在正则表达式中排除组
[英]Exclude group in Regex expression
问题描述
I would like to match the power value of a certain number using Regex: Exemple: A^2 --> num_pow = 2
我想使用正则表达式匹配某个数字的幂值：示例：A^2 --> num_pow = 2
power = "(\^[+-]?[1-9]\d*)"
num_pow1 = "(?P<num_pow1>" + power + ")"
num_pow2 = "(?P<num_pow2>" + power + ")"
currently this code will return "^2" rather than "2".目前此代码将返回“^2”而不是“2”。 I tried using "?:" without any sucess.我尝试使用“？：”没有任何成功。
1 个解决方案
解决方案1
-1 2022-07-06 10:15:14
power = "\^([+-]?[1-9]\d*)"
num_pow1 = "(?P<num_pow1>" + power.group(1) + ")"
num_pow2 = "(?P<num_pow2>" + power.group(1) + ")"
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