258 lines
8.3 KiB
Python
258 lines
8.3 KiB
Python
# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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"""Compilation specifications, for example, dynamic shape inputs."""
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import inspect
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import typing
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if typing.TYPE_CHECKING:
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from .core import Module as nn_module_class
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ArgSpecType = typing.Union["Int", "Tensor"]
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MethodSpecType = typing.Union["MethodSpec", dict[str, ArgSpecType]]
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ModuleSpecType = typing.Union["ModuleSpec", dict[str, MethodSpecType]]
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SpecAny = typing.Union["Object", "Int", "Tensor", "Tuple"]
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class Int: # pylint: disable=too-few-public-methods
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"""An integer input"""
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def __init__(self) -> None:
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pass
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def __repr__(self) -> str:
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return "int"
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class Tensor: # pylint: disable=too-few-public-methods
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"""A tensor input with static ndim and dtype, but can have symbolic shapes."""
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shape: list[int | str]
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dtype: str
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def __init__(self, shape: typing.Sequence[int | str], dtype: str) -> None:
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self.shape = list(shape)
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self.dtype = dtype
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def __repr__(self) -> str:
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shape = ", ".join(str(i) for i in self.shape)
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return f"Tensor([{shape}], '{self.dtype}')"
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class Object: # pylint: disable=too-few-public-methods
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"""An non-tensor opaque frontend object."""
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object_type: type
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def __init__(self, object_type: type) -> None:
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self.object_type = object_type
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def __repr__(self) -> str:
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return "object"
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class Tuple: # pylint: disable=too-few-public-methods
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"""A tuple input or a list input"""
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name: str
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elements: list[SpecAny] | tuple[SpecAny, ...]
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def __init__(
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self,
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name: str,
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elements: list[SpecAny] | tuple[SpecAny, ...],
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) -> None:
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assert isinstance(elements, tuple | list), f"Unsupported container type: {type(elements)}"
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self.name = name
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self.elements = elements
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def __repr__(self) -> str:
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return self.elements.__repr__()
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class MethodSpec:
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"""A spec for a compiled method"""
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method: typing.Callable
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arg_names: list[str]
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arg_specs: list[ArgSpecType]
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param_mode: str # "plain", "packed", "none"
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effect_mode: str # "plain", "packed", "none"
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def __init__( # pylint: disable=too-many-arguments
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self,
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method: typing.Callable,
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arg_names: list[str],
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arg_specs: list[ArgSpecType],
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param_mode: str,
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effect_mode: str,
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):
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if param_mode not in ["plain", "packed", "none"]:
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raise ValueError(f"Invalid param_mode: {param_mode}")
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if effect_mode not in ["plain", "packed", "none"]:
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raise ValueError(f"Invalid effect_mode: {effect_mode}")
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self.method = method
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self.arg_names = arg_names
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self.arg_specs = arg_specs
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self.param_mode = param_mode
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self.effect_mode = effect_mode
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def _repr(self, name: str) -> str:
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args = ", ".join(
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f"{name}: {spec}"
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for name, spec in zip(
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self.arg_names,
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self.arg_specs,
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)
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)
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return f"{name}({args})"
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def __repr__(self) -> str:
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return self._repr(name="MethodSpec")
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@staticmethod
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def from_raw(spec: MethodSpecType, method: typing.Callable) -> "MethodSpec":
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"""Create MethodSpec from raw python dictionaries.
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Examples
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--------
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.. code-block:: python
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MethodSpec.from_raw(
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spec={
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"inputs": spec.Tensor([batch_size, "seq_len"], "int32"),
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"total_seq_len": "int",
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},
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method=module.prefill,
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)
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"""
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if isinstance(spec, MethodSpec):
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return spec
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config: dict[str, typing.Any] = spec.pop("$", {}) # type: ignore[assignment]
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param_mode = config.get("param_mode", "plain")
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effect_mode = config.get("effect_mode", "plain")
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method_signature = inspect.signature(method)
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arg_names = list(method_signature.parameters.keys())
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arg_specs = []
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def _convert_arg_spec(arg_spec, arg_name):
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if arg_spec is Int or arg_spec is int:
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return Int()
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if isinstance(arg_spec, str) and arg_spec == "int":
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return Int()
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if isinstance(arg_spec, Int | Tensor | Object):
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return arg_spec
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if isinstance(arg_spec, tuple | list | Tuple):
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return Tuple(
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arg_name,
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elements=type(arg_spec)(
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[
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_convert_arg_spec(arg_spec_i, f"{arg_name}_{i}")
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for i, arg_spec_i in enumerate(arg_spec)
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]
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),
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)
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raise TypeError(f"Invalid spec for argument {arg_name}: {arg_spec}")
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for arg_name in arg_names:
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if arg_name in spec:
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arg_spec = spec[arg_name]
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arg_spec = _convert_arg_spec(arg_spec, arg_name)
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arg_specs.append(arg_spec)
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return MethodSpec(
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method,
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arg_names,
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arg_specs,
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param_mode=param_mode,
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effect_mode=effect_mode,
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)
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@staticmethod
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def from_torch(args: list[typing.Any], method: typing.Callable) -> "MethodSpec":
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"""Converts a list of torch tensors to MethodSpec."""
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from .torch import ( # pylint: disable=import-outside-toplevel
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_method_spec_from_torch,
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)
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return _method_spec_from_torch(args, method)
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class ModuleSpec:
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"""A spec for a compiled nn.Module"""
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module: "nn_module_class"
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method_names: list[str]
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method_specs: list[MethodSpec]
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def __init__(
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self,
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module: "nn_module_class",
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method_names: list[str],
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method_specs: list[MethodSpec],
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) -> None:
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self.module = module
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self.method_names = method_names
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self.method_specs = method_specs
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@staticmethod
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def from_raw(spec: ModuleSpecType, module: "nn_module_class") -> "ModuleSpec":
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"""Create ModuleSpec from raw python dictionaries.
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Examples
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--------
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.. code-block:: python
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ModuleSpec.from_raw(
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spec={
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"prefill": {
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"inputs": spec.Tensor([batch_size, "seq_len"], "int32"),
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"total_seq_len": int,
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},
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"decode": {
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"inputs": spec.Tensor([batch_size, 1], "int32"),
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"total_seq_len": int,
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},
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"softmax_with_temperature": {
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"logits": spec.Tensor([1, 1, config.vocab_size], "float32"),
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"temperature": spec.Tensor([], "float32"),
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},
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},
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module=module,
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)
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"""
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if isinstance(spec, ModuleSpec):
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return spec
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method_names = list(spec.keys())
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method_specs: list[MethodSpec] = []
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for method_name in method_names:
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method_spec = spec[method_name]
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if isinstance(method_spec, MethodSpec):
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pass
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else:
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method_spec = MethodSpec.from_raw(method_spec, getattr(module, method_name))
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method_specs.append(method_spec)
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return ModuleSpec(module, method_names, method_specs)
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def __repr__(self) -> str:
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return "ModuleSpec:\n" + "\n".join(
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" " + spec._repr(name) # pylint: disable=protected-access
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for name, spec in zip(
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self.method_names,
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self.method_specs,
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)
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)
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