Python正则表达式获取两个子字符串之间的字符串 [英] Python Regex Get String Between Two Substrings

问题描述

首先，我知道这可能看起来像一个重复的问题，但是，我找不到解决我的问题的可行解决方案.

我有如下所示的字符串:

string = "api('randomkey123xyz987', 'key', 'text')"

我需要提取 randomkey123xyz987，它总是在 api(' 和 ',

之间

我打算为此使用 Regex，但是，我似乎遇到了一些麻烦.

这是我取得的唯一进步:

导入重新string = "api('randomkey123xyz987', 'key', 'text')"match = re.findall("\((.*?)\)", string)[0]打印匹配

以下代码返回'randomkey123xyz987', 'key', 'text'

我尝试使用 [^']，但我的猜测是我没有正确地将它插入到 re.findall 函数中.

我尝试的一切都失败了.

<小时>

更新:我目前的解决方法是使用 [2:-4]，但我仍然想避免使用 match[2:-4].

解决方案

如果字符串只包含一个实例，使用 re.search() 代替:

<预><代码>>>>进口重新>>>s = "api('randomkey123xyz987', 'key', 'text')">>>match = re.search(r"api\('([^']*)'", s).group(1)>>>打印匹配randomkey123xyz987

First off, I know this may seem like a duplicate question, however, I could find no working solution to my problem.

I have string that looks like the following:

string = "api('randomkey123xyz987', 'key', 'text')"

I need to extract randomkey123xyz987 which will always be between api(' and ',

I was planning on using Regex for this, however, I seem to be having some trouble.

This is the only progress that I have made:

import re
string = "api('randomkey123xyz987', 'key', 'text')"
match = re.findall("\((.*?)\)", string)[0]
print match

The following code returns 'randomkey123xyz987', 'key', 'text'

I have tried to use [^'], but my guess is that I am not properly inserting it into the re.findall function.

Everything that I am trying is failing.

---

Update: My current workaround is using [2:-4], but I would still like to avoid using match[2:-4].

解决方案

If the string contains only one instance, use re.search() instead:

>>> import re
>>> s = "api('randomkey123xyz987', 'key', 'text')"
>>> match = re.search(r"api\('([^']*)'", s).group(1)
>>> print match
randomkey123xyz987

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