


"""simple docstring"""







import argparse
import json
from pathlib import Path

import requests
import torch
from huggingface_hub import hf_hub_download
from PIL import Image

from transformers import YolosConfig, YolosForObjectDetection, YolosImageProcessor
from transformers.utils import logging


logging.set_verbosity_info()
__lowercase    					=      logging.get_logger(__name__)


def      lowercase			(				A_       )->      YolosConfig:
  '''simple docstring'''







  a						:		Any      							=			YolosConfig()

  # size of the architecture
  if "yolos_ti" in yolos_name:
    a						:		List[str]      							=			192
    a						:		int      							=			768
    a						:		Dict      							=			12
    a						:		Any      							=			3
    a						:		List[Any]      							=			[800, 1_333]
    a						:		List[str]      							=			False
  elif yolos_name == "yolos_s_dWr":
    a						:		str      							=			330
    a						:		Optional[int]      							=			14
    a						:		Dict      							=			6
    a						:		Union[str, Any]      							=			1_320
  elif "yolos_s" in yolos_name:
    a						:		Any      							=			384
    a						:		List[Any]      							=			1_536
    a						:		Any      							=			12
    a						:		List[Any]      							=			6
  elif "yolos_b" in yolos_name:
    a						:		Dict      							=			[800, 1_344]

  a						:		Tuple      							=			91
  a						:		Union[str, Any]      							=			"huggingface/label-files"
  a						:		str      							=			"coco-detection-id2label.json"
  a						:		Union[str, Any]      							=			json.load(open(hf_hub_download(A_  ,   A_  ,   repo_type="dataset"       )  ,   "r"       )       )
  a						:		int      							=			{int(A_       ): v for k, v in idalabel.items()}
  a						:		List[Any]      							=			idalabel
  a						:		Optional[Any]      							=			{v: k for k, v in idalabel.items()}

  return config


def      lowercase			(				A_  ,   A_  ,   A_ = False       )->      Tuple:
  '''simple docstring'''







  for i in range(config.num_hidden_layers       ):
    # read in weights + bias of input projection layer (in timm, this is a single matrix + bias)
    a						:		Optional[int]      							=			state_dict.pop(F'''blocks.{i}.attn.qkv.weight'''       )
    a						:		Any      							=			state_dict.pop(F'''blocks.{i}.attn.qkv.bias'''       )
    # next, add query, keys and values (in that order) to the state dict
    a						:		Optional[Any]      							=			in_proj_weight[: config.hidden_size, :]
    a						:		Any      							=			in_proj_bias[: config.hidden_size]
    a						:		str      							=			in_proj_weight[
        config.hidden_size : config.hidden_size * 2, :
    ]
    a						:		Optional[int]      							=			in_proj_bias[
        config.hidden_size : config.hidden_size * 2
    ]
    a						:		Any      							=			in_proj_weight[-config.hidden_size :, :]
    a						:		str      							=			in_proj_bias[-config.hidden_size :]


def      lowercase			(				A_       )->      str:
  '''simple docstring'''







  if "backbone" in name:
    a						:		Any      							=			name.replace("backbone"  ,   "vit"       )
  if "cls_token" in name:
    a						:		str      							=			name.replace("cls_token"  ,   "embeddings.cls_token"       )
  if "det_token" in name:
    a						:		Union[str, Any]      							=			name.replace("det_token"  ,   "embeddings.detection_tokens"       )
  if "mid_pos_embed" in name:
    a						:		Tuple      							=			name.replace("mid_pos_embed"  ,   "encoder.mid_position_embeddings"       )
  if "pos_embed" in name:
    a						:		Optional[Any]      							=			name.replace("pos_embed"  ,   "embeddings.position_embeddings"       )
  if "patch_embed.proj" in name:
    a						:		str      							=			name.replace("patch_embed.proj"  ,   "embeddings.patch_embeddings.projection"       )
  if "blocks" in name:
    a						:		Optional[int]      							=			name.replace("blocks"  ,   "encoder.layer"       )
  if "attn.proj" in name:
    a						:		List[str]      							=			name.replace("attn.proj"  ,   "attention.output.dense"       )
  if "attn" in name:
    a						:		Optional[int]      							=			name.replace("attn"  ,   "attention.self"       )
  if "norm1" in name:
    a						:		List[Any]      							=			name.replace("norm1"  ,   "layernorm_before"       )
  if "norm2" in name:
    a						:		List[Any]      							=			name.replace("norm2"  ,   "layernorm_after"       )
  if "mlp.fc1" in name:
    a						:		int      							=			name.replace("mlp.fc1"  ,   "intermediate.dense"       )
  if "mlp.fc2" in name:
    a						:		str      							=			name.replace("mlp.fc2"  ,   "output.dense"       )
  if "class_embed" in name:
    a						:		Union[str, Any]      							=			name.replace("class_embed"  ,   "class_labels_classifier"       )
  if "bbox_embed" in name:
    a						:		int      							=			name.replace("bbox_embed"  ,   "bbox_predictor"       )
  if "vit.norm" in name:
    a						:		Union[str, Any]      							=			name.replace("vit.norm"  ,   "vit.layernorm"       )

