Python中%怎么格式化字符串？

回答：

%运算符（求余符）也可用于字符串格式化。给定'string' % values，则string中的%实例会以零个或多个values元素替换。此操作被称为字符串插值，示例如下：

>>> import math

>>> print('The value of pi is approximately %5.3f.' % math.pi)

The value of pi is approximately 3.142.