


'''simple docstring'''






from __future__ import annotations

import random

from matplotlib import animation
from matplotlib import pyplot as plt

# Frame rate of the animation
a_       :     List[Any] 							=     2_0

# Time between time steps in seconds
a_       :     Union[str, Any] 							=     INTERVAL / 1_0_0_0




class 			a  :
 def __init__(			self   ,					__magic_name__   ,					__magic_name__   ,					__magic_name__   ,					__magic_name__   ,					__magic_name__ = 1.0   ,					__magic_name__ = 1.0   ,					__magic_name__ = "blue"   ,					)       ->				None:
      _a         =				position_x
      _a         =				position_y
      _a         =				velocity_x
      _a         =				velocity_y
      _a         =				mass
      _a         =				size
      _a         =				color
 @property
 def 				__UpperCAmelCase		(			self    )       ->				tuple[float, float]:
      return self.position_x, self.position_y
 @property
 def 				__UpperCAmelCase		(			self    )       ->				tuple[float, float]:
      return self.velocity_x, self.velocity_y
 def 				__UpperCAmelCase		(			self   ,					__magic_name__   ,					__magic_name__   ,					__magic_name__    )       ->				None:
      self.velocity_x += force_x * delta_time
      self.velocity_y += force_y * delta_time




 def 				__UpperCAmelCase		(			self   ,					__magic_name__    )       ->				None:
      self.position_x += self.velocity_x * delta_time
      self.position_y += self.velocity_y * delta_time





class 			a  :
 def __init__(			self   ,					__magic_name__   ,					__magic_name__ = 1.0   ,					__magic_name__ = 1.0   ,					__magic_name__ = 0.0   ,					)       ->				None:
      _a         =				bodies
      _a         =				gravitation_constant
      _a         =				time_factor
      _a         =				softening_factor
 def __len__(			self    )       ->				int:
      return len(self.bodies    )




 def 				__UpperCAmelCase		(			self   ,					__magic_name__    )       ->				None:
      for bodya in self.bodies:
           _a         =				0.0
           _a         =				0.0
           for bodya in self.bodies:
                if bodya != bodya:
                     _a         =				bodya.position_x - bodya.position_x
                     _a         =				bodya.position_y - bodya.position_y

                     # Calculation of the distance using Pythagoras's theorem
                     # Extra factor due to the softening technique
                     _a         =				(dif_x**2 + dif_y**2 + self.softening_factor) ** (
                         1 / 2
                     )

                     # Newton's law of universal gravitation.
                     force_x += (
                         self.gravitation_constant * bodya.mass * dif_x / distance**3
                     )
                     force_y += (
                         self.gravitation_constant * bodya.mass * dif_y / distance**3
                     )

            # Update the body's velocity once all the force components have been added
           bodya.update_velocity(__magic_name__   ,					__magic_name__   ,					delta_time * self.time_factor    )

      # Update the positions only after all the velocities have been updated
      for body in self.bodies:
           body.update_position(delta_time * self.time_factor    )






def 						_A					(lowerCAmelCase__	:BodySystem					,    lowerCAmelCase__	:float					,    lowerCAmelCase__	:list[plt.Circle]		) ->	None:




     '''simple docstring'''



     body_system.update_system(lowerCAmelCase__		)

     # Update the positions of the patches
     for patch, body in zip(lowerCAmelCase__					,    body_system.bodies		):
          _a         =				(body.position_x, body.position_y)






def 						_A					(lowerCAmelCase__	:str					,    lowerCAmelCase__	:BodySystem					,    lowerCAmelCase__	:float = -1					,    lowerCAmelCase__	:float = 1					,    lowerCAmelCase__	:float = -1					,    lowerCAmelCase__	:float = 1					,    ) ->	None:




     '''simple docstring'''



     _a         =				plt.figure()
     fig.canvas.set_window_title(lowerCAmelCase__		)
     _a         =				plt.axes(
         xlim=(x_start, x_end)					,    ylim=(y_start, y_end)		)  # Set section to be plotted
     plt.gca().set_aspect('equal'		)  # Fix aspect ratio

     # Each body is drawn as a patch by the plt-function
     _a         =				[
         plt.Circle((body.position_x, body.position_y)					,    body.size					,    fc=body.color		)
         for body in body_system.bodies
     ]

     for patch in patches:
          ax.add_patch(lowerCAmelCase__		)

