Question

我想从数据库中提取json，所以我这样做：

数据库中的内容json

'{“规则”：98}

def do():
    c = conn.cursor()
    c.execute("SELECT content_json FROM page_s WHERE URL = 'page'")
    select = json.dumps(c.fetchone()) # return '{ "rules": 98 }
    extract = json.loads(select)
    print extract['rules']

但有错误

TypeError：list indices必须是整数，而不是str

Answer 1

Problem 1 - namshi/jose 5.0.2 requires lib-openssl * -> the requested linked library openssl has the wrong version installed or is missing from your system, make sure to have the extension providing it. - namshi/jose 5.0.1 requires lib-openssl * -> the requested linked library openssl has the wrong version installed or is missing from your system, make sure to have the extension providing it. - namshi/jose 5.0.0 requires lib-openssl * -> the requested linked library openssl has the wrong version installed or is missing from your system, make sure to have the extension providing it. - tymon/jwt-auth 0.5.9 requires namshi/jose 5.0.* -> satisfiable by namshi/jose[5.0.0, 5.0.1, 5.0.2]. - Installation request for tymon/jwt-auth ^0.5.9 -> satisfiable by tymon/jwt-auth[0.5.9].返回一个元组，在你的情况下是一个单项元组。

所以我写道：

c.fetchone()

或直接来源：

print(extract[0]['rules'])

从数据库解析json

1 个答案: