Python正则表达式：仅当下一组的值不是空字符串时匹配

Question

如果我有这样的正则表达式： r'abc(.*?)' ，仅在以下组的值不是空字符串时才如何匹配'abc' ？

Answer 1

You could use :

r = re.compile(r'abc(.+)')
match = r.match('abc123')
value = r.group(1)

This would match only strings with characters following abc and value (eg 123) would be in .group(1) of match object.

Answer 2

abc(.+)

试试这个，这将给abc加上非空的组。