我有这个问题:
import mysql.connector
cnx = mysql.connector.connect(user='root', password='xxx',
host='127.0.0.1',
database='xxxx')
cursor = cnx.cursor()
query = ("SELECT app_id FROM op_ids")
cursor.execute(query)
LATCH_APP_ID=cursor.fetchall()
cursor.close()
cnx.close()
数据库上app_id的值是 ybDWvzU4iijnqqX8xAxx 但是当我运行python脚本时,它会返回 [(u'ybDWvzU4iijnqqX8xAxx',)] ,所以我可以' t在其他方法中使用它因为我收到以下错误:
TypeError: cannot concatenate 'str' and 'list' objects
如果使用这样的变量:
LATCH_APP_ID = "ybDWvzU4iijnqqX8xAxx"
脚本运行正常
任何人都可以帮助我吗?
答案 0 :(得分:0)
似乎cursor.fetchall()
已经返回:
[(u'ybDWvzU4iijnqqX8xAxx',)]
所以你只需要从结构中提取字符串:
result = cursor.fetchall()
t = result[0] # fetch the tuple from the first item in the list
LATCH_APP_ID = t[0] # fetch the string from the first (only) item in the tuple