s1 = 72 s2 = 72 r = (85-72)/72*100 print('小明的成绩提升了 %s%%' % r)
r = (85-72)/72*100 print('小明的成绩提升了 %.4s%%' % r)
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用户0876205216
s1 = 72 s2 = 72 r = (85-72)/72*100 print('小明的成绩提升了 %s%%' % r)