from .balanced_parentheses import balanced_parentheses
from .stack import Stack
def 					UpperCamelCase__		(							A__       )  ->   int:
				return {"+": 1, "-": 1, "*": 2, "/": 2, "^": 3}.get(A__     ,					-1       )
def 					UpperCamelCase__		(							A__       )  ->   str:
				if not balanced_parentheses(A__       ):
								raise ValueError('Mismatched parentheses'       )
				snake_case__   :      Stack[str]   				= Stack()
				snake_case__   :      List[str]   				= []
				for char in expression_str:
								if char.isalpha() or char.isdigit():
												postfix.append(A__       )
								elif char == "(":
												stack.push(A__       )
								elif char == ")":
												while not stack.is_empty() and stack.peek() != "(":
																postfix.append(stack.pop()       )
												stack.pop()
								else:
												while not stack.is_empty() and precedence(A__       ) <= precedence(stack.peek()       ):
																postfix.append(stack.pop()       )
												stack.push(A__       )
				while not stack.is_empty():
								postfix.append(stack.pop()       )
				return " ".join(A__       )


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

				testmod()
				lowerCAmelCase__	:  str						=  '''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))



from typing import TYPE_CHECKING

from ...utils import (
    OptionalDependencyNotAvailable,
    _LazyModule,
    is_flax_available,
    is_sentencepiece_available,
    is_tf_available,
    is_tokenizers_available,
    is_torch_available,
)


lowerCAmelCase__	:  int						=  {
    '''configuration_switch_transformers''': [
        '''SWITCH_TRANSFORMERS_PRETRAINED_CONFIG_ARCHIVE_MAP''',
        '''SwitchTransformersConfig''',
        '''SwitchTransformersOnnxConfig''',
    ]
}

try:
				if not is_torch_available():
								raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
				pass
else:
				lowerCAmelCase__	:  List[Any]						=  [
				    '''SWITCH_TRANSFORMERS_PRETRAINED_MODEL_ARCHIVE_LIST''',
				    '''SwitchTransformersEncoderModel''',
				    '''SwitchTransformersForConditionalGeneration''',
				    '''SwitchTransformersModel''',
				    '''SwitchTransformersPreTrainedModel''',
				    '''SwitchTransformersTop1Router''',
				    '''SwitchTransformersSparseMLP''',
				]


if TYPE_CHECKING:
				from .configuration_switch_transformers import (
				    SWITCH_TRANSFORMERS_PRETRAINED_CONFIG_ARCHIVE_MAP,
				    SwitchTransformersConfig,
				    SwitchTransformersOnnxConfig,
				)

				try:
								if not is_torch_available():
												raise OptionalDependencyNotAvailable()
				except OptionalDependencyNotAvailable:
								pass
				else:
								from .modeling_switch_transformers import (
								    SWITCH_TRANSFORMERS_PRETRAINED_MODEL_ARCHIVE_LIST,
								    SwitchTransformersEncoderModel,
								    SwitchTransformersForConditionalGeneration,
								    SwitchTransformersModel,
								    SwitchTransformersPreTrainedModel,
								    SwitchTransformersSparseMLP,
								    SwitchTransformersTopaRouter,
								)


else:
				import sys

				lowerCAmelCase__	:  Union[str, Any]						=  _LazyModule(__name__, globals()['''__file__'''], _import_structure, module_spec=__spec__)