  return name


def      lowercase			(				A_  ,   A_       )->      dict:
  '''simple docstring'''







  for key in orig_state_dict.copy().keys():
    a						:		Optional[int]      							=			orig_state_dict.pop(A_       )

    if "qkv" in key:
      a						:		Optional[Any]      							=			key.split("."       )
      a						:		List[str]      							=			int(key_split[2]       )
      a						:		int      							=			model.vit.encoder.layer[layer_num].attention.attention.all_head_size
      if "weight" in key:
        a						:		Union[str, Any]      							=			val[:dim, :]
        a						:		Union[str, Any]      							=			val[
            dim : dim * 2, :
        ]
        a						:		List[str]      							=			val[-dim:, :]
      else:
        a						:		Optional[Any]      							=			val[:dim]
        a						:		List[Any]      							=			val[dim : dim * 2]
        a						:		int      							=			val[-dim:]
    else:
      a						:		int      							=			val

  return orig_state_dict


def      lowercase			(				)->      torch.Tensor:
  '''simple docstring'''







  a						:		List[str]      							=			"http://images.cocodataset.org/val2017/000000039769.jpg"
  a						:		str      							=			Image.open(requests.get(A_  ,   stream=A_       ).raw       )
  return im


@torch.no_grad()
def      lowercase			(				A_  ,   A_  ,   A_  ,   A_ = False       )->      Any:
  '''simple docstring'''







  a						:		str      							=			get_yolos_config(A_       )

  # load original state_dict
  a						:		List[str]      							=			torch.load(A_  ,   map_location="cpu"       )["model"]

  # load 🤗 model
  a						:		List[str]      							=			YolosForObjectDetection(A_       )
  model.eval()
  a						:		Tuple      							=			convert_state_dict(A_  ,   A_       )
  model.load_state_dict(A_       )

  # Check outputs on an image, prepared by YolosImageProcessor
  a						:		Dict      							=			800 if yolos_name != "yolos_ti" else 512
  a						:		List[str]      							=			YolosImageProcessor(format="coco_detection"  ,   size=A_       )
  a						:		Optional[Any]      							=			image_processor(images=prepare_img()  ,   return_tensors="pt"       )
  a						:		str      							=			model(**A_       )
  a							,		a						:		Tuple      							=			outputs.logits, outputs.pred_boxes