     # Function called at each step of the animation
     def update(lowerCAmelCase__	:int		) -> list[plt.Circle]:
          update_step(lowerCAmelCase__					,    lowerCAmelCase__					,    lowerCAmelCase__		)
          return patches

     _a         =				animation.FuncAnimation(  # noqa: F841
         lowerCAmelCase__					,    lowerCAmelCase__					,    interval=lowerCAmelCase__					,    blit=lowerCAmelCase__		)

     plt.show()






def 						_A					() ->	BodySystem:




     '''simple docstring'''



     _a         =				0.9_7_0_0_4_3_6
     _a         =				-0.2_4_3_0_8_7_5_3
     _a         =				0.4_6_6_2_0_3_6_8_5
     _a         =				0.4_3_2_3_6_5_7_3

     _a         =				[
         Body(lowerCAmelCase__					,    lowerCAmelCase__					,    lowerCAmelCase__					,    lowerCAmelCase__					,    size=0.2					,    color='red'		),
         Body(-position_x					,    -position_y					,    lowerCAmelCase__					,    lowerCAmelCase__					,    size=0.2					,    color='green'		),
         Body(0					,    0					,    -2 * velocity_x					,    -2 * velocity_y					,    size=0.2					,    color='blue'		),
     ]
     return BodySystem(lowerCAmelCase__					,    time_factor=3		)






def 						_A					() ->	BodySystem:




     '''simple docstring'''



     _a         =				7.3476E22
     _a         =				5.972E24
     _a         =				10_22
     _a         =				3_84_39_90_00
     _a         =				6.674E-11

     # Calculation of the respective velocities so that total impulse is zero,
     # i.e. the two bodies together don't move
     _a         =				earth_mass * velocity_dif / (earth_mass + moon_mass)
     _a         =				moon_velocity - velocity_dif

     _a         =				Body(-earth_moon_distance					,    0					,    0					,    lowerCAmelCase__					,    lowerCAmelCase__					,    10_00_00_00					,    'grey'		)
     _a         =				Body(0					,    0					,    0					,    lowerCAmelCase__					,    lowerCAmelCase__					,    50_00_00_00					,    'blue'		)
     return BodySystem([earth, moon]					,    lowerCAmelCase__					,    time_factor=1_00_00_00		)






def 						_A					() ->	BodySystem:




     '''simple docstring'''



     _a         =				[]
     for _ in range(10		):
          _a         =				random.uniform(-0.5					,    0.5		)
          _a         =				random.uniform(-0.5					,    0.5		)

          # Bodies are created pairwise with opposite velocities so that the
          # total impulse remains zero
          bodies.append(
              Body(
                  random.uniform(-0.5					,    0.5		)					,    random.uniform(-0.5					,    0.5		)					,    lowerCAmelCase__					,    lowerCAmelCase__					,    size=0.0_5					,    )		)
          bodies.append(
              Body(
                  random.uniform(-0.5					,    0.5		)					,    random.uniform(-0.5					,    0.5		)					,    -velocity_x					,    -velocity_y					,    size=0.0_5					,    )		)
     return BodySystem(lowerCAmelCase__					,    0.0_1					,    10					,    0.1		)


if __name__ == "__main__":
 plot("Figure-8 solution to the 3-body-problem", example_a(), -2, 2, -2, 2)
 plot(
     "Moon's orbit around the earth",
     example_a(),
     -4_3_0_0_0_0_0_0_0,
     4_3_0_0_0_0_0_0_0,
     -4_3_0_0_0_0_0_0_0,
     4_3_0_0_0_0_0_0_0,
 )
 plot("Random system with many bodies", example_a(), -1.5, 1.5, -1.5, 1.5)





'''simple docstring'''






import logging
import os
import sys
from dataclasses import dataclass, field
from typing import List, Optional

import torch
from datasets import Dataset
from torch import nn
from tqdm.auto import tqdm

from transformers import (
    AutoModelForSequenceClassification,
    AutoTokenizer,
    HfArgumentParser,
    Trainer,
    TrainingArguments,
    set_seed,
    utils,
)
from transformers.trainer_utils import get_last_checkpoint, is_main_process


a_       :     List[str] 							=     "\nDistills an NLI-based zero-shot classifier to a smaller, more efficient model with a fixed set of candidate class\nnames. Useful for speeding up zero-shot classification in cases where labeled training data is not available, but\nwhen only a single fixed set of classes is needed. Takes a teacher NLI model, student classifier model, unlabeled\ndataset, and set of K possible class names. Yields a single classifier with K outputs corresponding to the provided\nclass names.\n"

a_       :     Dict 							=     logging.getLogger(__name__)




