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匹配两个数字数字的正则表达式,以随机字符串中的两个数字数字匹配,不匹配 3 或更多数字的数字
原标题:regular expression to match two digits numbers in a random string without matching 3 or more digit numbers
  • 时间:2012-05-25 13:20:58
  •  标签:
  • python
  • regex

我需要从一个字母数字字符串中挑选出所有两个数字数字。

例如: < code> input = abc123# d$45_abrt&89*

output = [45、89]

当我这样做时,它会从三个数字中取出两个数字,甚至从三个数字中取出两个数字。

数字可以是字符串中的任意位置 - 开始、 中间或结束。 另外, 锚可以是任何东西( 当然, 数字除外 ) 。

请建议使用正则或使用其他字符串操作是否更好 。

如果提供 Python 代码, 将会很有帮助 。

最佳回答

您需要 < a href=>" "http://www. regular- expressions.info/ looking around.html" rel = “ no follow” > 查看以下说法 :

>>> re.findall(r"(?<!d)dd(?!d)", "abc123#d$45^abrt&89*")
[ 45 ,  89 ]
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