python字符串正则表达式

Python字符串正则表达式是通过字符串字面量的形式来描述特定的字符串模式，它可以通过标准包re提供的功能来实现许多复杂的字符串操作。正则表达式可以用于字符串的查找、分割、大小写转换、修剪、检测开头结尾、排版等处理。在Python中，使用re包提供的正则表达式匹配操作可以方便地进行字符串模式的匹配和处理。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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