s1=72 s2=85 r=(s2-s1)/s1 print('%.3s%%'%r)
上个我理解错了,以为字符串是%s 然而并不是,,,,
s1=72 s2=85 r=(s2-s1)/s1*100 print('%.1f%%'%r)
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龅牙牧师
-- coding: utf-8 --
s1=72 s2=85 r=(s2-s1)/s1 print('%.3s%%'%r)