正则表达式以匹配python中的重复组

Question

我有一个country.txt文件，其中包含以下示例文本：

[Country "Kenya"]\n[CapitalCity "Nairobi"]\n\n
[Country "Uganda"]\n[CapitalCity "Kampala"]\n\n
[Country "Tanzania"]\n[CapitalCity "Dodoma"]\n\n

该国家最多可以有20个属性。 为了简单起见，我仅包括Country和CapitalCity。 我需要一个可在python中工作的正则表达式，以返回上面的示例数据：

a) n matches, in the above case n=3
b) Each match should have m groups, in this case m=2: Country and CapitalCity

我已经阅读了https://www.regular-expressions.info/captureall.html，但似乎无法使它适用于我的用例。

我已经试过了

(\[([A-Za-z]+)\s\"([^\"]*)\"\]\\n\\n)+

在这里https://regex101.com/r/cujIDd/1，但它没有给我国家。

编辑 ：预期的输入和输出

示例1：输入

[Country "Kenya"]\n[CapitalCity "Nairobi"]\n\n
[Country "Uganda"]\n[CapitalCity "Kampala"]\n\n
[Country "Tanzania"]\n[CapitalCity "Dodoma"]\n\n

预期产量

matches: 3
match 1: Country: Kenya
         CapitalCity: Nairobi
match 2: Country: Uganda
         CapitalCity: Kampala
match 3: Country: Tanzania
         CapitalCity: Dodoma

示例2：输入

[Country "Kenya"]\n[CapitalCity "Nairobi"]\n[President "Kenyatta"]\n\n
[Country "Uganda"]\n[CapitalCity "Kampala"]\n[President "Museveni"]\n\n
[Country "Tanzania"]\n[CapitalCity "Dodoma"]\n[President "Magufuli"]\n\n

预期产量

matches: 3
match 1: Country: Kenya
         CapitalCity: Nairobi
         President: Kenyatta
match 2: Country: Uganda
         CapitalCity: Kampala
         President: Museveni
match 3: Country: Tanzania
         CapitalCity: Dodoma
         President: Magufuli

示例3：输入

[Country "Kenya"]\n[CapitalCity "Nairobi"]\n[President "Kenyatta"]\n[Continent "Africa"]\n\n
[Country "Uganda"]\n[CapitalCity "Kampala"]\n[President "Museveni"]\n[Continent "Africa"]\n\n
[Country "Tanzania"]\n[CapitalCity "Dodoma"]\n[President "Magufuli"]\n[Continent "Africa"]\n\n

预期产量

matches: 3
match 1: Country: Kenya
         CapitalCity: Nairobi
         President: Kenyatta
         Continent: Africa
match 2: Country: Uganda
         CapitalCity: Kampala
         President: Museveni
         Continent: Africa
match 3: Country: Tanzania
         CapitalCity: Dodoma
         President: Magufuli
         Continent: Africa

你得到了流

Answer 1

您可能会使用类似于以下内容的东西：

regex = r"^[^\"]*\"(\w+)\"[^\"]+\"(\w+)\"[^\"].*"
subst = "\\1, \\2"

result = re.sub(regex, subst, test_str, 0, re.MULTILINE)

if result:
    print (result)

输出 ：

Kenya, Nairobi
Uganda, Kampala
Tanzania, Dodoma

范例 ：

https://regex101.com/r/cujIDd/6

Answer 2

您可以删除外部重复组()+ ，并使第二个\\\\n可选(?:\\\\n)? ：

在regex101.com上查看使用中的正则表达式

\\[([A-Za-z]+)\\s\\"([^\\"]*)\\"\\]\\\\n(?:\\\\n)?

如果只想捕获前两个属性，则可以使用^和$锚点：

^\\[([A-Za-z]+)\\s*\\"([^\\"]+)\\"\\]\\\\n\\[([A-Za-z]+)\\s*\\"([^\\"]+)\\"\\].*$

在regex101.com上查看使用中的正则表达式