[英]Looping through python regex matches
This has to be easier than what I am running into.这必须比我遇到的更容易。 My problem is turning a string that looks like this:
我的问题是转动一个看起来像这样的字符串:
ABC12DEF3G56HIJ7
into进入
12 * ABC
3 * DEF
56 * G
7 * HIJ
And I can't, for the life of me, design a correct set of loops using REGEX matching.而且我一生都无法使用 REGEX 匹配设计一组正确的循环。 The crux of the issue is that the code has to be completely general because I cannot assume how long the
[AZ]
fragments will be, nor how long the [0-9]
fragments will be.问题的关键是代码必须是完全通用的,因为我无法假设
[AZ]
片段的长度,也无法假设[0-9]
片段的长度。
Thank you for any assistance!感谢您的任何帮助!
It is better to use re.finditer
if your dataset is large because that reduces memory consumption ( findall()
return a list of all results, finditer()
finds them one by one).如果您的数据集很大,最好使用
re.finditer
,因为这样可以减少内存消耗( findall()
返回所有结果的列表, finditer()
一个一个地找到它们)。
import re
s = "ABC12DEF3G56HIJ7"
pattern = re.compile(r'([A-Z]+)([0-9]+)')
for m in re.finditer(pattern, s):
print m.group(2), '*', m.group(1)
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