  a							,		a						:		Dict      							=			None, None
  if yolos_name == "yolos_ti":
    a						:		str      							=			torch.tensor(
        [[-3_9.5_0_2_2, -1_1.9_8_2_0, -1_7.6_8_8_8], [-2_9.9_5_7_4, -9.9_7_6_9, -1_7.7_6_9_1], [-4_2.3_2_8_1, -2_0.7_2_0_0, -3_0.6_2_9_4]]       )
    a						:		int      							=			torch.tensor(
        [[0.4_0_2_1, 0.0_8_3_6, 0.7_9_7_9], [0.0_1_8_4, 0.2_6_0_9, 0.0_3_6_4], [0.1_7_8_1, 0.2_0_0_4, 0.2_0_9_5]]       )
  elif yolos_name == "yolos_s_200_pre":
    a						:		Any      							=			torch.tensor(
        [[-2_4.0_2_4_8, -1_0.3_0_2_4, -1_4.8_2_9_0], [-4_2.0_3_9_2, -1_6.8_2_0_0, -2_7.4_3_3_4], [-2_7.2_7_4_3, -1_1.8_1_5_4, -1_8.7_1_4_8]]       )
    a						:		str      							=			torch.tensor(
        [[0.2_5_5_9, 0.5_4_5_5, 0.4_7_0_6], [0.2_9_8_9, 0.7_2_7_9, 0.1_8_7_5], [0.7_7_3_2, 0.4_0_1_7, 0.4_4_6_2]]       )
  elif yolos_name == "yolos_s_300_pre":
    a						:		Optional[Any]      							=			torch.tensor(
        [[-3_6.2_2_2_0, -1_4.4_3_8_5, -2_3.5_4_5_7], [-3_5.6_9_7_0, -1_4.7_5_8_3, -2_1.3_9_3_5], [-3_1.5_9_3_9, -1_3.6_0_4_2, -1_6.8_0_4_9]]       )
    a						:		Optional[int]      							=			torch.tensor(
        [[0.7_6_1_4, 0.2_3_1_6, 0.4_7_2_8], [0.7_1_6_8, 0.4_4_9_5, 0.3_8_5_5], [0.4_9_9_6, 0.1_4_6_6, 0.9_9_9_6]]       )
  elif yolos_name == "yolos_s_dWr":
    a						:		List[str]      							=			torch.tensor(
        [[-4_2.8_6_6_8, -2_4.1_0_4_9, -4_1.1_6_9_0], [-3_4.7_4_5_6, -1_4.1_2_7_4, -2_4.9_1_9_4], [-3_3.7_8_9_8, -1_2.1_9_4_6, -2_5.6_4_9_5]]       )
    a						:		List[Any]      							=			torch.tensor(
        [[0.5_5_8_7, 0.2_7_7_3, 0.0_6_0_5], [0.5_0_0_4, 0.3_0_1_4, 0.9_9_9_4], [0.4_9_9_9, 0.1_5_4_8, 0.9_9_9_4]]       )
  elif yolos_name == "yolos_base":
    a						:		Any      							=			torch.tensor(
        [[-4_0.6_0_6_4, -2_4.3_0_8_4, -3_2.6_4_4_7], [-5_5.1_9_9_0, -3_0.7_7_1_9, -3_5.5_8_7_7], [-5_1.4_3_1_1, -3_3.3_5_0_7, -3_5.6_4_6_2]]       )
    a						:		Union[str, Any]      							=			torch.tensor(
        [[0.5_5_5_5, 0.2_7_9_4, 0.0_6_5_5], [0.9_0_4_9, 0.2_6_6_4, 0.1_8_9_4], [0.9_1_8_3, 0.1_9_8_4, 0.1_6_3_5]]       )
  else:
    raise ValueError(F'''Unknown yolos_name: {yolos_name}'''       )

  assert torch.allclose(logits[0, :3, :3]  ,   A_  ,   atol=1e-4       )
  assert torch.allclose(pred_boxes[0, :3, :3]  ,   A_  ,   atol=1e-4       )

  Path(A_       ).mkdir(exist_ok=A_       )
  print(F'''Saving model {yolos_name} to {pytorch_dump_folder_path}'''       )
  model.save_pretrained(A_       )
  print(F'''Saving image processor to {pytorch_dump_folder_path}'''       )
  image_processor.save_pretrained(A_       )

  if push_to_hub:
    a						:		Tuple      							=			{
        "yolos_ti": "yolos-tiny",
        "yolos_s_200_pre": "yolos-small",
        "yolos_s_300_pre": "yolos-small-300",
        "yolos_s_dWr": "yolos-small-dwr",
        "yolos_base": "yolos-base",
    }

    print("Pushing to the hub..."       )
    a						:		Any      							=			model_mapping[yolos_name]
    image_processor.push_to_hub(A_  ,   organization="hustvl"       )
    model.push_to_hub(A_  ,   organization="hustvl"       )


