"NameError: name 'FilePath' is not defined" in calling create_schema_from_function

Checked other resources

[X] I added a very descriptive title to this issue.
[X] I searched the LangChain documentation with the integrated search.
[X] I used the GitHub search to find a similar question and didn't find it.
[X] I am sure that this is a bug in LangChain rather than my code.
[X] The bug is not resolved by updating to the latest stable version of LangChain (or the specific integration package).

Example Code

The following code:

from langchain_core.tools.base import (
    create_schema_from_function as create_schema_from_function,
)

import pandas
func=pandas.read_csv
print(type(func))
print(func.__name__)
print(func.__qualname__)

model = create_schema_from_function(
    func_name,
    func,
    filter_args=(),
    parse_docstring=True,
    error_on_invalid_docstring=False,
    include_injected=False,
)

Error Message and Stack Trace (if applicable)

<class 'function'> read_csv read_csv

NameError Traceback (most recent call last) Cell In[27], line 11 8 print(func.name) 9 print(func.qualname) ---> 11 model = create_schema_from_function( 12 func_name, 13 func, 14 filter_args=(), 15 parse_docstring=True, 16 error_on_invalid_docstring=False, 17 include_injected=False, 18 )

File /lib/python3.12/site-packages/langchain_core/tools/base.py:249, in create_schema_from_function(model_name, func, filter_args, parse_docstring, error_on_invalid_docstring, include_injected) 244 with warnings.catch_warnings(): 245 # We are using deprecated functionality here. 246 # This code should be re-written to simply construct a pydantic model 247 # using inspect.signature and create_model. 248 warnings.simplefilter("ignore", category=PydanticDeprecationWarning) --> 249 validated = validate_arguments(func, config=_SchemaConfig) # type: ignore 251 # Let's ignore self and cls arguments for class and instance methods 252 # If qualified name has a ".", then it likely belongs in a class namespace 253 in_class = bool(func.qualname and "." in func.qualname)

File /lib/python3.12/site-packages/pydantic/deprecated/decorator.py:64, in validate_arguments(func, config) 61 return wrapper_function 63 if func: ---> 64 return validate(func) 65 else: 66 return validate

File /lib/python3.12/site-packages/pydantic/deprecated/decorator.py:51, in validate_arguments..validate(_func) 50 def validate(_func: 'AnyCallable') -> 'AnyCallable': ---> 51 vd = ValidatedFunction(_func, config) 53 @wraps(_func) 54 def wrapper_function(*args: Any, *kwargs: Any) -> Any: 55 return vd.call(args, **kwargs)

File /lib/python3.12/site-packages/pydantic/deprecated/decorator.py:94, in ValidatedFunction.init(self, function, config) 91 self.v_args_name = 'args' 92 self.v_kwargs_name = 'kwargs' ---> 94 type_hints = _typing_extra.get_type_hints(function, include_extras=True) 95 takes_args = False 96 takes_kwargs = False

File /lib/python312.zip/typing.py:2246, in get_type_hints(obj, globalns, localns, include_extras) 2238 if isinstance(value, str): 2239 # class-level forward refs were handled above, this must be either 2240 # a module-level annotation or a function argument annotation 2241 value = ForwardRef( 2242 value, 2243 is_argument=not isinstance(obj, types.ModuleType), 2244 is_class=False, 2245 ) -> 2246 hints[name] = _eval_type(value, globalns, localns) 2247 return hints if include_extras else {k: _strip_annotations(t) for k, t in hints.items()}

File /lib/python312.zip/typing.py:400, in _eval_type(t, globalns, localns, recursive_guard) 393 """Evaluate all forward references in the given type t. 394 395 For use of globalns and localns see the docstring for get_type_hints(). 396 recursive_guard is used to prevent infinite recursion with a recursive 397 ForwardRef. 398 """ 399 if isinstance(t, ForwardRef): --> 400 return t._evaluate(globalns, localns, recursive_guard) 401 if isinstance(t, (_GenericAlias, GenericAlias, types.UnionType)): 402 if isinstance(t, GenericAlias):

File /lib/python312.zip/typing.py:907, in ForwardRef._evaluate(self, globalns, localns, recursive_guard) 902 if self.forward_module is not None: 903 globalns = getattr( 904 sys.modules.get(self.forward_module, None), 'dict', globalns 905 ) 906 type_ = _type_check( --> 907 eval(self.forward_code__, globalns, localns), 908 "Forward references must evaluate to types.", 909 is_argument=self.forward_is_argument, 910 allow_special_forms=self.forward_is_class, 911 ) 912 self.forward_value = _evaltype( 913 type, globalns, localns, recursive_guard | {self.forward_arg} 914 ) 915 self.forward_evaluated__ = True

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