text: #!/usr/bin/env python3
  # coding:utf-8
  
  
  class Solution:
      def Power(self, base, exponent):
          """
          @param: base: double
          @param: exponent: int
          """
          if exponent == 0:
              return 1
          if base == 0:
              return 0
  
          res = 1
          for _ in range(abs(exponent)):
              res *= base
          return 1 / res if exponent < 0 else res
  
  
  if __name__ == "__main__":
      s = Solution()
      print(s.Power(2, 0))
      print(s.Power(0, 2))
      print(s.Power(3.5, 2))
      print(s.Power(3.5, -2))
  