擅长:python、mysql、java
<p><code>{0}/{1}</code>应该是占位符</p>
<p><a href="https://www.w3schools.com/python/ref_string_format.asp" rel="nofollow noreferrer">Python String format() Method:The Placeholders</a>
<a href="https://i.stack.imgur.com/l6Dh7.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/l6Dh7.png" alt="enter image description here"/></a></p>