


__lowerCAmelCase									=				{
    '''+''': lambda x, y: x + y,
    '''-''': lambda x, y: x - y,
    '''*''': lambda x, y: x * y,
    '''/''': lambda x, y: x / y,
}




def   snake_case_	(    snake_case	)    ->							Tuple:
       return c.isdigit()




def   snake_case_	(    snake_case	)    ->							Tuple:
       lowercase__:  List[Any]         =  []

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

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

       return stack.pop()


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

 __lowerCAmelCase									=				'''/ * 10 2 + 4 1 '''
 print(evaluate(test_expression))






def   snake_case_	(    snake_case	)    ->							str:
       lowercase__:  Optional[Any]         =  1
       lowercase__:  Optional[Any]         =  0
       lowercase__:  int         =  1
       lowercase__:  Any         =  1
       lowercase__:  Optional[Any]         =  3
       lowercase__:  List[str]         =  3
       lowercase__:  Optional[Any]         =  limit
       lowercase__:  List[Any]         =  0

       lowercase__:  int         =  ''
       while counter != decimal + 1:
              if 4 * q + r - t < n * t:
                     result += str(snake_case	)
                     if counter == 0:
                            result += "."

                     if decimal == counter:
                            break

                     counter += 1
                     lowercase__:  List[Any]         =  10 * (r - n * t)
                     lowercase__:  int         =  ((10 * (3 * q + r)) // t) - 10 * n
                     q *= 10
                     lowercase__:  Any         =  nr
              else:
                     lowercase__:  List[str]         =  (2 * q + r) * l
                     lowercase__:  Tuple         =  (q * (7 * k) + 2 + (r * l)) // (t * l)
                     q *= k
                     t *= l
                     l += 2
                     k += 1
                     lowercase__:  Dict         =  nn
                     lowercase__:  Optional[int]         =  nr
       return result




def   snake_case_	(    )    ->							None:
       print(f'{calculate_pi(50	) = }'	)
       import doctest

       doctest.testmod()


if __name__ == "__main__":
 main()


