
"""simple docstring"""



import asyncio
import os
import shutil
import subprocess
import sys
import tempfile
import unittest
from distutils.util import strtobool
from functools import partial
from pathlib import Path
from typing import List, Union
from unittest import mock

import torch

from ..state import AcceleratorState, PartialState
from ..utils import (
    gather,
    is_bnb_available,
    is_comet_ml_available,
    is_datasets_available,
    is_deepspeed_available,
    is_mps_available,
    is_safetensors_available,
    is_tensorboard_available,
    is_torch_version,
    is_tpu_available,
    is_transformers_available,
    is_wandb_available,
    is_xpu_available,
)
def 					lowerCamelCase   (     _snake_case    ,_snake_case=False ):
    try:
        UpperCAmelCase__	:      Optional[Any]     							=					os.environ[key]
    except KeyError:
        # KEY isn't set, default to `default`.
        UpperCAmelCase__	:      Optional[int]     							=					default
    else:
        # KEY is set, convert it to True or False.
        try:
            UpperCAmelCase__	:      Tuple     							=					strtobool(_snake_case )
        except ValueError:
            # More values are supported, but let's keep the message simple.
            raise ValueError(F'''If set, {key} must be yes or no.''' )
    return _value


UpperCamelCase__          =	parse_flag_from_env('RUN_SLOW', default=False)
def 					lowerCamelCase   (     _snake_case ):
    return unittest.skip('Test was skipped' )(_snake_case )
def 					lowerCamelCase   (     _snake_case ):
    return unittest.skipUnless(_run_slow_tests    ,'test is slow' )(_snake_case )
def 					lowerCamelCase   (     _snake_case ):
    return unittest.skipUnless(not torch.cuda.is_available()    ,'test requires only a CPU' )(_snake_case )
def 					lowerCamelCase   (     _snake_case ):
    return unittest.skipUnless(torch.cuda.is_available()    ,'test requires a GPU' )(_snake_case )
def 					lowerCamelCase   (     _snake_case ):
    return unittest.skipUnless(is_xpu_available()    ,'test requires a XPU' )(_snake_case )
def 					lowerCamelCase   (     _snake_case ):
    return unittest.skipUnless(is_mps_available()    ,'test requires a `mps` backend support in `torch`' )(_snake_case )
def 					lowerCamelCase   (     _snake_case ):
    return unittest.skipUnless(
        is_transformers_available() and is_datasets_available()    ,'test requires the Hugging Face suite' )(_snake_case )
def 					lowerCamelCase   (     _snake_case ):
    return unittest.skipUnless(is_bnb_available()    ,'test requires the bitsandbytes library' )(_snake_case )
def 					lowerCamelCase   (     _snake_case ):
    return unittest.skipUnless(is_tpu_available()    ,'test requires TPU' )(_snake_case )
def 					lowerCamelCase   (     _snake_case ):
    return unittest.skipUnless(torch.cuda.device_count() == 1    ,'test requires a GPU' )(_snake_case )
def 					lowerCamelCase   (     _snake_case ):
    return unittest.skipUnless(torch.xpu.device_count() == 1    ,'test requires a XPU' )(_snake_case )
def 					lowerCamelCase   (     _snake_case ):
    return unittest.skipUnless(torch.cuda.device_count() > 1    ,'test requires multiple GPUs' )(_snake_case )
def 					lowerCamelCase   (     _snake_case ):
    return unittest.skipUnless(torch.xpu.device_count() > 1    ,'test requires multiple XPUs' )(_snake_case )
def 					lowerCamelCase   (     _snake_case ):
    return unittest.skipUnless(is_safetensors_available()    ,'test requires safetensors' )(_snake_case )
def 					lowerCamelCase   (     _snake_case ):
    return unittest.skipUnless(is_deepspeed_available()    ,'test requires DeepSpeed' )(_snake_case )
def 					lowerCamelCase   (     _snake_case ):
    return unittest.skipUnless(is_torch_version('>='    ,'1.12.0' )    ,'test requires torch version >= 1.12.0' )(_snake_case )
def 					lowerCamelCase   (     _snake_case=None    ,_snake_case=None ):
    if test_case is None:
        return partial(_snake_case    ,version=_snake_case )
    return unittest.skipUnless(is_torch_version('>='    ,_snake_case )    ,F'''test requires torch version >= {version}''' )(_snake_case )
def 					lowerCamelCase   (     _snake_case ):
    return unittest.skipUnless(is_tensorboard_available()    ,'test requires Tensorboard' )(_snake_case )
def 					lowerCamelCase   (     _snake_case ):
    return unittest.skipUnless(is_wandb_available()    ,'test requires wandb' )(_snake_case )
def 					lowerCamelCase   (     _snake_case ):
    return unittest.skipUnless(is_comet_ml_available()    ,'test requires comet_ml' )(_snake_case )