if __name__ == "__main__":
 __lowercase    					=      argparse.ArgumentParser()
 # Required parameters
 parser.add_argument(
     """--yolos_name""",
     default="""yolos_s_200_pre""",
     type=str,
     help=(
         """Name of the YOLOS model you'd like to convert. Should be one of 'yolos_ti', 'yolos_s_200_pre',"""
         """ 'yolos_s_300_pre', 'yolos_s_dWr', 'yolos_base'."""
     ),
 )
 parser.add_argument(
     """--checkpoint_path""", default=None, type=str, help="""Path to the original state dict (.pth file)."""
 )
 parser.add_argument(
     """--pytorch_dump_folder_path""", default=None, type=str, help="""Path to the output PyTorch model directory."""
 )
 parser.add_argument(
     """--push_to_hub""", action="""store_true""", help="""Whether or not to push the converted model to the 🤗 hub."""
 )

 __lowercase    					=      parser.parse_args()
 convert_yolos_checkpoint(args.yolos_name, args.checkpoint_path, args.pytorch_dump_folder_path, args.push_to_hub)








'''simple docstring'''




import os
from pickle import UnpicklingError
from typing import Dict, Tuple

import jax
import jax.numpy as jnp
import numpy as np
from flax.serialization import from_bytes
from flax.traverse_util import flatten_dict, unflatten_dict

import transformers

from .utils import logging


lowercase			:				Dict    		=			logging.get_logger(__name__)







def 		lowerCAmelCase_				(   snake_case__		,				snake_case__		,				snake_case__		,				snake_case__=False						):




    '''simple docstring'''



    try:
        import torch  # noqa: F401
    except ImportError:
        logger.error(
            '''Loading a PyTorch model in Flax, requires both PyTorch and Flax to be installed. Please see'''
            ''' https://pytorch.org/ and https://flax.readthedocs.io/en/latest/installation.html for installation'''
            ''' instructions.'''						)
        raise

    if not is_sharded:
        A       :   Union[str, Any]					=						os.path.abspath(snake_case__						)
        logger.info(F'Loading PyTorch weights from {pt_path}'						)

        A       :   Any					=						torch.load(snake_case__		,				map_location='''cpu'''						)
        logger.info(F'PyTorch checkpoint contains {sum(t.numel() for t in pt_state_dict.values()						):,} parameters.'						)

        A       :   List[str]					=						convert_pytorch_state_dict_to_flax(snake_case__		,				snake_case__						)
    else:
        # model is sharded and pytorch_checkpoint_path already contains the list of .pt shard files
        A       :   Any					=						convert_pytorch_sharded_state_dict_to_flax(snake_case__		,				snake_case__						)
    return flax_state_dict







def 		lowerCAmelCase_				(   snake_case__		,				snake_case__		,				snake_case__		,				snake_case__		,				):




    '''simple docstring'''



    def is_key_or_prefix_key_in_dict(snake_case__						) -> bool:
        return len(set(snake_case__						) & {key, (model_prefix,) + key}						) > 0

    # layer norm
    A       :   Union[str, Any]					=						pt_tuple_key[:-1] + ('''scale''',)
    if pt_tuple_key[-1] in ["weight", "gamma"] and is_key_or_prefix_key_in_dict(snake_case__						):
        return renamed_pt_tuple_key, pt_tensor

    # batch norm layer mean
    A       :   Tuple					=						pt_tuple_key[:-1] + ('''mean''',)
    if pt_tuple_key[-1] == "running_mean" and not is_key_or_prefix_key_in_dict(snake_case__						):
        return renamed_pt_tuple_key, pt_tensor

    # batch norm layer var
    A       :   Dict					=						pt_tuple_key[:-1] + ('''var''',)
    if pt_tuple_key[-1] == "running_var" and not is_key_or_prefix_key_in_dict(snake_case__						):
        return renamed_pt_tuple_key, pt_tensor

    # embedding
    A       :   Any					=						pt_tuple_key[:-1] + ('''embedding''',)
    if pt_tuple_key[-1] == "weight" and is_key_or_prefix_key_in_dict(snake_case__						):
        return renamed_pt_tuple_key, pt_tensor

