为什么if语句不运行了？求大神帮助

Question

import re
pattern = r'(津)|(京)|(沪)'
num = ['津A.12345', '京A.12345','沪A.12345']
print(num)
for item in num:
    print(item)
    a = re.search(pattern,item)
    if a=='津':
        print('这张车牌归宿地为：天津')
    if a=='京':
        print('这张车牌归宿地为：北京')
    if a=='沪':
        print('这张车牌归宿地为：上海')
   

Answer 1

import re
pattern = r'(津)|(京)|(沪)'
num = ['津A.12345', '京A.12345','沪A.12345']
print(num)
for item in num:
    print(item)
    a = re.search(pattern,item)[0]
#     a = re.search(pattern,item).group(0)这两种都可以用
    if a=='津':
        print('这张车牌归宿地为：天津')
    if a=='京':
        print('这张车牌归宿地为：北京')
    if a=='沪':
        print('这张车牌归宿地为：上海')