




import os
import sys
import unittest


_lowerCamelCase     :		Any								=      os.path.abspath(os.path.dirname(os.path.dirname(os.path.dirname(__file__))))
sys.path.append(os.path.join(git_repo_path, """utils"""))

import check_dummies  # noqa: E402
from check_dummies import create_dummy_files, create_dummy_object, find_backend, read_init  # noqa: E402


# Align TRANSFORMERS_PATH in check_dummies with the current path
_lowerCamelCase     :		Dict								=      os.path.join(git_repo_path, """src""", """transformers""")

_lowerCamelCase     :		Optional[Any]								=      """
{0} = None
"""

_lowerCamelCase     :		Dict								=      """
class {0}(metaclass=DummyObject):
    _backends = {1}

    def __init__(self, *args, **kwargs):
        requires_backends(self, {1})
"""


_lowerCamelCase     :		Union[str, Any]								=      """
def {0}(*args, **kwargs):
    requires_backends({0}, {1})
"""


class     UpperCamelCase_   (			unittest.TestCase					):

    '''simple docstring'''






    def 	SCREAMING_SNAKE_CASE							(      self				:     Union[str, Any])						->List[Any]:





           '''simple docstring'''

           A__							=   find_backend('''    _import_structure["models.albert"].append("AlbertTokenizerFast")''')
           self.assertIsNone(UpperCAmelCase__)

           A__							=   find_backend('''    if not is_tokenizers_available():''')
           self.assertEqual(UpperCAmelCase__ ,			'''tokenizers''')

           A__							=   find_backend('''    if not is_tensorflow_text_available():''')
           self.assertEqual(UpperCAmelCase__ ,			'''tensorflow_text''')

           A__							=   find_backend('''    if not (is_sentencepiece_available() and is_tokenizers_available()):''')
           self.assertEqual(UpperCAmelCase__ ,			'''sentencepiece_and_tokenizers''')

           A__							=   find_backend(
               '''    if not (is_sentencepiece_available() and is_tensorflow_text_available()):''')
           self.assertEqual(UpperCAmelCase__ ,			'''sentencepiece_and_tensorflow_text''')

           A__							=   find_backend(
               '''    if not (is_sentencepiece_available() and is_tokenizers_available() and is_vision_available()):''')
           self.assertEqual(UpperCAmelCase__ ,			'''sentencepiece_and_tokenizers_and_vision''')


    def 	SCREAMING_SNAKE_CASE							(      self				:     Tuple)						->Any:





           '''simple docstring'''

           A__							=   read_init()
           # We don't assert on the exact list of keys to allow for smooth grow of backend-specific objects
           self.assertIn('''torch''' ,			UpperCAmelCase__)
           self.assertIn('''tensorflow_text''' ,			UpperCAmelCase__)
           self.assertIn('''sentencepiece_and_tokenizers''' ,			UpperCAmelCase__)

           # Likewise, we can't assert on the exact content of a key
           self.assertIn('''BertModel''' ,			objects['''torch'''])
           self.assertIn('''TFBertModel''' ,			objects['''tf'''])
           self.assertIn('''FlaxBertModel''' ,			objects['''flax'''])
           self.assertIn('''BertModel''' ,			objects['''torch'''])
           self.assertIn('''TFBertTokenizer''' ,			objects['''tensorflow_text'''])
           self.assertIn('''convert_slow_tokenizer''' ,			objects['''sentencepiece_and_tokenizers'''])


    def 	SCREAMING_SNAKE_CASE							(      self				:     Optional[Any])						->List[Any]:





           '''simple docstring'''

           A__							=   create_dummy_object('''CONSTANT''' ,			'''\'torch\'''')
           self.assertEqual(UpperCAmelCase__ ,			'''\nCONSTANT = None\n''')

           A__							=   create_dummy_object('''function''' ,			'''\'torch\'''')
           self.assertEqual(
               UpperCAmelCase__ ,			'''\ndef function(*args, **kwargs):\n    requires_backends(function, \'torch\')\n''')

