

from .balanced_parentheses import balanced_parentheses
from .stack import Stack

def 			snake_case__    (					SCREAMING_SNAKE_CASE_	:					str    ):



     '''simple docstring'''





     return {"+": 1, "-": 1, "*": 2, "/": 2, "^": 3}.get(SCREAMING_SNAKE_CASE_			,  -1    )

def 			snake_case__    (					SCREAMING_SNAKE_CASE_	:					str    ):



     '''simple docstring'''





     if not balanced_parentheses(SCREAMING_SNAKE_CASE_    ):
          raise ValueError('Mismatched parentheses'    )
     lowercase__					:     Stack[str]   = Stack()
     lowercase__					:     Any   = []
     for char in expression_str:
          if char.isalpha() or char.isdigit():
               postfix.append(SCREAMING_SNAKE_CASE_    )
          elif char == "(":
               stack.push(SCREAMING_SNAKE_CASE_    )
          elif char == ")":
               while not stack.is_empty() and stack.peek() != "(":
                    postfix.append(stack.pop()    )
               stack.pop()
          else:
               while not stack.is_empty() and precedence(SCREAMING_SNAKE_CASE_    ) <= precedence(stack.peek()    ):
                    postfix.append(stack.pop()    )
               stack.push(SCREAMING_SNAKE_CASE_    )
     while not stack.is_empty():
          postfix.append(stack.pop()    )
     return " ".join(SCREAMING_SNAKE_CASE_    )


if __name__ == "__main__":
       from doctest import testmod

       testmod()
       snake_case_    						=				'''a+b*(c^d-e)^(f+g*h)-i'''

       print('''Infix to Postfix Notation demonstration:\n''')
       print('''Infix notation: ''' + expression)
       print('''Postfix notation: ''' + infix_to_postfix(expression))




# as due to their complexity multi-gpu tests could impact other tests, and to aid debug we have those in a separate module.

import os
import sys

from transformers.testing_utils import TestCasePlus, execute_subprocess_async, get_gpu_count, require_torch_gpu, slow

from .utils import load_json


class    SCREAMING_SNAKE_CASE__      (__snake_case  ):





    @classmethod
    def    snake_case_       (   cls):
         return cls





    @slow
    @require_torch_gpu
    def    snake_case_       (   self):
         lowercase__					:     List[Any]   = self.get_auto_remove_tmp_dir()
         lowercase__					:     List[str]   = f"""
            --model_name Helsinki-NLP/opus-mt-en-ro
            --save_dir {output_dir}
            --data_dir {self.test_file_dir_str}/test_data/wmt_en_ro
            --num_beams 2
            --task translation
        """.split()

         # we want this test to run even if there is only one GPU, but if there are more we use them all
         lowercase__					:     int   = get_gpu_count()
         lowercase__					:     Tuple   = f"""
            -m torch.distributed.launch
            --nproc_per_node={n_gpu}
            {self.test_file_dir}/run_distributed_eval.py
        """.split()
         lowercase__					:     Optional[Any]   = [sys.executable] + distributed_args + args
         execute_subprocess_async(a		,     env=self.get_env())

         lowercase__					:     str   = os.path.join(a		,     'test_bleu.json')
         lowercase__					:     List[str]   = load_json(a)
         # print(metrics)
         self.assertGreaterEqual(metrics['bleu']		,     25)