    # conv layer
    A       :   Optional[Any]					=						pt_tuple_key[:-1] + ('''kernel''',)
    if pt_tuple_key[-1] == "weight" and pt_tensor.ndim == 4 and not is_key_or_prefix_key_in_dict(snake_case__						):
        A       :   List[Any]					=						pt_tensor.transpose(2		,				3		,				1		,				0						)
        return renamed_pt_tuple_key, pt_tensor

    # linear layer
    A       :   Optional[int]					=						pt_tuple_key[:-1] + ('''kernel''',)
    if pt_tuple_key[-1] == "weight" and not is_key_or_prefix_key_in_dict(snake_case__						):
        A       :   str					=						pt_tensor.T
        return renamed_pt_tuple_key, pt_tensor

    # old PyTorch layer norm weight
    A       :   Dict					=						pt_tuple_key[:-1] + ('''weight''',)
    if pt_tuple_key[-1] == "gamma":
        return renamed_pt_tuple_key, pt_tensor

    # old PyTorch layer norm bias
    A       :   List[Any]					=						pt_tuple_key[:-1] + ('''bias''',)
    if pt_tuple_key[-1] == "beta":
        return renamed_pt_tuple_key, pt_tensor

    # New `weight_norm` from https://github.com/huggingface/transformers/pull/24030
    A       :   Dict					=						None
    if pt_tuple_key[-3::2] == ("parametrizations", "original0"):
        A       :   List[Any]					=						pt_tuple_key[-2] + '''_g'''
    elif pt_tuple_key[-3::2] == ("parametrizations", "original1"):
        A       :   List[str]					=						pt_tuple_key[-2] + '''_v'''
    if name is not None:
        A       :   int					=						pt_tuple_key[:-3] + (name,)
        return renamed_pt_tuple_key, pt_tensor

    return pt_tuple_key, pt_tensor







def 		lowerCAmelCase_				(   snake_case__		,				snake_case__						):




    '''simple docstring'''



    A       :   Dict					=						{k: v.numpy() for k, v in pt_state_dict.items()}

    A       :   int					=						flax_model.base_model_prefix

    # use params dict if the model contains batch norm layers
    if "params" in flax_model.params:
        A       :   List[str]					=						flax_model.params['''params''']
    else:
        A       :   Dict					=						flax_model.params
    A       :   List[Any]					=						flatten_dict(snake_case__						)

    # add batch_stats keys,values to dict
    if "batch_stats" in flax_model.params:
        A       :   List[str]					=						flatten_dict(flax_model.params['''batch_stats''']						)
        random_flax_state_dict.update(snake_case__						)

    A       :   int					=						{}

    A       :   List[str]					=						(model_prefix not in flax_model_params) and (
        model_prefix in {k.split('''.'''						)[0] for k in pt_state_dict.keys()}
    )
    A       :   int					=						(model_prefix in flax_model_params) and (
        model_prefix not in {k.split('''.'''						)[0] for k in pt_state_dict.keys()}
    )

    # Need to change some parameters name to match Flax names
    for pt_key, pt_tensor in pt_state_dict.items():
        A       :   str					=						tuple(pt_key.split('''.'''						)						)

        # remove base model prefix if necessary
        A       :   Union[str, Any]					=						pt_tuple_key[0] == model_prefix
        if load_model_with_head_into_base_model and has_base_model_prefix:
            A       :   Any					=						pt_tuple_key[1:]

        # Correctly rename weight parameters
        A,  A       :   Dict					=						rename_key_and_reshape_tensor(
            snake_case__		,				snake_case__		,				snake_case__		,				snake_case__						)

        # add model prefix if necessary
        A       :   Any					=						(model_prefix,) + flax_key in random_flax_state_dict
        if load_base_model_into_model_with_head and require_base_model_prefix:
            A       :   int					=						(model_prefix,) + flax_key

        if flax_key in random_flax_state_dict:
            if flax_tensor.shape != random_flax_state_dict[flax_key].shape:
                raise ValueError(
                    F'PyTorch checkpoint seems to be incorrect. Weight {pt_key} was expected to be of shape '
                    F'{random_flax_state_dict[flax_key].shape}, but is {flax_tensor.shape}.'						)