           A__							=   '''
class FakeClass(metaclass=DummyObject):
    _backends = \'torch\'

    def __init__(self, *args, **kwargs):
        requires_backends(self, \'torch\')
'''
           A__							=   create_dummy_object('''FakeClass''' ,			'''\'torch\'''')
           self.assertEqual(UpperCAmelCase__ ,			UpperCAmelCase__)





    def 	SCREAMING_SNAKE_CASE							(      self				:     str)						->List[Any]:





           '''simple docstring'''

           A__							=   '''# This file is autogenerated by the command `make fix-copies`, do not edit.
from ..utils import DummyObject, requires_backends


CONSTANT = None


def function(*args, **kwargs):
    requires_backends(function, ["torch"])


class FakeClass(metaclass=DummyObject):
    _backends = ["torch"]

    def __init__(self, *args, **kwargs):
        requires_backends(self, ["torch"])
'''
           A__							=   create_dummy_files({'''torch''': ['''CONSTANT''', '''function''', '''FakeClass''']})
           self.assertEqual(dummy_files['''torch'''] ,			UpperCAmelCase__)








def SCREAMING_SNAKE_CASE    (	lowercase_						)       ->	str:



       """simple docstring"""

       A__							=   []
       A__							=   []
       A__							=   {
           '''^''': 3,
           '''*''': 2,
           '''/''': 2,
           '''%''': 2,
           '''+''': 1,
           '''-''': 1,
       }  # Priority of each operator
       A__							=   len(lowercase_						) if (len(lowercase_						) > 7) else 7

       # Print table header for output
       print(
           '''Symbol'''.center(8						)			,    '''Stack'''.center(lowercase_						)			,    '''Postfix'''.center(lowercase_						)			,    sep=''' | '''			,    )
       print('''-''' * (print_width * 3 + 7)						)

       for x in infix:
              if x.isalpha() or x.isdigit():
                     post_fix.append(lowercase_						)  # if x is Alphabet / Digit, add it to Postfix
              elif x == "(":
                     stack.append(lowercase_						)  # if x is "(" push to Stack
              elif x == ")":  # if x is ")" pop stack until "(" is encountered
                     while stack[-1] != "(":
                            post_fix.append(stack.pop()						)  # Pop stack & add the content to Postfix
                     stack.pop()
              else:
                     if len(lowercase_						) == 0:
                            stack.append(lowercase_						)  # If stack is empty, push x to stack
                     else:  # while priority of x is not > priority of element in the stack
                            while len(lowercase_						) > 0 and priority[x] <= priority[stack[-1]]:
                                   post_fix.append(stack.pop()						)  # pop stack & add to Postfix
                            stack.append(lowercase_						)  # push x to stack

              print(
                  x.center(8						)			,    (''''''.join(lowercase_						)).ljust(lowercase_						)			,    (''''''.join(lowercase_						)).ljust(lowercase_						)			,    sep=''' | '''			,    )  # Output in tabular format

       while len(lowercase_						) > 0:  # while stack is not empty
              post_fix.append(stack.pop()						)  # pop stack & add to Postfix
              print(
                  ''' '''.center(8						)			,    (''''''.join(lowercase_						)).ljust(lowercase_						)			,    (''''''.join(lowercase_						)).ljust(lowercase_						)			,    sep=''' | '''			,    )  # Output in tabular format

       return "".join(lowercase_						)  # return Postfix as str







def SCREAMING_SNAKE_CASE    (	lowercase_						)       ->	Optional[Any]:



       """simple docstring"""

       A__							=   list(infix[::-1]						)  # reverse the infix equation

       for i in range(len(lowercase_						)						):
              if infix[i] == "(":
                     A__							=   ''')'''  # change "(" to ")"
              elif infix[i] == ")":
                     A__							=   '''('''  # change ")" to "("

       return (infix_2_postfix(''''''.join(lowercase_						)						))[
           ::-1
       ]  # call infix_2_postfix on Infix, return reverse of Postfix


if __name__ == "__main__":
  _lowerCamelCase     :		List[str]								=       input("""\nEnter an Infix Equation = """)  # Input an Infix equation
  _lowerCamelCase     :		Dict								=       """""".join(Infix.split())  # Remove spaces from the input
  print("""\n\t""", Infix, """(Infix) -> """, infix_2_prefix(Infix), """(Prefix)""")


