如何在python中找到特殊字符之间的字符串？

Question

I have a set of strings like this:

uc001acu.2;C1orf159;chr1:1046736-1056736;uc001act.2;C1orf159;

I need to extract the sub-string between two semicolons and I only need the first occurrence.

The result should be: C1orf159

I have tried this code, but it does not work:

import re
info = "uc001acu.2;C1orf159;chr1:1046736-1056736;uc001act.2;C1orf159;"
name = re.search(r'\;(.*)\;', info)
print name.group()

Please help me. Thanks

Answer 1

您可以拆分字符串并将其限制为两个拆分。

x = info.split(';',2)[1]

Answer 2

       import re
       pattern=re.compile(r".*?;([a-zA-Z0-9]+);.*")
       print pattern.match(info).groups()

This looks for first ; eating up non greedily through .*? .Then it captures the alpha numeric string until next ; is found.Then it eats up the rest of the string.Match captured though .groups()