Parameter objects (keyword-only arguments are in the same order
-        as listed in `code.co_varnames`).
-    * return_annotation : object
-        The annotation for the return type of the function if specified.
-        If the function has no annotation for its return type, this
-        attribute is not set.
-    * bind(*args, **kwargs) -> BoundArguments
-        Creates a mapping from positional and keyword arguments to
-        parameters.
-    * bind_partial(*args, **kwargs) -> BoundArguments
-        Creates a partial mapping from positional and keyword arguments
-        to parameters (simulating 'functools.partial' behavior.)
-    '''
-
-    __slots__ = ('_return_annotation', '_parameters')
-
-    _parameter_cls = Parameter
-    _bound_arguments_cls = BoundArguments
-
-    empty = _empty
-
-    def __init__(self, parameters=None, return_annotation=_empty,
-                 __validate_parameters__=True):
-        '''Constructs Signature from the given list of Parameter
-        objects and 'return_annotation'.  All arguments are optional.
-        '''
-
-        if parameters is None:
-            params = OrderedDict()
-        else:
-            if __validate_parameters__:
-                params = OrderedDict()
-                top_kind = _POSITIONAL_ONLY
-
-                for idx, param in enumerate(parameters):
-                    kind = param.kind
-                    if kind < top_kind:
-                        msg = 'wrong parameter order: {0} before {1}'
-                        msg = msg.format(top_kind, param.kind)
-                        raise ValueError(msg)
-                    else:
-                        top_kind = kind
-
-                    name = param.name
-                    if name is None:
-                        name = str(idx)
-                        param = param.replace(name=name)
-
-                    if name in params:
-                        msg = 'duplicate parameter name: {0!r}'.format(name)
-                        raise ValueError(msg)
-                    params[name] = param
-            else:
-                params = OrderedDict(((param.name, param)
-                                      for param in parameters))
-
-        self._parameters = params
-        self._return_annotation = return_annotation
-
-    @classmethod
-    def from_function(cls, func):
-        '''Constructs Signature for the given python function'''
-
-        if not isinstance(func, types.FunctionType):
-            raise TypeError('{0!r} is not a Python function'.format(func))
-
-        Parameter = cls._parameter_cls
-
-        # Parameter information.
-        func_code = func.__code__
-        pos_count = func_code.co_argcount
-        arg_names = func_code.co_varnames
-        positional = tuple(arg_names[:pos_count])
-        keyword_only_count = getattr(func_code, 'co_kwonlyargcount', 0)
-        keyword_only = arg_names[pos_count:(pos_count + keyword_only_count)]
-        annotations = getattr(func, '__annotations__', {})
-        defaults = func.__defaults__
-        kwdefaults = getattr(func, '__kwdefaults__', None)
-
-        if defaults:
-            pos_default_count = len(defaults)
-        else:
-            pos_default_count = 0
-
-        parameters = []
-
-        # Non-keyword-only parameters w/o defaults.
-        non_default_count = pos_count - pos_default_count
-        for name in positional[:non_default_count]:
-            annotation = annotations.get(name, _empty)
-            parameters.append(Parameter(name, annotation=annotation,
-                                        kind=_POSITIONAL_OR_KEYWORD))
-
-        # ... w/ defaults.
-        for offset, name in enumerate(positional[non_default_count:]):
-            annotation = annotations.get(name, _empty)
-            parameters.append(Parameter(name, annotation=annotation,
-                                        kind=_POSITIONAL_OR_KEYWORD,
-                                        default=defaults[offset]))
-
-        # *args
-        if func_code.co_flags & 0x04:
-            name = arg_names[pos_count + keyword_only_count]
-            annotation = annotations.get(name, _empty)
-            parameters.append(Parameter(name, annotation=annotation,
-                                        kind=_VAR_POSITIONAL))
-
-        # Keyword-only parameters.
-        for name in keyword_only:
-            default = _empty
-            if kwdefaults is not None:
-                default = kwdefaults.get(name, _empty)
-
-            annotation = annotations.get(name, _empty)
-            parameters.append(Parameter(name, annotation=annotation,
-                                        kind=_KEYWORD_ONLY,
-                                        default=default))
-        # **kwargs
-        if func_code.co_flags & 0x08:
-            index = pos_count + keyword_only_count
-            if func_code.co_flags & 0x04:
-                index += 1
-
-            name = arg_names[index]
-            annotation = annotations.get(name, _empty)
-            parameters.append(Parameter(name, annotation=annotation,
-                                        kind=_VAR_KEYWORD))
-
-        return cls(parameters,
-                   return_annotation=annotations.get('return', _empty),
-                   __validate_parameters__=False)
-
-    @property
-    def parameters(self):
-        try:
-            return types.MappingProxyType(self._parameters)
-        except AttributeError:
-            return OrderedDict(self._parameters.items())
-
-    @property
-    def return_annotation(self):
-        return self._return_annotation
-
-    def replace(self, parameters=_void, return_annotation=_void):
-        '''Creates a customized copy of the Signature.
-        Pass 'parameters' and/or 'return_annotation' arguments
-        to override them in the new copy.
