s1 = 72
s2 = 85
r = (s2-s1) / s1
print('%.2f' % r)
print('小明成绩从去年的{}分,到现在{}分,提升了{:.2f}%'.format(s1, s2, r))
print('小明成绩从去年的%d分,到现在%d分,提升了%.2f%%'%(s1, s2, r))
print(f'小明成绩从去年的{s1}分,到现在{s2}分,提升了{r:.2f}%')
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露心
s1 = 72
s2 = 85
r = (s2-s1) / s1
print('%.2f' % r)
print('小明成绩从去年的{}分,到现在{}分,提升了{:.2f}%'.format(s1, s2, r))
print('小明成绩从去年的%d分,到现在%d分,提升了%.2f%%'%(s1, s2, r))
print(f'小明成绩从去年的{s1}分,到现在{s2}分,提升了{r:.2f}%')