import pymysql
 
 
def connection():
    conn = pymysql.connect(db='x',
                       user='x',
                       passwd='x',
                       host='x')
    return conn
 
connection()
 
def test(conn):
    with conn.cursor() as cursor:
        sql = "SELECT id from xxxx"
        cursor.execute(sql)
        result = cursor.fetchall()
        print(result)
 
test()
 
 
 
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