lowerCamelCase_				:		Dict       						=       {
    """+""": lambda x, y: x + y,
    """-""": lambda x, y: x - y,
    """*""": lambda x, y: x * y,
    """/""": lambda x, y: x / y,
}
def 							lowerCAmelCase(	__lowerCamelCase						):
					return c.isdigit()
def 							lowerCAmelCase(	__lowerCamelCase						):
					__a							=   []

					# iterate over the string in reverse order
					for c in expression.split()[::-1]:
										# push operand to stack
										if is_operand(__lowerCamelCase						):
															stack.append(int(__lowerCamelCase						)						)

										else:
															# pop values from stack can calculate the result
															# push the result onto the stack again
															__a							=   stack.pop()
															__a							=   stack.pop()
															stack.append(calc[c](__lowerCamelCase      ,				__lowerCamelCase						)						)

					return stack.pop()


# Driver code
if __name__ == "__main__":
	lowerCamelCase_				:		Tuple       						=       """+ 9 * 2 6"""
	print(evaluate(test_expression))

	lowerCamelCase_				:		str       						=       """/ * 10 2 + 4 1 """
	print(evaluate(test_expression))





from typing import TypeVar

from .arrow_dataset import Dataset, _split_by_node_map_style_dataset
from .iterable_dataset import IterableDataset, _split_by_node_iterable_dataset


lowerCamelCase_				:		List[Any]       						=       TypeVar("""DatasetType""", Dataset, IterableDataset)
def 							lowerCAmelCase(	__lowerCamelCase      ,				__lowerCamelCase      ,				__lowerCamelCase						):
					if isinstance(__lowerCamelCase      ,				__lowerCamelCase						):
										return _split_by_node_map_style_dataset(__lowerCamelCase      ,				rank=__lowerCamelCase      ,				world_size=__lowerCamelCase						)
					else:
										return _split_by_node_iterable_dataset(__lowerCamelCase      ,				rank=__lowerCamelCase      ,				world_size=__lowerCamelCase						)




