在字符串中搜索单词python时遇到问题

Question

I have the following string:

u'>>\n> yes\n>'

and the following function, to search it for yes or y:

def checkformatch(search_str):    

    to_find = re.compile(r'\b(yes|y)\b')
    match_obj = to_find.search(search_str.lower)
    which_word_matched = match_obj.group() if match_obj else ''
    return which_word_matched

as far as I can tell nothing is being returned. When I step through this in the pycharm debugger, it doesn't seem to get to the return statement ( very strange behaviour ).

What am I doing wrong?

Answer 1

Your code throws a TypeError: expected string or buffer on a match_obj = to_find.search(search_str.lower) line.

lower() is a method , you need to call it:

to_find.search(search_str.lower())