相关疑难解决方法(0)

我有以下代码

test = "have it break."
selectiveEscape = "Print percent % in sentence and not %s" % test

print(selectiveEscape)

我想获得输出:

Print percent % in sentence and not have it break.

实际发生了什么:

    selectiveEscape = "Use percent % in sentence and not %s" % test
TypeError: %d format: a number is required, not str

在'%'和'%''中有什么区别,当在mysql where子句中使用'LIKE'时？

select * from `wp_users` u where u.user_nicename like "%lastuser%"

VS

select * from `wp_users` u where u.user_nicename like "%%lastuser%%"