Coverage for /usr/local/lib/python3.12/site-packages/prefect/utilities/callables.py: 23%
293 statements
« prev ^ index » next coverage.py v7.10.6, created at 2025-12-05 11:21 +0000
1"""
2Utilities for working with Python callables.
3"""
5import ast 1a
6import importlib.util 1a
7import inspect 1a
8import warnings 1a
9from collections import OrderedDict 1a
10from collections.abc import Iterable 1a
11from functools import partial 1a
12from logging import Logger 1a
13from pathlib import Path 1a
14from typing import Any, Callable, Optional, Union, cast 1a
16import cloudpickle # type: ignore # no stubs available 1a
17import pydantic 1a
18from griffe import Docstring, DocstringSectionKind, Parser, parse 1a
19from typing_extensions import Literal, TypeVar 1a
21from prefect._internal.pydantic.v1_schema import has_v1_type_as_param 1a
22from prefect._internal.pydantic.v2_schema import ( 1a
23 create_v2_schema,
24 process_v2_params,
25)
26from prefect.exceptions import ( 1a
27 MappingLengthMismatch,
28 MappingMissingIterable,
29 ParameterBindError,
30 ReservedArgumentError,
31 SignatureMismatchError,
32)
33from prefect.logging.loggers import disable_logger, get_logger 1a
34from prefect.utilities.annotations import allow_failure, quote, unmapped 1a
35from prefect.utilities.collections import isiterable 1a
36from prefect.utilities.importtools import safe_load_namespace 1a
38logger: Logger = get_logger(__name__) 1a
40R = TypeVar("R", infer_variance=True) 1a
43def get_call_parameters( 1a
44 fn: Callable[..., Any],
45 call_args: tuple[Any, ...],
46 call_kwargs: dict[str, Any],
47 apply_defaults: bool = True,
48) -> dict[str, Any]:
49 """
50 Bind a call to a function to get parameter/value mapping. Default values on
51 the signature will be included if not overridden.
53 If the function has a `__prefect_self__` attribute, it will be included as
54 the first parameter. This attribute is set when Prefect decorates a bound
55 method, so this approach allows Prefect to work with bound methods in a way
56 that is consistent with how Python handles them (i.e. users don't have to
57 pass the instance argument to the method) while still making the implicit self
58 argument visible to all of Prefect's parameter machinery (such as cache key
59 functions).
61 Raises a ParameterBindError if the arguments/kwargs are not valid for the
62 function
63 """
64 if hasattr(fn, "__prefect_self__"):
65 call_args = (getattr(fn, "__prefect_self__"), *call_args)
66 elif hasattr(fn, "__prefect_cls__"):
67 call_args = (getattr(fn, "__prefect_cls__"), *call_args)
69 try:
70 bound_signature = inspect.signature(fn).bind(*call_args, **call_kwargs)
71 except TypeError as exc:
72 raise ParameterBindError.from_bind_failure(fn, exc, call_args, call_kwargs)
74 if apply_defaults:
75 bound_signature.apply_defaults()
77 # We cast from `OrderedDict` to `dict` because Dask will not convert futures in an
78 # ordered dictionary to values during execution; this is the default behavior in
79 # Python 3.9 anyway.
80 return dict(bound_signature.arguments)
83def get_parameter_defaults( 1a
84 fn: Callable[..., Any],
85) -> dict[str, Any]:
86 """
87 Get default parameter values for a callable.
88 """
89 signature = inspect.signature(fn)
91 parameter_defaults: dict[str, Any] = {}
93 for name, param in signature.parameters.items():
94 if param.default is not signature.empty:
95 parameter_defaults[name] = param.default
97 return parameter_defaults
100def explode_variadic_parameter( 1a
101 fn: Callable[..., Any], parameters: dict[str, Any]
102) -> dict[str, Any]:
103 """
104 Given a parameter dictionary, move any parameters stored in a variadic keyword
105 argument parameter (i.e. **kwargs) into the top level.