UpperCamelCase__          =	(
    any([is_wandb_available(), is_tensorboard_available()]) and not is_comet_ml_available()
)
def 					lowerCamelCase   (     _snake_case ):
    return unittest.skipUnless(
        _atleast_one_tracker_available    ,'test requires at least one tracker to be available and for `comet_ml` to not be installed'    ,)(_snake_case )





class 				a			(					unittest.TestCase      ):
      UpperCamelCase							:   str           =     True



      @classmethod
      def  __snake_case							(   cls      ):
          UpperCAmelCase__	:      List[Any]     							=					tempfile.mkdtemp()



      @classmethod
      def  __snake_case							(   cls      ):
          if os.path.exists(cls.tmpdir      ):
              shutil.rmtree(cls.tmpdir      )



      def  __snake_case							(   self      ):
          if self.clear_on_setup:
              for path in Path(self.tmpdir      ).glob('**/*'      ):
                  if path.is_file():
                      path.unlink()
                  elif path.is_dir():
                      shutil.rmtree(UpperCamelCase_      )





class 				a			(					unittest.TestCase      ):



      def  __snake_case							(   self      ):
          super().tearDown()
          # Reset the state of the AcceleratorState singleton.
          AcceleratorState._reset_state()
          PartialState._reset_state()





class 				a			(					unittest.TestCase      ):



      def  __snake_case							(   self     ,	UpperCamelCase_      ):
          UpperCAmelCase__	:      List[Any]     							=					mocks if isinstance(UpperCamelCase_     ,	(tuple, list)      ) else [mocks]
          for m in self.mocks:
              m.start()
              self.addCleanup(m.stop      )




def 					lowerCamelCase   (     _snake_case ):
    UpperCAmelCase__	:      Tuple     							=					AcceleratorState()
    UpperCAmelCase__	:      Optional[Any]     							=					tensor[None].clone().to(state.device )
    UpperCAmelCase__	:      Dict     							=					gather(_snake_case ).cpu()
    UpperCAmelCase__	:      Any     							=					tensor[0].cpu()
    for i in range(tensors.shape[0] ):
        if not torch.equal(tensors[i]    ,_snake_case ):
            return False
    return True





class 				a			:



      def __init__(   self     ,	UpperCamelCase_     ,	UpperCamelCase_     ,	UpperCamelCase_      ):
          UpperCAmelCase__	:      Optional[int]     							=					returncode
          UpperCAmelCase__	:      Optional[int]     							=					stdout
          UpperCAmelCase__	:      Optional[int]     							=					stderr




async def 					lowerCamelCase   (     _snake_case    ,_snake_case ):
    while True:
        UpperCAmelCase__	:      int     							=					await stream.readline()
        if line:
            callback(_snake_case )
        else:
            break
async def 					lowerCamelCase   (     _snake_case    ,_snake_case=None    ,_snake_case=None    ,_snake_case=None    ,_snake_case=False    ,_snake_case=False ):
    if echo:
        print('\nRunning: '    ,' '.join(_snake_case ) )

    UpperCAmelCase__	:      Tuple     							=					await asyncio.create_subprocess_exec(
        cmd[0]    ,*cmd[1:]    ,stdin=_snake_case    ,stdout=asyncio.subprocess.PIPE    ,stderr=asyncio.subprocess.PIPE    ,env=_snake_case    ,)

