Python正则findall无法匹配Unicode文本中所有期刊名称问题

Hey there! I see the problem you're hitting—your regex works perfectly on regex101 but only grabs the first match in Python. Let's break this down and fix it.

The Root Cause #

Your regex uses the ^ anchor, which by default only matches the start of the entire string in Python's re module. But regex101 automatically enables the Multiline mode for you behind the scenes, which makes ^ match the start of every line instead. That's why it works there but not locally.

The Solution #

Add the re.MULTILINE (or re.M for short) flag to your re.findall() call. This tells Python to treat each line's start as a valid position for the ^ anchor.

Here's your updated code:

import re

regex = r"^(\d+\)\s*\d+\.\s+)(.*?) ISSN"
# Combine re.IGNORECASE with re.MULTILINE using bitwise OR
matches = re.findall(regex, txt, re.IGNORECASE | re.MULTILINE)

print(len(matches))
print(matches)

Optional Optimization #

If you don't need to capture the leading number markers (like 6) 6. ), you can convert that first group into a non-capturing group with (?:...) to clean up your results:

regex = r"^(?:\d+\)\s*\d+\.\s+)(.*?) ISSN"
# Now matches will only contain the journal name + frequency
matches = re.findall(regex, txt, re.IGNORECASE | re.MULTILINE)

This should now capture all your journal entries exactly like it did on regex101.

内容的提问来源于stack exchange，提问作者chikitin