107 Example:
109 ```python
110 def foo(a, b, **kwargs):
111 pass
113 parameters = {"a": 1, "b": 2, "kwargs": {"c": 3, "d": 4}}
114 explode_variadic_parameter(foo, parameters)
115 # {"a": 1, "b": 2, "c": 3, "d": 4}
116 ```
117 """
118 variadic_key = None
119 for key, parameter in inspect.signature(fn).parameters.items():
120 if parameter.kind == parameter.VAR_KEYWORD:
121 variadic_key = key
122 break
124 if not variadic_key:
125 return parameters
127 new_parameters = parameters.copy()
128 for key, value in new_parameters.pop(variadic_key, {}).items():
129 new_parameters[key] = value
131 return new_parameters
134def collapse_variadic_parameters( 1a
135 fn: Callable[..., Any], parameters: dict[str, Any]
136) -> dict[str, Any]:
137 """
138 Given a parameter dictionary, move any parameters stored not present in the
139 signature into the variadic keyword argument.
141 Example:
143 ```python
144 def foo(a, b, **kwargs):
145 pass
147 parameters = {"a": 1, "b": 2, "c": 3, "d": 4}
148 collapse_variadic_parameters(foo, parameters)
149 # {"a": 1, "b": 2, "kwargs": {"c": 3, "d": 4}}
150 ```
151 """
152 signature_parameters = inspect.signature(fn).parameters
153 variadic_key = None
154 for key, parameter in signature_parameters.items():
155 if parameter.kind == parameter.VAR_KEYWORD:
156 variadic_key = key
157 break
159 missing_parameters = set(parameters.keys()) - set(signature_parameters.keys())
161 if not missing_parameters:
162 # no missing parameters, return parameters unchanged
163 return parameters
165 if not variadic_key:
166 raise ValueError(
167 f"Signature for {fn} does not include any variadic keyword argument "
168 "but parameters were given that are not present in the signature."
169 )
171 new_parameters = parameters.copy()
172 new_parameters[variadic_key] = {
173 key: new_parameters.pop(key) for key in missing_parameters
174 }
175 return new_parameters
178def parameters_to_args_kwargs( 1a
179 fn: Callable[..., Any],
180 parameters: dict[str, Any],
181) -> tuple[tuple[Any, ...], dict[str, Any]]:
182 """
183 Convert a `parameters` dictionary to positional and keyword arguments
185 The function _must_ have an identical signature to the original function or this
186 will return an empty tuple and dict.
187 """
188 function_params = inspect.signature(fn).parameters.keys()
189 # Check for parameters that are not present in the function signature
190 unknown_params = parameters.keys() - function_params
191 if unknown_params:
192 raise SignatureMismatchError.from_bad_params(
193 list(function_params), list(parameters)
194 )
195 bound_signature = inspect.signature(fn).bind_partial()
196 bound_signature.arguments = OrderedDict(parameters)
198 return bound_signature.args, bound_signature.kwargs
201def call_with_parameters(fn: Callable[..., R], parameters: dict[str, Any]) -> R: 1a
202 """
203 Call a function with parameters extracted with `get_call_parameters`
205 The function _must_ have an identical signature to the original function or this
206 will fail. If you need to send to a function with a different signature, extract
207 the args/kwargs using `parameters_to_positional_and_keyword` directly
208 """
209 args, kwargs = parameters_to_args_kwargs(fn, parameters)
210 return fn(*args, **kwargs)
213def cloudpickle_wrapped_call( 1a
214 __fn: Callable[..., Any], *args: Any, **kwargs: Any
215) -> Callable[[], bytes]:
216 """
217 Serializes a function call using cloudpickle then returns a callable which will
218 execute that call and return a cloudpickle serialized return value
220 This is particularly useful for sending calls to libraries that only use the Python
221 built-in pickler (e.g. `anyio.to_process` and `multiprocessing`) but may require
222 a wider range of pickling support.
223 """
224 payload = cloudpickle.dumps((__fn, args, kwargs)) # type: ignore # no stubs available
225 return partial(_run_serialized_call, payload)
228def _run_serialized_call(payload: bytes) -> bytes: 1a
229 """
230 Defined at the top-level so it can be pickled by the Python pickler.
231 Used by `cloudpickle_wrapped_call`.
232 """
233 fn, args, kwargs = cloudpickle.loads(payload)
234 retval = fn(*args, **kwargs)
235 return cloudpickle.dumps(retval) # type: ignore # no stubs available
238class ParameterSchema(pydantic.BaseModel): 1a
239 """Simple data model corresponding to an OpenAPI `Schema`."""