@dataclass
class 			a  :
 _lowerCAmelCase			       =						field(
     default="""roberta-large-mnli"""	,					metadata={"""help""": """The NLI/zero-shot teacher model to be distilled."""}							)
 _lowerCAmelCase			       =						field(
     default="""This example is {}."""	,					metadata={
         """help""": (
             """Template used to turn class names into mock hypotheses for teacher NLI model. Must include {{}}"""
             """where class name is inserted."""
         )
     }	,					)
 _lowerCAmelCase			       =						field(
     default=3_2	,					metadata={"""help""": """Batch size for generating teacher predictions."""}							)
 _lowerCAmelCase			       =						field(
     default=_SCREAMING_SNAKE_CASE	,					metadata={
         """help""": (
             """Allow multiple classes to be true rather than forcing them to sum to 1 (sometimes called"""
             """multi-class multi-label classification)."""
         )
     }	,					)
 _lowerCAmelCase			       =						field(
     default=1.0	,					metadata={"""help""": """Temperature applied to teacher softmax for distillation."""}							)





@dataclass
class 			a  :
 _lowerCAmelCase			       =						field(
     default="""distilbert-base-uncased"""	,					metadata={"""help""": """The NLI/zero-shot teacher model to be distilled."""}							)





@dataclass
class 			a  :
 _lowerCAmelCase			       =						field(metadata={"""help""": """Text file with one unlabeled instance per line."""}							)
 _lowerCAmelCase			       =						field(metadata={"""help""": """Text file with one class name per line."""}							)
 _lowerCAmelCase			       =						field(
     default=_SCREAMING_SNAKE_CASE	,					metadata={"""help""": """Whether to use one of the fast tokenizer (backed by the Rust tokenizers library) or not."""}	,					)





@dataclass
class 			a  (  _SCREAMING_SNAKE_CASE							):
 _lowerCAmelCase			       =						field(
     default=_SCREAMING_SNAKE_CASE	,					metadata={"""help""": """The output directory where the model predictions and checkpoints will be written."""}	,					)
 _lowerCAmelCase			       =						field(
     default=3_2	,					metadata={"""help""": """Batch size per GPU/TPU core/CPU for training."""}							)
 _lowerCAmelCase			       =						field(
     default=1_2_8	,					metadata={"""help""": """Batch size per GPU/TPU core/CPU for evaluation."""}							)
 _lowerCAmelCase			       =						field(default=1.0	,					metadata={"""help""": """Total number of training epochs to perform."""}							)
 _lowerCAmelCase			       =						field(default=_SCREAMING_SNAKE_CASE	,					metadata={"""help""": """Whether to run training of student model."""}							)
 _lowerCAmelCase			       =						field(
     default=_SCREAMING_SNAKE_CASE	,					metadata={
         """help""": (
             """Whether to evaluate the agreement of the final student predictions and the teacher predictions"""
             """after training."""
         )
     }	,					)
 _lowerCAmelCase			       =						field(
     default=0	,					metadata={
         """help""": (
             """Limit the total amount of checkpoints."""
             """Deletes the older checkpoints in the output_dir. Default is 0 (no checkpoints)."""
         )
     }	,					)





class 			a  (  _SCREAMING_SNAKE_CASE							):
 def 				__UpperCAmelCase		(			self   ,					__magic_name__   ,					__magic_name__   ,					__magic_name__=False    )       ->				List[Any]:
      _a         =				inputs['labels']
      _a         =				model(inputs['input_ids']   ,					attention_mask=inputs['attention_mask']    )
      _a         =				outputs[0]

      _a         =				-torch.sum(target_p * logits.log_softmax(dim=-1    )   ,					axis=-1    ).mean()

      if return_outputs:
           return loss, outputs

      return loss






def 						_A					(lowerCAmelCase__	:Optional[int]		) ->	Dict:




     '''simple docstring'''



