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#1 Created at ... [Delete] [Delete and Lock User]

s1 = 72 s2 = 85 r = (85/72-1)*100 print('小明的成绩提高了','%.1f %%' % r )

#2 Created at ... [Delete] [Delete and Lock User]

请问下后面的%r什么意思呢？

#3 Created at ... [Delete] [Delete and Lock User]

就是输入r的内容啊，%r不在字符串理感觉应该相当于取得存放r的地址，然后输出

#4 Created at ... [Delete] [Delete and Lock User]

第一个 %.1f 意思是取小数点后一位的长度类型为 f(loat)也就是浮点型，带小数。 %%的意思是输出一个%符号。 %r 的意思是第一个中的 %取变量r的值。