241 title: Literal["Parameters"] = "Parameters" 1a
242 type: Literal["object"] = "object" 1a
243 properties: dict[str, Any] = pydantic.Field(default_factory=dict) 1a
244 required: list[str] = pydantic.Field(default_factory=list) 1a
245 definitions: dict[str, Any] = pydantic.Field(default_factory=dict) 1a
247 def model_dump_for_openapi(self) -> dict[str, Any]: 1a
248 result = self.model_dump(mode="python", exclude_none=True)
249 if "required" in result and not result["required"]:
250 del result["required"]
251 return result
254def parameter_docstrings(docstring: Optional[str]) -> dict[str, str]: 1a
255 """
256 Given a docstring in Google docstring format, parse the parameter section
257 and return a dictionary that maps parameter names to docstring.
259 Args:
260 docstring: The function's docstring.
262 Returns:
263 Mapping from parameter names to docstrings.
264 """
265 param_docstrings: dict[str, str] = {} 1a
267 if not docstring: 267 ↛ 268line 267 didn't jump to line 268 because the condition on line 267 was never true1a
268 return param_docstrings
270 with disable_logger("griffe"): 1a
271 parsed = parse(Docstring(docstring), Parser.google) 1a
272 for section in parsed: 1a
273 if section.kind != DocstringSectionKind.parameters: 1a
274 continue 1a
275 param_docstrings = { 1a
276 parameter.name: parameter.description for parameter in section.value
277 }
279 return param_docstrings 1a
282def process_v1_params( 1a
283 param: inspect.Parameter,
284 *,
285 position: int,
286 docstrings: dict[str, str],
287 aliases: dict[str, str],
288) -> tuple[str, Any, Any]:
289 import pydantic.v1 as pydantic_v1
291 # Pydantic model creation will fail if names collide with the BaseModel type
292 if hasattr(pydantic_v1.BaseModel, param.name):
293 name = param.name + "__"
294 aliases[name] = param.name
295 else:
296 name = param.name
298 type_ = Any if param.annotation is inspect.Parameter.empty else param.annotation
300 with warnings.catch_warnings():
301 # Note: pydantic.v1 doesn't have the warnings module, so we can't suppress them
302 warnings.filterwarnings("ignore", category=DeprecationWarning)
303 field: Any = pydantic_v1.Field(
304 default=... if param.default is param.empty else param.default,
305 title=param.name,
306 description=docstrings.get(param.name, None),
307 alias=aliases.get(name),
308 position=position,
309 )
310 return name, type_, field
313def create_v1_schema( 1a
314 name_: str, model_cfg: type[Any], model_fields: Optional[dict[str, Any]] = None
315) -> dict[str, Any]:
316 import pydantic.v1 as pydantic_v1
318 with warnings.catch_warnings():
319 # Note: pydantic.v1 doesn't have the warnings module, so we can't suppress them
320 warnings.filterwarnings("ignore", category=DeprecationWarning)
322 model_fields = model_fields or {}
323 model: type[pydantic_v1.BaseModel] = pydantic_v1.create_model(
324 name_,
325 __config__=model_cfg,
326 **model_fields,
327 )
328 return model.schema(by_alias=True)
331def parameter_schema(fn: Callable[..., Any]) -> ParameterSchema: 1a
332 """Given a function, generates an OpenAPI-compatible description
333 of the function's arguments, including:
334 - name
335 - typing information
336 - whether it is required
337 - a default value
338 - additional constraints (like possible enum values)
340 Args:
341 fn (Callable): The function whose arguments will be serialized
343 Returns:
344 ParameterSchema: the argument schema
345 """
346 try: 1a
347 signature = inspect.signature(fn, eval_str=True) # novm 1a
348 except (NameError, TypeError):
349 # `eval_str` is not available in Python < 3.10
350 signature = inspect.signature(fn)
352 docstrings = parameter_docstrings(inspect.getdoc(fn)) 1a
354 return generate_parameter_schema(signature, docstrings) 1a
357def parameter_schema_from_entrypoint(entrypoint: str) -> ParameterSchema: 1a
358 """
359 Generate a parameter schema from an entrypoint string.
361 Will load the source code of the function and extract the signature and docstring
362 to generate the schema.
364 Useful for generating a schema for a function when instantiating the function may
365 not be possible due to missing imports or other issues.
367 Args:
368 entrypoint: A string representing the entrypoint to a function. The string
369 should be in the format of `module.path.to.function:do_stuff`.