        # add batch stats if the model contains batchnorm layers
        if "batch_stats" in flax_model.params:
            if "mean" in flax_key[-1] or "var" in flax_key[-1]:
                A       :   Tuple					=						jnp.asarray(snake_case__						)
                continue
            # remove num_batches_tracked key
            if "num_batches_tracked" in flax_key[-1]:
                flax_state_dict.pop(snake_case__		,				snake_case__						)
                continue

            # also add unexpected weight so that warning is thrown
            A       :   List[str]					=						jnp.asarray(snake_case__						)

        else:
            # also add unexpected weight so that warning is thrown
            A       :   Optional[Any]					=						jnp.asarray(snake_case__						)

    return unflatten_dict(snake_case__						)







def 		lowerCAmelCase_				(   snake_case__		,				snake_case__						):




    '''simple docstring'''



    import torch

    # Load the index
    A       :   Union[str, Any]					=						{}
    for shard_file in shard_filenames:
        # load using msgpack utils
        A       :   List[str]					=						torch.load(snake_case__						)
        A       :   int					=						{k: v.numpy() for k, v in pt_state_dict.items()}

        A       :   Tuple					=						flax_model.base_model_prefix

        # use params dict if the model contains batch norm layers and then add batch_stats keys,values to dict
        if "batch_stats" in flax_model.params:
            A       :   Optional[int]					=						flax_model.params['''params''']

            A       :   List[Any]					=						flatten_dict(snake_case__						)
            random_flax_state_dict.update(flatten_dict(flax_model.params['''batch_stats''']						)						)
        else:
            A       :   Dict					=						flax_model.params
            A       :   Tuple					=						flatten_dict(snake_case__						)

        A       :   List[str]					=						(model_prefix not in flax_model_params) and (
            model_prefix in {k.split('''.'''						)[0] for k in pt_state_dict.keys()}
        )
        A       :   List[str]					=						(model_prefix in flax_model_params) and (
            model_prefix not in {k.split('''.'''						)[0] for k in pt_state_dict.keys()}
        )
        # Need to change some parameters name to match Flax names
        for pt_key, pt_tensor in pt_state_dict.items():
            A       :   int					=						tuple(pt_key.split('''.'''						)						)

            # remove base model prefix if necessary
            A       :   List[str]					=						pt_tuple_key[0] == model_prefix
            if load_model_with_head_into_base_model and has_base_model_prefix:
                A       :   Union[str, Any]					=						pt_tuple_key[1:]

            # Correctly rename weight parameters
            A,  A       :   Any					=						rename_key_and_reshape_tensor(
                snake_case__		,				snake_case__		,				snake_case__		,				snake_case__						)
            # add model prefix if necessary
            A       :   int					=						(model_prefix,) + flax_key in random_flax_state_dict
            if load_base_model_into_model_with_head and require_base_model_prefix:
                A       :   int					=						(model_prefix,) + flax_key

            if flax_key in random_flax_state_dict:
                if flax_tensor.shape != random_flax_state_dict[flax_key].shape:
                    raise ValueError(
                        F'PyTorch checkpoint seems to be incorrect. Weight {pt_key} was expected to be of shape '
                        F'{random_flax_state_dict[flax_key].shape}, but is {flax_tensor.shape}.'						)

            # add batch stats if the model contains batchnorm layers
            if "batch_stats" in flax_model.params:
                if "mean" in flax_key[-1]:
                    A       :   Optional[int]					=						jnp.asarray(snake_case__						)
                    continue
                if "var" in flax_key[-1]:
                    A       :   Optional[int]					=						jnp.asarray(snake_case__						)
                    continue
                # remove num_batches_tracked key
                if "num_batches_tracked" in flax_key[-1]:
                    flax_state_dict.pop(snake_case__		,				snake_case__						)
                    continue