-        '''
-
-        if parameters is _void:
-            parameters = self.parameters.values()
-
-        if return_annotation is _void:
-            return_annotation = self._return_annotation
-
-        return type(self)(parameters,
-                          return_annotation=return_annotation)
-
-    def __hash__(self):
-        msg = "unhashable type: '{0}'".format(self.__class__.__name__)
-        raise TypeError(msg)
-
-    def __eq__(self, other):
-        if (not issubclass(type(other), Signature)
-            or self.return_annotation != other.return_annotation
-                or len(self.parameters) != len(other.parameters)):
-            return False
-
-        other_positions = dict((param, idx)
-                               for idx, param in enumerate(other.parameters.keys()))
-
-        for idx, (param_name, param) in enumerate(self.parameters.items()):
-            if param.kind == _KEYWORD_ONLY:
-                try:
-                    other_param = other.parameters[param_name]
-                except KeyError:
-                    return False
-                else:
-                    if param != other_param:
-                        return False
-            else:
-                try:
-                    other_idx = other_positions[param_name]
-                except KeyError:
-                    return False
-                else:
-                    if (idx != other_idx
-                            or param != other.parameters[param_name]):
-                        return False
-
-        return True
-
-    def __ne__(self, other):
-        return not self.__eq__(other)
-
-    def _bind(self, args, kwargs, partial=False):
-        '''Private method.  Don't use directly.'''
-
-        arguments = OrderedDict()
-
-        parameters = iter(self.parameters.values())
-        parameters_ex = ()
-        arg_vals = iter(args)
-
-        if partial:
-            # Support for binding arguments to 'functools.partial' objects.
-            # See 'functools.partial' case in 'signature()' implementation
-            # for details.
-            for param_name, param in self.parameters.items():
-                if (param._partial_kwarg and param_name not in kwargs):
-                    # Simulating 'functools.partial' behavior
-                    kwargs[param_name] = param.default
-
-        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:
-                            msg = '{arg!r} parameter is positional only, ' \
-                                  'but was passed as a keyword'
-                            msg = msg.format(arg=param.name)
-                            raise TypeError(msg)
-                        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:
-                        if partial:
-                            parameters_ex = (param,)
-                            break
-                        else:
-                            msg = '{arg!r} parameter lacking default value'
-                            msg = msg.format(arg=param.name)
-                            raise TypeError(msg)
-            else:
-                # We have a positional argument to process
-                try:
-                    param = next(parameters)
-                except StopIteration:
-                    raise TypeError('too many positional arguments')
-                else:
-                    if param.kind in (_VAR_KEYWORD, _KEYWORD_ONLY):
-                        # Looks like we have no parameter for this positional
-                        # argument
-                        raise TypeError('too many positional arguments')
-
-                    if param.kind == _VAR_POSITIONAL:
-                        # We have an '*args'-like argument, let's fill it with
-                        # all positional arguments we have left and move on to
-                        # the next phase
-                        values = [arg_val]
-                        values.extend(arg_vals)
-                        arguments[param.name] = tuple(values)
-                        break
-
-                    if param.name in kwargs:
-                        raise TypeError('multiple values for argument '
-                                        '{arg!r}'.format(arg=param.name))
-
-                    arguments[param.name] = arg_val
-
-        # Now, we iterate through the remaining parameters to process
-        # keyword arguments
-        kwargs_param = None
-        for param in itertools.chain(parameters_ex, parameters):
-            if param.kind == _POSITIONAL_ONLY:
-                # This should never happen in case of a properly built
-                # Signature object (but let's have this check here
-                # to ensure correct behaviour just in case)
-                raise TypeError('{arg!r} parameter is positional only, '
-                                'but was passed as a keyword'.
-                                format(arg=param.name))
-
-            if param.kind == _VAR_KEYWORD:
-                # Memorize that we have a '**kwargs'-like parameter
-                kwargs_param = param
-                continue
-
-            param_name = param.name
-            try:
-                arg_val = kwargs.pop(param_name)
-            except KeyError:
-                # We have no value for this parameter.  It's fine though,
-                # if it has a default value, or it is an '*args'-like
-                # parameter, left alone by the processing of positional
-                # arguments.
-                if (not partial and param.kind != _VAR_POSITIONAL
-                        and param.default is _empty):
-                    raise TypeError('{arg!r} parameter lacking default value'.
-                                    format(arg=param_name))
-
-            else:
-                arguments[param_name] = arg_val
-
-        if kwargs:
-            if kwargs_param is not None:
-                # Process our '**kwargs'-like parameter
-                arguments[kwargs_param.name] = kwargs
-            else:
-                raise TypeError('too many keyword arguments')
-
-        return self._bound_arguments_cls(self, arguments)
-
-    def bind(self, *args, **kwargs):
-        '''Get a BoundArguments object, that maps the passed `args`
-        and `kwargs` to the function's signature.  Raises `TypeError`
-        if the passed arguments can not be bound.
-        '''
-        return self._bind(args, kwargs)
-
-    def bind_partial(self, *args, **kwargs):
-        '''Get a BoundArguments object, that partially maps the
-        passed `args` and `kwargs` to the function's signature.
-        Raises `TypeError` if the passed arguments can not be bound.
-        '''
-        return self._bind(args, kwargs, partial=True)
-
-    def __str__(self):
-        result = []
-        render_kw_only_separator = True
-        for idx, param in enumerate(self.parameters.values()):
-            formatted = str(param)
-
-            kind = param.kind
-            if kind == _VAR_POSITIONAL:
-                # OK, we have an '*args'-like parameter, so we won't need
-                # a '*' to separate keyword-only arguments
-                render_kw_only_separator = False
-            elif kind == _KEYWORD_ONLY and render_kw_only_separator:
-                # We have a keyword-only parameter to render and we haven't
-                # rendered an '*args'-like parameter before, so add a '*'
-                # separator to the parameters list ("foo(arg1, *, arg2)" case)
-                result.append('*')
-                # This condition should be only triggered once, so
-                # reset the flag
-                render_kw_only_separator = False
-
-            result.append(formatted)
-
-        rendered = '({0})'.format(', '.join(result))
-
-        if self.return_annotation is not _empty:
-            anno = formatannotation(self.return_annotation)
-            rendered += ' -> {0}'.format(anno)
-
-        return rendered