運行時怎么是空白的呀？
def power(x, n=2):
? ?s = 1
? ?while n > 0:
? ? ? ?n = n - 1
? ? ? ?s = s * x
? ?return s
xiong_betty123
2016-12-19
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2016-12-19
def power(x, n=2):
? ?s = 1
? ?while n > 0:
? ? ? ?n = n - 1
? ? ? ?s = s * x
? ?return s
? ?
print power(5)
親測可以