python - 为什么我无法使用 python 和 mysql.connector 连接到 mysql 数据库？

Question

我正在尝试连接到 mysql 数据库，但遇到了问题。我正在尝试使用 mysql 连接器(不确定这是否是最有效的库)，但出现错误。

这是我的基本脚本:

import mysql.connector

def test_sql_query():
    db = mysql.connector.connect(host='hostname', database='db', user='dbuser', password='dbpass' port=000)
    cur = db.cursor()
    if db.is_connected():
        print('Connected to MySQL database')
    try:
        sql_command = "select * from test where test like '%FileUploadAgent%' and status='00' order by test desc;"
        cur.execute(sql_command)
        db.commit()
        rows = cur.fetchall()
        for row in rows:
            print "   ", row[1][1]
    except:
        print "did not work"
    db.close()

错误:

 File "sql_test.py", line 44, in <module>
    test_sql_query()
  File "sql_test.py", line 6, in sterling_agent_sql_query
    db = mysql.connector.connect("host='hostname.com' database='dbname' user='dbuser' password='dbpassword' port='000'")
  File "/Library/Python/2.7/site-packages/mysql/connector/__init__.py", line 179, in connect
    return MySQLConnection(*args, **kwargs)
  File "/Library/Python/2.7/site-packages/mysql/connector/connection.py", line 57, in __init__
    super(MySQLConnection, self).__init__(*args, **kwargs)
TypeError: __init__() takes exactly 1 argument (2 given)

我假设我做错了连接。

Answer 1

您传递给 .connect() 的参数是错的。你正在传递一个字符串。相反，每个参数都应该是它们自己的参数。

db = mysql.connector.connect(host='hostname', 
    database='db', 
    user='dbuser', 
    password='dbpass', 
    port=000)

此外，port必须是整数，而不是字符串。我还假设您拥有的 000 是示例数据。如果不是，那是无效的。