>>2**8
结果256
那反过来去算多少次方等于256
结果256
那反过来去算多少次方等于256
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aaaa007cnNov 7, 2014
1
用对数
log(a^b) = b * log(a) |
 |
2
import math
print math.log(64,2) # math.log(x, base) |
1
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