     _a         =				[]
     with open(lowerCAmelCase__					,    'r'		) as f:
          for line in f:
               _a         =				line.strip()
               if len(lowerCAmelCase__		) > 0:
                    lines.append(lowerCAmelCase__		)
     return lines






def 						_A					(lowerCAmelCase__	:Union[str, Any]					,    lowerCAmelCase__	:List[str]					,    lowerCAmelCase__	:List[Any]		) ->	Union[str, Any]:




     '''simple docstring'''



     _a         =				[]
     _a         =				[]
     for example in examples:
          for name in class_names:
               premises.append(lowerCAmelCase__		)
               hypotheses.append(hypothesis_template.format(lowerCAmelCase__		)		)
     return premises, hypotheses






def 						_A					(lowerCAmelCase__	:Any		) ->	List[str]:




     '''simple docstring'''



     for label, ind in config.labelaid.items():
          if label.lower().startswith('entail'		):
               return ind
     logger.warning('Could not identify entailment dimension from teacher config label2id. Setting to -1.'		)
     return -1






def 						_A					(lowerCAmelCase__	:str					,    lowerCAmelCase__	:List[str]					,    lowerCAmelCase__	:List[str]					,    lowerCAmelCase__	:str					,    lowerCAmelCase__	:int					,    lowerCAmelCase__	:float					,    lowerCAmelCase__	:bool					,    lowerCAmelCase__	:bool					,    lowerCAmelCase__	:bool					,    lowerCAmelCase__	:bool					,    ) ->	Dict:




     '''simple docstring'''



     _a         =				AutoModelForSequenceClassification.from_pretrained(lowerCAmelCase__		)
     _a         =				model.config
     if not no_cuda and torch.cuda.is_available():
          _a         =				nn.DataParallel(model.cuda()		)
          batch_size *= len(model.device_ids		)
     _a         =				AutoTokenizer.from_pretrained(lowerCAmelCase__					,    use_fast=lowerCAmelCase__		)

     _a   , _a         =				get_premise_hypothesis_pairs(lowerCAmelCase__					,    lowerCAmelCase__					,    lowerCAmelCase__		)
     _a         =				[]

     for i in tqdm(range(0					,    len(lowerCAmelCase__		)					,    lowerCAmelCase__		)		):
          _a         =				premises[i : i + batch_size]
          _a         =				hypotheses[i : i + batch_size]

          _a         =				tokenizer(
              lowerCAmelCase__					,    lowerCAmelCase__					,    padding=lowerCAmelCase__					,    truncation='only_first'					,    return_tensors='pt'					,    )

          with torch.cuda.amp.autocast(enabled=lowerCAmelCase__		):
               with torch.no_grad():
                    _a         =				model(**lowerCAmelCase__		)
          logits.append(outputs.logits.detach().cpu().float()		)

     _a         =				get_entailment_id(lowerCAmelCase__		)
     _a         =				-1 if entail_id == 0 else 0
     _a         =				torch.cat(lowerCAmelCase__					,    dim=0		)  # N*K x 3
     _a         =				logits.reshape(len(lowerCAmelCase__		)					,    len(lowerCAmelCase__		)					,    -1		)[..., [contr_id, entail_id]]  # N x K x 2

     if multi_label:
          # softmax over (contr, entail) logits for each class independently
          _a         =				(nli_logits / temperature).softmax(-1		)
     else:
          # softmax over entail logits across classes s.t. class probabilities sum to 1.
          _a         =				(nli_logits / temperature).softmax(1		)

     return nli_prob[..., 1]  # N x K






def 						_A					() ->	str:




     '''simple docstring'''



     _a         =				HfArgumentParser(
         (DataTrainingArguments, TeacherModelArguments, StudentModelArguments, DistillTrainingArguments)					,    description=lowerCAmelCase__					,    )

     if len(sys.argv		) == 2 and sys.argv[1].endswith('.json'		):
          # If we pass only one argument to the script and it's the path to a json file,
          # let's parse it to get our arguments.
          _a   , _a   , _a   , _a         =				parser.parse_json_file(
              json_file=os.path.abspath(sys.argv[1]		)		)
     else:
          _a   , _a   , _a   , _a         =				parser.parse_args_into_dataclasses()