371 Returns:
372 ParameterSchema: The parameter schema for the function.
373 """
374 filepath = None
375 if ":" in entrypoint:
376 # split by the last colon once to handle Windows paths with drive letters i.e C:\path\to\file.py:do_stuff
377 path, func_name = entrypoint.rsplit(":", maxsplit=1)
378 source_code = Path(path).read_text()
379 filepath = path
380 else:
381 path, func_name = entrypoint.rsplit(".", maxsplit=1)
382 spec = importlib.util.find_spec(path)
383 if not spec or not spec.origin:
384 raise ValueError(f"Could not find module {path!r}")
385 source_code = Path(spec.origin).read_text()
386 signature = _generate_signature_from_source(source_code, func_name, filepath)
387 docstring = _get_docstring_from_source(source_code, func_name)
388 return generate_parameter_schema(signature, parameter_docstrings(docstring))
391def generate_parameter_schema( 1a
392 signature: inspect.Signature, docstrings: dict[str, str]
393) -> ParameterSchema:
394 """
395 Generate a parameter schema from a function signature and docstrings.
397 To get a signature from a function, use `inspect.signature(fn)` or
398 `_generate_signature_from_source(source_code, func_name)`.
400 Args:
401 signature: The function signature.
402 docstrings: A dictionary mapping parameter names to docstrings.
404 Returns:
405 ParameterSchema: The parameter schema.
406 """
408 model_fields: dict[str, Any] = {} 1a
409 aliases: dict[str, str] = {} 1a
411 if not has_v1_type_as_param(signature): 411 ↛ 419line 411 didn't jump to line 419 because the condition on line 411 was always true1a
412 config = pydantic.ConfigDict(arbitrary_types_allowed=True) 1a
414 create_schema = partial(create_v2_schema, model_cfg=config) 1a
415 process_params = process_v2_params 1a
417 else:
419 class ModelConfig:
420 arbitrary_types_allowed = True
422 create_schema = partial(create_v1_schema, model_cfg=ModelConfig)
423 process_params = process_v1_params
425 for position, param in enumerate(signature.parameters.values()): 1a
426 name, type_, field = process_params( 1a
427 param, position=position, docstrings=docstrings, aliases=aliases
428 )
430 if name in ("cls", "self"): 430 ↛ 431line 430 didn't jump to line 431 because the condition on line 430 was never true1a
431 continue # Exclude 'cls'/'self' as they're implicitly passed and not real flow parameters
433 # Generate a Pydantic model at each step so we can check if this parameter
434 # type supports schema generation
435 try: 1a
436 create_schema("CheckParameter", model_fields={name: (type_, field)}) 1a
437 except (ValueError, TypeError):
438 # This field's type is not valid for schema creation, update it to `Any`
439 type_ = Any
440 model_fields[name] = (type_, field) 1a
442 # Generate the final model and schema
443 schema = create_schema("Parameters", model_fields=model_fields) 1a
444 return ParameterSchema(**schema) 1a
447def raise_for_reserved_arguments( 1a
448 fn: Callable[..., Any], reserved_arguments: Iterable[str]
449) -> None:
450 """Raise a ReservedArgumentError if `fn` has any parameters that conflict
451 with the names contained in `reserved_arguments`."""
452 function_parameters = inspect.signature(fn).parameters 1ab
454 for argument in reserved_arguments: 1ab
455 if argument in function_parameters: 455 ↛ 456line 455 didn't jump to line 456 because the condition on line 455 was never true1ab
456 raise ReservedArgumentError(
457 f"{argument!r} is a reserved argument name and cannot be used."
458 )
461def _generate_signature_from_source( 1a
462 source_code: str, func_name: str, filepath: Optional[str] = None
463) -> inspect.Signature:
464 """
465 Extract the signature of a function from its source code.
467 Will ignore missing imports and exceptions while loading local class definitions.
469 Args:
470 source_code: The source code where the function named `func_name` is declared.
471 func_name: The name of the function.
473 Returns:
474 The signature of the function.
475 """
476 # Load the namespace from the source code. Missing imports and exceptions while
477 # loading local class definitions are ignored.
