给定一个double类型的浮点数base和int类型的整数exponent。求base的exponent次方。

1 # -*- coding:utf-8 -*- 2 class Solution: 3     def Power(self, base, exponent): 4         if exponent == 0: 5             return 1 6         if exponent == 1: 7             return base 8         op = False 9         if exponent < 0:10             op = True11             exponent = -exponent12         result = 113         if exponent % 2 == 0:14             result = self.Power(base * base,exponent // 2)15         else:16             result = self.Power(base * base,exponent // 2) * base17         if op:18             result = 1 / result19         return result20         # write code here