     # Detecting last checkpoint.
     _a         =				None
     if os.path.isdir(training_args.output_dir		) and training_args.do_train and not training_args.overwrite_output_dir:
          _a         =				get_last_checkpoint(training_args.output_dir		)
          if last_checkpoint is None and len(os.listdir(training_args.output_dir		)		) > 0:
               raise ValueError(
                   f'Output directory ({training_args.output_dir}) already exists and is not empty. '
                   'Use --overwrite_output_dir to overcome.'		)
          elif last_checkpoint is not None:
               logger.info(
                   f'Checkpoint detected, resuming training at {last_checkpoint}. To avoid this behavior, change '
                   'the `--output_dir` or add `--overwrite_output_dir` to train from scratch.'		)

    # Setup logging
     logging.basicConfig(
         format='%(asctime)s - %(levelname)s - %(name)s - %(message)s'					,    datefmt='%m/%d/%Y %H:%M:%S'					,    handlers=[logging.StreamHandler(sys.stdout		)]					,    )
     logger.setLevel(logging.INFO if is_main_process(training_args.local_rank		) else logging.WARN		)

     # Log on each process the small summary:
     logger.warning(
         f'Process rank: {training_args.local_rank}, device: {training_args.device}, n_gpu: {training_args.n_gpu}'
         + f'distributed training: {bool(training_args.local_rank != -1		)}, 16-bits training: {training_args.fpaa}'		)
     # Set the verbosity to info of the Transformers logger (on main process only):
     if is_main_process(training_args.local_rank		):
          utils.logging.set_verbosity_info()
          utils.logging.enable_default_handler()
          utils.logging.enable_explicit_format()

     if training_args.local_rank != -1:
          raise ValueError('Distributed training is not currently supported.'		)
     if training_args.tpu_num_cores is not None:
          raise ValueError('TPU acceleration is not currently supported.'		)

     logger.info(f'Training/evaluation parameters {training_args}'		)

     # Set seed before initializing model.
     set_seed(training_args.seed		)

     # 1. read in data
     _a         =				read_lines(data_args.data_file		)
     _a         =				read_lines(data_args.class_names_file		)

     # 2. get teacher predictions and load into dataset
     logger.info('Generating predictions from zero-shot teacher model'		)
     _a         =				get_teacher_predictions(
         teacher_args.teacher_name_or_path					,    lowerCAmelCase__					,    lowerCAmelCase__					,    teacher_args.hypothesis_template					,    teacher_args.teacher_batch_size					,    teacher_args.temperature					,    teacher_args.multi_label					,    data_args.use_fast_tokenizer					,    training_args.no_cuda					,    training_args.fpaa					,    )
     _a         =				Dataset.from_dict(
         {
             'text': examples,
             'labels': teacher_soft_preds,
         }		)

     # 3. create student
     logger.info('Initializing student model'		)
     _a         =				AutoModelForSequenceClassification.from_pretrained(
         student_args.student_name_or_path					,    num_labels=len(lowerCAmelCase__		)		)
     _a         =				AutoTokenizer.from_pretrained(student_args.student_name_or_path					,    use_fast=data_args.use_fast_tokenizer		)
     _a         =				dict(enumerate(lowerCAmelCase__		)		)
     _a         =				{label: i for i, label in enumerate(lowerCAmelCase__		)}

     # 4. train student on teacher predictions
     _a         =				dataset.map(lowerCAmelCase__					,    input_columns='text'		)
     dataset.set_format('torch'		)

     def compute_metrics(lowerCAmelCase__	:Tuple					,    lowerCAmelCase__	:List[Any]=False		):
          _a         =				p.predictions.argmax(-1		)
          _a         =				p.label_ids.argmax(-1		)  # "label_ids" are actually distributions
          return {"agreement": (preds == proxy_labels).mean().item()}

     _a         =				DistillationTrainer(
         model=lowerCAmelCase__					,    tokenizer=lowerCAmelCase__					,    args=lowerCAmelCase__					,    train_dataset=lowerCAmelCase__					,    compute_metrics=lowerCAmelCase__					,    )

     if training_args.do_train:
          logger.info('Training student model on teacher predictions'		)
          trainer.train()

     if training_args.do_eval:
          _a         =				trainer.evaluate(eval_dataset=lowerCAmelCase__		)['eval_agreement']
          logger.info(f'Agreement of student and teacher predictions: {agreement * 1_00:0.2f}%'		)

     trainer.save_model()


if __name__ == "__main__":
 main()

