正则表达式以逗号分隔，但忽略冒号附近的逗号前导词

Question

我正在尝试使用 python 用逗号分隔字符串，但允许用户在某些密钥对中包含逗号。 这是我正在使用的字符串的两个示例：

title.search:The relation between visualization size, grouping, and user performance,publication_year:2020

author.id:c33432,title.search:The relation between visualization size, grouping, and user performance,publication_year:2020

我希望它变成：

["title.search:The relation between visualization size, grouping, and user performance", "publication_year:2020"]

["author.id:c33432", "title.search:The relation between visualization size, grouping, and user performance", "publication_year:2020"]

对我有帮助的是，冒号之前的部分（键）将始终以三种格式之一编写，例如：

1. 类型
2. 作者.id
3. author.institutions.country_code

所以它可以是一个单词，两个单词之间用句点隔开，或者三个单词用句点隔开。

关于这是否可能的任何想法？

Answer 1

据我所见，您试图在文本中用逗号分隔，在这种情况下，正则表达式是\w,\w 。

Answer 2

请您尝试以下方法：

#!/usr/bin/python

import re

s = ['title.search:The relation between visualization size, grouping, and user performance,publication_year:2020',
'author.id:c33432,title.search:The relation between visualization size, grouping, and user performance,publication_year:2020']

for str in s:
    m = re.split(r',(?=\s*[\w.]+:)', str)
    print(m)

Output：

['title.search:The relation between visualization size, grouping, and user performance', 'publication_year:2020']
['author.id:c33432', 'title.search:The relation between visualization size, grouping, and user performance', 'publication_year:2020']

正则表达式,(?=\s*[\w.]+:)匹配逗号后跟

• 零个或多个空白字符
• 一系列单词字符和/或点字符
• 冒号字符

为了。
然后将字符串拆分为满足上述条件的逗号。