                # also add unexpected weight so that warning is thrown
                A       :   Optional[Any]					=						jnp.asarray(snake_case__						)

            else:
                # also add unexpected weight so that warning is thrown
                A       :   Optional[Any]					=						jnp.asarray(snake_case__						)
    return unflatten_dict(snake_case__						)







def 		lowerCAmelCase_				(   snake_case__		,				snake_case__						):




    '''simple docstring'''



    A       :   Dict					=						os.path.abspath(snake_case__						)
    logger.info(F'Loading Flax weights from {flax_checkpoint_path}'						)

    # import correct flax class
    A       :   List[str]					=						getattr(snake_case__		,				'''Flax''' + model.__class__.__name__						)

    # load flax weight dict
    with open(snake_case__		,				'''rb'''						) as state_f:
        try:
            A       :   int					=						from_bytes(snake_case__		,				state_f.read()						)
        except UnpicklingError:
            raise EnvironmentError(F'Unable to convert {flax_checkpoint_path} to Flax deserializable object. '						)

    return load_flax_weights_in_pytorch_model(snake_case__		,				snake_case__						)







def 		lowerCAmelCase_				(   snake_case__		,				snake_case__						):




    '''simple docstring'''



    try:
        import torch  # noqa: F401
    except ImportError:
        logger.error(
            '''Loading a Flax weights in PyTorch, requires both PyTorch and Flax to be installed. Please see'''
            ''' https://pytorch.org/ and https://flax.readthedocs.io/en/latest/installation.html for installation'''
            ''' instructions.'''						)
        raise

    # check if we have bf16 weights
    A       :   List[str]					=						flatten_dict(jax.tree_util.tree_map(lambda snake_case__						: x.dtype == jnp.bfloataa		,				snake_case__						)						).values()
    if any(snake_case__						):
        # convert all weights to fp32 if the are bf16 since torch.from_numpy can-not handle bf16
        # and bf16 is not fully supported in PT yet.
        logger.warning(
            '''Found ``bfloat16`` weights in Flax model. Casting all ``bfloat16`` weights to ``float32`` '''
            '''before loading those in PyTorch model.'''						)
        A       :   Optional[Any]					=						jax.tree_util.tree_map(
            lambda snake_case__						: params.astype(np.floataa						) if params.dtype == jnp.bfloataa else params		,				snake_case__						)

    A       :   Union[str, Any]					=						flatten_dict(snake_case__						)
    A       :   List[Any]					=						pt_model.state_dict()

    A       :   Union[str, Any]					=						(pt_model.base_model_prefix in flax_state) and (
        pt_model.base_model_prefix not in {k.split('''.'''						)[0] for k in pt_model_dict.keys()}
    )
    A       :   Tuple					=						(pt_model.base_model_prefix not in flax_state) and (
        pt_model.base_model_prefix in {k.split('''.'''						)[0] for k in pt_model_dict.keys()}
    )

    # keep track of unexpected & missing keys
    A       :   int					=						[]
    A       :   Any					=						set(pt_model_dict.keys()						)

    for flax_key_tuple, flax_tensor in flax_state_dict.items():
        A       :   Union[str, Any]					=						flax_key_tuple[0] == pt_model.base_model_prefix
        A       :   int					=						'''.'''.join((pt_model.base_model_prefix,) + flax_key_tuple						) in pt_model_dict

        # adapt flax_key to prepare for loading from/to base model only
        if load_model_with_head_into_base_model and has_base_model_prefix:
            A       :   List[str]					=						flax_key_tuple[1:]
        elif load_base_model_into_model_with_head and require_base_model_prefix:
            A       :   Optional[Any]					=						(pt_model.base_model_prefix,) + flax_key_tuple

        # rename flax weights to PyTorch format
        if flax_key_tuple[-1] == "kernel" and flax_tensor.ndim == 4 and ".".join(snake_case__						) not in pt_model_dict:
            # conv layer
            A       :   Optional[int]					=						flax_key_tuple[:-1] + ('''weight''',)
            A       :   Optional[int]					=						jnp.transpose(snake_case__		,				(3, 2, 0, 1)						)
        elif flax_key_tuple[-1] == "kernel" and ".".join(snake_case__						) not in pt_model_dict:
            # linear layer
            A       :   Tuple					=						flax_key_tuple[:-1] + ('''weight''',)
            A       :   Tuple					=						flax_tensor.T
        elif flax_key_tuple[-1] in ["scale", "embedding"]:
            A       :   Optional[int]					=						flax_key_tuple[:-1] + ('''weight''',)

