1.匹配字符

.
\w, \W
\s, \S
\d, \D
[], [^]
\b, \B, ^, $

2.匹配次数

*, +, ?, {M,N}, {M,}, {,N}, {N}

3.分之

|

4.分组

()
\数字 --> 重复前面第几个分组匹配到的内容

def main():
    re_str = r'(\d\d)\.[a-z]{2,3}'
    print(re.fullmatch(re_str, '23.hj'))

    result = re.findall(re_str, 's56fjh22.huk--=334.ko";sss;ss94.al////')
    print(result)

    # json数据处理
    with open('data.txt', encoding='utf-8') as f:
        # dict1 = json.load(f)
        # for dict2 in dict1['data']:
        #     print(dict2['name'])
        names = re.findall(r'"name":"(.*?)",', f.read())
        print(names)