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云计算开发实例：Python3使用正则表达式提取字符串中的 URL

来源：鹿车共挽网编辑：热点时间：2026-11-14

如何在Python3中判断字符串长度，首云计先给定一个字符串，里面包含 URL 地址，需要我们使算开用正则表达式来获取字符串的 URL。

实例

?发实: 说明：

匹配 x 但是不记住匹配项。这种括号叫作非例：捕获括号，使得你能够定义与正则表达式运算符Py一起使用的子表达式。看看这个例子 /(?:foo)th{1,2}/。如果表达式是 /foo&on#123;1,2}/，{1,2} 将只3使应用于 'foo' 的最后一个字符 'o'。如用正果使用非捕获括号，则 {1,2} 会应用于整则表个 'foo' 单词。

执行以上代码输出结果为：

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