    # note: there is a warning for a possible deadlock when using `wait` with huge amounts of data in the pipe
    # https://docs.python.org/3/library/asyncio-subprocess.html#asyncio.asyncio.subprocess.Process.wait
    #
    # If it starts hanging, will need to switch to the following code. The problem is that no data
    # will be seen until it's done and if it hangs for example there will be no debug info.
    # out, err = await p.communicate()
    # return _RunOutput(p.returncode, out, err)

    UpperCAmelCase__	:      List[str]     							=					[]
    UpperCAmelCase__	:      List[Any]     							=					[]

    def tee(_snake_case    ,_snake_case    ,_snake_case    ,_snake_case="" ):
        UpperCAmelCase__	:      Tuple     							=					line.decode('utf-8' ).rstrip()
        sink.append(_snake_case )
        if not quiet:
            print(_snake_case    ,_snake_case    ,file=_snake_case )

    # XXX: the timeout doesn't seem to make any difference here
    await asyncio.wait(
        [
            asyncio.create_task(_read_stream(p.stdout    ,lambda _snake_case : tee(_snake_case    ,_snake_case    ,sys.stdout    ,label='stdout:' ) ) ),
            asyncio.create_task(_read_stream(p.stderr    ,lambda _snake_case : tee(_snake_case    ,_snake_case    ,sys.stderr    ,label='stderr:' ) ) ),
        ]    ,timeout=_snake_case    ,)
    return _RunOutput(await p.wait()    ,_snake_case    ,_snake_case )
def 					lowerCamelCase   (     _snake_case    ,_snake_case=None    ,_snake_case=None    ,_snake_case=180    ,_snake_case=False    ,_snake_case=True ):
    UpperCAmelCase__	:      List[Any]     							=					asyncio.get_event_loop()
    UpperCAmelCase__	:      Optional[Any]     							=					loop.run_until_complete(
        _stream_subprocess(_snake_case    ,env=_snake_case    ,stdin=_snake_case    ,timeout=_snake_case    ,quiet=_snake_case    ,echo=_snake_case ) )

    UpperCAmelCase__	:      Union[str, Any]     							=					' '.join(_snake_case )
    if result.returncode > 0:
        UpperCAmelCase__	:      Tuple     							=					'\n'.join(result.stderr )
        raise RuntimeError(
            F'''\'{cmd_str}\' failed with returncode {result.returncode}\n\n'''
            F'''The combined stderr from workers follows:\n{stderr}''' )

    return result





class 				a			(					lowercase      ):
      pass




def 					lowerCamelCase   (     _snake_case    ,_snake_case=False ):
    try:
        UpperCAmelCase__	:      Dict     							=					subprocess.check_output(_snake_case    ,stderr=subprocess.STDOUT )
        if return_stdout:
            if hasattr(_snake_case    ,'decode' ):
                UpperCAmelCase__	:      str     							=					output.decode('utf-8' )
            return output
    except subprocess.CalledProcessError as e:
        raise SubprocessCallException(
            F'''Command `{' '.join(_snake_case )}` failed with the following error:\n\n{e.output.decode()}''' ) from e






from __future__ import annotations

from typing import Any


def A    (							__UpperCamelCase       )    ->   int:
			if not postfix_notation:
						return 0

			A__	  =     {'+', '-', '*', '/'}
			A__	  =     []

			for token in postfix_notation:
						if token in operations:
									A__  ,			A__	  =     stack.pop(), stack.pop()
									if token == "+":
												stack.append(a + b       )
									elif token == "-":
												stack.append(a - b       )
									elif token == "*":
												stack.append(a * b       )
									else:
												if a * b < 0 and a % b != 0:
															stack.append(a // b + 1       )
												else:
															stack.append(a // b       )
						else:
									stack.append(int(__UpperCamelCase       )       )

			return stack.pop()


if __name__ == "__main__":
							import doctest

							doctest.testmod()




