字符串百分号例子

tp1="i am %s"%"alex"

print(tp1)

tp1="i am %s age %d"%("alex",18)

print(tp1)

还有一种形式如下：

tp1="i am %(name)s age %(age)d"%{"name":"alex","age":18}

print(tp1)

tp1="percent %.2f"% 99.97623

print(tp1)