python - 在不知道变量名称的情况下返回正则表达式变量

Question

我有这行代码:

hdfs_regex = re.compile(r'\s+(?P<unmatched>\d+)\s+\/\s+(?P<total>\d+)')

我运行一个文件并使用:

results = re.search(hdfs_regex, line)

查找 line 中的部分与我的正则表达式匹配。匹配后，有没有办法返回每个找到的匹配的正则表达式变量？

有没有找到返回的地方group不知道正则表达式变量名称？

伪代码可能看起来像这样

grouped_val = [i for i in results.grouped()]

哪里results.grouped()是一个可迭代对象，我可以使用它来检索找到的值，而无需知道变量名称

Answer 1

您可以使用groups()返回一个包含匹配模式的所有子组的元组:

>>> m = re.search(r"(\d+)\.?(\d+)?", "24.13244")
>>> m.groups()
('24', '13244')

groups([default]) Return a tuple containing all the subgroups of the match, from 1 up to however many groups are in the pattern. The default argument is used for groups that did not participate in the match; it defaults to None. (Incompatibility note: in the original Python 1.5 release, if the tuple was one element long, a string would be returned instead. In later versions (from 1.5.1 on), a singleton tuple is returned in such cases.)