擅长:python、mysql、java
<p>String的<code>rstrip</code>函数可以选择获取要删除的字符列表。你知道吗</p>
<pre><code>rstrip(...)
S.rstrip([chars]) -> string or unicode
Return a copy of the string S with trailing whitespace removed.
If chars is given and not None, remove characters in chars instead.
If chars is unicode, S will be converted to unicode before stripping
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