478 namespace = safe_load_namespace(source_code, filepath=filepath)
479 # Parse the source code into an AST
480 parsed_code = ast.parse(source_code)
482 func_def = next(
483 (
484 node
485 for node in ast.walk(parsed_code)
486 if isinstance(
487 node,
488 (
489 ast.FunctionDef,
490 ast.AsyncFunctionDef,
491 ),
492 )
493 and node.name == func_name
494 ),
495 None,
496 )
497 if func_def is None:
498 raise ValueError(f"Function {func_name} not found in source code")
499 parameters: list[inspect.Parameter] = []
501 # Handle annotations for positional only args e.g. def func(a, /, b, c)
502 for arg in func_def.args.posonlyargs:
503 name = arg.arg
504 annotation = arg.annotation
505 if annotation is not None:
506 try:
507 ann_code = compile(ast.Expression(annotation), "<string>", "eval")
508 annotation = eval(ann_code, namespace)
509 except Exception as e:
510 logger.debug("Failed to evaluate annotation for %s: %s", name, e)
511 annotation = inspect.Parameter.empty
512 else:
513 annotation = inspect.Parameter.empty
515 param = inspect.Parameter(
516 name, inspect.Parameter.POSITIONAL_ONLY, annotation=annotation
517 )
518 parameters.append(param)
520 # Determine the annotations for args e.g. def func(a: int, b: str, c: float)
521 for arg in func_def.args.args:
522 name = arg.arg
523 annotation = arg.annotation
524 if annotation is not None:
525 try:
526 # Compile and evaluate the annotation
527 ann_code = compile(ast.Expression(annotation), "<string>", "eval")
528 annotation = eval(ann_code, namespace)
529 except Exception as e:
530 # Don't raise an error if the annotation evaluation fails. Set the
531 # annotation to `inspect.Parameter.empty` instead which is equivalent to
532 # not having an annotation.
533 logger.debug("Failed to evaluate annotation for %s: %s", name, e)
534 annotation = inspect.Parameter.empty
535 else:
536 annotation = inspect.Parameter.empty
538 param = inspect.Parameter(
539 name, inspect.Parameter.POSITIONAL_OR_KEYWORD, annotation=annotation
540 )
541 parameters.append(param)
543 # Handle default values for args e.g. def func(a=1, b="hello", c=3.14)
544 defaults = [None] * (
545 len(func_def.args.args) - len(func_def.args.defaults)
546 ) + func_def.args.defaults
547 for param, default in zip(parameters, defaults):
548 if default is not None:
549 try:
550 def_code = compile(ast.Expression(default), "<string>", "eval")
551 default = eval(def_code, namespace)
552 except Exception as e:
553 logger.debug(
554 "Failed to evaluate default value for %s: %s", param.name, e
555 )
556 default = None # Set to None if evaluation fails
557 parameters[parameters.index(param)] = param.replace(default=default)
559 # Handle annotations for keyword only args e.g. def func(*, a: int, b: str)
560 for kwarg in func_def.args.kwonlyargs:
561 name = kwarg.arg
562 annotation = kwarg.annotation
563 if annotation is not None:
564 try:
565 ann_code = compile(ast.Expression(annotation), "<string>", "eval")
566 annotation = eval(ann_code, namespace)
567 except Exception as e:
568 logger.debug("Failed to evaluate annotation for %s: %s", name, e)
569 annotation = inspect.Parameter.empty
570 else:
571 annotation = inspect.Parameter.empty
573 param = inspect.Parameter(
574 name, inspect.Parameter.KEYWORD_ONLY, annotation=annotation
575 )
576 parameters.append(param)
578 # Handle default values for keyword only args e.g. def func(*, a=1, b="hello")
579 defaults = [None] * (
580 len(func_def.args.kwonlyargs) - len(func_def.args.kw_defaults)
581 ) + func_def.args.kw_defaults
582 for param, default in zip(parameters[-len(func_def.args.kwonlyargs) :], defaults):
583 if default is not None:
584 try:
585 def_code = compile(ast.Expression(default), "<string>", "eval")
586 default = eval(def_code, namespace)
587 except Exception as e:
588 logger.debug(
589 "Failed to evaluate default value for %s: %s", param.name, e
590 )
591 default = None
592 parameters[parameters.index(param)] = param.replace(default=default)
594 # Handle annotations for varargs and kwargs e.g. def func(*args: int, **kwargs: str)
595 if func_def.args.vararg:
596 parameters.append(
597 inspect.Parameter(
598 func_def.args.vararg.arg, inspect.Parameter.VAR_POSITIONAL
599 )
600 )
601 if func_def.args.kwarg:
602 parameters.append(
603 inspect.Parameter(func_def.args.kwarg.arg, inspect.Parameter.VAR_KEYWORD)
604 )
606 # Handle return annotation e.g. def func() -> int
607 return_annotation = func_def.returns
608 if return_annotation is not None:
609 try:
610 ret_ann_code = compile(
611 ast.Expression(return_annotation), "<string>", "eval"
612 )
613 return_annotation = eval(ret_ann_code, namespace)
614 except Exception as e:
615 logger.debug("Failed to evaluate return annotation: %s", e)
616 return_annotation = inspect.Signature.empty
618 return inspect.Signature(parameters, return_annotation=return_annotation)
621def _get_docstring_from_source(source_code: str, func_name: str) -> Optional[str]: 1a
622 """
