python - 将 JSON 插入 MySQL

Question

我是 python 新手，正在尝试弄清楚如何将一些 json 插入 mysql 中。我正在运行一个已经有的 shell 脚本，它输出 json。

balance = subprocess.check_output([shell_script, 'all'])

conn = MySQLdb.connect(all my info)
cursor = conn.cursor()

#ive tried a few different things but this is the last one i tried
for i in balance.items():
term = i[0]
urls = json.dumps(i[1])
sql = """INSERT INTO balance (name, balance) VALUES (%s, %s)"""
cursor.execute(sql, (term, urls))

但是我尝试的一切我都得到了

AttributeError: 'str' object has no attribute 'items'

这是 shell 脚本的输出

{
"" : 52,
"bob" : 12,
"john" : 2,
"peter" : 4
}

Answer 1

subprocess.check_output() 的输出始终是一个字符串，但您似乎期望它是一个字典:

balance = subprocess.check_output([shell_script, 'all'])

# ...

for i in balance.items():

首先从命令的 JSON 输出加载对象:

balance = subprocess.check_output([shell_script, 'all'])
balance = json.loads(balance)

conn = MySQLdb.connect(all my info)
cursor = conn.cursor()

sql = """INSERT INTO balance (name, balance) VALUES (%s, %s)"""

for term, urls in balance.items():
    cursor.execute(sql, (term, urls))

无需再次将 urls 整数转储为 JSON。