正则表达式：链接多个负向后查找和负向前查找

Question

Regexes are just headaches. I want to chain two negative lookbehind and negative lookahead REGEXes together.

First one:

re.sub(r'(?<!([0-1\b][0-9]|[2][0-3])):(?!([0-5][0-9])((?i)(am)|(pm)|(a.m)|(p.m)|(a.m.)|(p.m.))?\b)',':\n',s)

Second one:

re.sub(r'(?<!([ps][tp])):(?!([\/][\/]))',':\n',s)

They both work separately, and add \\n if they are not true. One is for time and the other is for URLs. How would I add them together so that \\n is added right after a colon if the colon doesn't belong to a URL nor time.

This was the first part of my question: How to split string with colons but not if it is a time?

Answer 1

Ended up going the long way and using sub to mend the broken URLs that were broken apart by the previous negative lookbehind and negative lookahead regex. Ugh.

s = re.sub(r'(?<!([0-1\b][0-9]|[2][0-3])):(?!([0-5][0-9])((?i)(am)|(pm)|(a.m)|(p.m)|(a.m.)|(p.m.))?\b)',':\n',s,flags=re.IGNORECASE)
reg = re.compile(re.escape('http:\n//'), re.IGNORECASE)
reg1 = re.compile(re.escape('https:\n//'), re.IGNORECASE)
reg.sub('http://', s)
reg.sub('https://', s)