623 Extract the docstring of a function from its source code.
625 Args:
626 source_code (str): The source code of the function.
627 func_name (str): The name of the function.
629 Returns:
630 The docstring of the function. If the function has no docstring, returns None.
631 """
632 parsed_code = ast.parse(source_code)
634 func_def = next(
635 (
636 node
637 for node in ast.walk(parsed_code)
638 if isinstance(
639 node,
640 (
641 ast.FunctionDef,
642 ast.AsyncFunctionDef,
643 ),
644 )
645 and node.name == func_name
646 ),
647 None,
648 )
649 if func_def is None:
650 raise ValueError(f"Function {func_name} not found in source code")
652 if (
653 func_def.body
654 and isinstance(func_def.body[0], ast.Expr)
655 and isinstance(func_def.body[0].value, ast.Constant)
656 ):
657 return str(func_def.body[0].value.value)
658 return None
661def expand_mapping_parameters( 1a
662 func: Callable[..., Any], parameters: dict[str, Any]
663) -> list[dict[str, Any]]:
664 """
665 Generates a list of call parameters to be used for individual calls in a mapping
666 operation.
668 Args:
669 func: The function to be called
670 parameters: A dictionary of parameters with iterables to be mapped over
672 Returns:
673 list: A list of dictionaries to be used as parameters for each
674 call in the mapping operation
675 """
676 # Ensure that any parameters in kwargs are expanded before this check
677 parameters = explode_variadic_parameter(func, parameters)
679 iterable_parameters: dict[str, list[Any]] = {}
680 static_parameters: dict[str, Any] = {}
681 annotated_parameters: dict[str, Union[allow_failure[Any], quote[Any]]] = {}
682 for key, val in parameters.items():
683 if isinstance(val, (allow_failure, quote)):
684 # Unwrap annotated parameters to determine if they are iterable
685 annotated_parameters[key] = val
686 val: Any = val.unwrap()
688 if isinstance(val, unmapped):
689 static_parameters[key] = cast(unmapped[Any], val).value
690 elif isiterable(val):
691 iterable_parameters[key] = list(val)
692 else:
693 static_parameters[key] = val
695 if not iterable_parameters:
696 raise MappingMissingIterable(
697 "No iterable parameters were received. Parameters for map must "
698 f"include at least one iterable. Parameters: {parameters}"
699 )
701 iterable_parameter_lengths = {
702 key: len(val) for key, val in iterable_parameters.items()
703 }
704 lengths = set(iterable_parameter_lengths.values())
705 if len(lengths) > 1:
706 raise MappingLengthMismatch(
707 "Received iterable parameters with different lengths. Parameters for map"
708 f" must all be the same length. Got lengths: {iterable_parameter_lengths}"
709 )
711 map_length = list(lengths)[0]
713 call_parameters_list: list[dict[str, Any]] = []
714 for i in range(map_length):
715 call_parameters = {key: value[i] for key, value in iterable_parameters.items()}
716 call_parameters.update({key: value for key, value in static_parameters.items()})
718 # Add default values for parameters; these are skipped earlier since they should
719 # not be mapped over
720 for key, value in get_parameter_defaults(func).items():
721 call_parameters.setdefault(key, value)
723 # Re-apply annotations to each key again
724 for key, annotation in annotated_parameters.items():
725 call_parameters[key] = annotation.rewrap(call_parameters[key])
727 # Collapse any previously exploded kwargs
728 call_parameters_list.append(collapse_variadic_parameters(func, call_parameters))
730 return call_parameters_list