        # adding batch stats from flax batch norm to pt
        elif "mean" in flax_key_tuple[-1]:
            A       :   Tuple					=						flax_key_tuple[:-1] + ('''running_mean''',)
        elif "var" in flax_key_tuple[-1]:
            A       :   Tuple					=						flax_key_tuple[:-1] + ('''running_var''',)

        if "batch_stats" in flax_state:
            A       :   List[Any]					=						'''.'''.join(flax_key_tuple[1:]						)  # Remove the params/batch_stats header
        else:
            A       :   Union[str, Any]					=						'''.'''.join(snake_case__						)

        # We also need to look at `pt_model_dict` and see if there are keys requiring further transformation.
        A       :   int					=						{}
        # New `weight_norm` from https://github.com/huggingface/transformers/pull/24030
        for key in pt_model_dict:
            A       :   Optional[int]					=						key.split('''.'''						)
            A       :   Dict					=						None
            if key_components[-3::2] == ["parametrizations", "original0"]:
                A       :   List[str]					=						key_components[-2] + '''_g'''
            elif key_components[-3::2] == ["parametrizations", "original1"]:
                A       :   List[Any]					=						key_components[-2] + '''_v'''
            if name is not None:
                A       :   str					=						key_components[:-3] + [name]
                A       :   Optional[Any]					=						'''.'''.join(snake_case__						)
                A       :   Optional[Any]					=						key

        if flax_key in special_pt_names:
            A       :   Optional[Any]					=						special_pt_names[flax_key]

        if flax_key in pt_model_dict:
            if flax_tensor.shape != pt_model_dict[flax_key].shape:
                raise ValueError(
                    F'Flax checkpoint seems to be incorrect. Weight {flax_key_tuple} was expected '
                    F'to be of shape {pt_model_dict[flax_key].shape}, but is {flax_tensor.shape}.'						)
            else:
                # add weight to pytorch dict
                A       :   Dict					=						np.asarray(snake_case__						) if not isinstance(snake_case__		,				np.ndarray						) else flax_tensor
                A       :   Dict					=						torch.from_numpy(snake_case__						)
                # remove from missing keys
                missing_keys.remove(snake_case__						)
        else:
            # weight is not expected by PyTorch model
            unexpected_keys.append(snake_case__						)

    pt_model.load_state_dict(snake_case__						)

    # re-transform missing_keys to list
    A       :   List[Any]					=						list(snake_case__						)

    if len(snake_case__						) > 0:
        logger.warning(
            '''Some weights of the Flax model were not used when initializing the PyTorch model'''
            F' {pt_model.__class__.__name__}: {unexpected_keys}\n- This IS expected if you are initializing'
            F' {pt_model.__class__.__name__} from a Flax model trained on another task or with another architecture'
            ''' (e.g. initializing a BertForSequenceClassification model from a FlaxBertForPreTraining model).\n- This'''
            F' IS NOT expected if you are initializing {pt_model.__class__.__name__} from a Flax model that you expect'
            ''' to be exactly identical (e.g. initializing a BertForSequenceClassification model from a'''
            ''' FlaxBertForSequenceClassification model).'''						)
    else:
        logger.warning(F'All Flax model weights were used when initializing {pt_model.__class__.__name__}.\n'						)
    if len(snake_case__						) > 0:
        logger.warning(
            F'Some weights of {pt_model.__class__.__name__} were not initialized from the Flax model and are newly'
            F' initialized: {missing_keys}\nYou should probably TRAIN this model on a down-stream task to be able to'
            ''' use it for predictions and inference.'''						)
    else:
        logger.warning(
            F'All the weights of {pt_model.__class__.__name__} were initialized from the Flax model.\n'
            '''If your task is similar to the task the model of the checkpoint was trained on, '''
            F'you can already use {pt_model.__class__.__name__} for predictions without further training.'						)

    return pt_model




