python %s 适合于多种类型 数字 字符串 列表 等

>>> a = 1
>>> b = 1.1
>>> c = 'hello'
>>> print 'Integer: %s; Float: %s; String: %s' % (a, b, c)
Integer: 1; Float: 1.1; String: hello

https://stackoverflow.com/questions/14506430/string-formatting-in-python-can-i-use-s-for-all-types

>>> a=[1,2,3,4]
>>> print "%s test"%a
[1, 2, 3, 4] test

 using %s automatically calls str on the variable.  Since everything has __str__ defined, you should be able to do this without a problem