Question

我正在将数据库应用程序从Python 2.7升级到3.4。我最初使用mysqldb，但尝试切换到mysql-connector。我的数据库连接失败，并出现内部TypeError。这是代码和错误：

import mysql.connector

try:
  dbh = mysql.connector.connect("localhost","pyuser","pypwd","jukebox")
except mysql.connector.Error as err:
  print("Failed opening database: {}".format(err))
  exit(1)

这是错误：

# python loadcd.py
Traceback (most recent call last):
  File "loadcd.py", line 12, in <module>
    dbh = mysql.connector.connect("127.0.0.1","pyuser","pypwd","jukebox")
  File "/usr/local/lib/python3.4/dist-packages/mysql/connector/__init__.py", line 179, in connect
    return MySQLConnection(*args, **kwargs)
  File "/usr/local/lib/python3.4/dist-packages/mysql/connector/connection.py", line 57, in __init__
    super(MySQLConnection, self).__init__(*args, **kwargs)
TypeError: __init__() takes 1 positional argument but 5 were given

我很茫然。完全相同的连接适用于mysqldb，我可以使用PHP或在命令行中使用相同的凭据进行连接。

Answer 1

您应提供关键字参数：

dbh = mysql.connector.connect(host="localhost",user="pyuser",password="pypwd",database="jukebox")

Answer 2

''' 导入mysql.connector

mydb = mysql.connector.connect(
host="localhost",
user="yourusername",
password="yourpassword"

）

打印（mydb） '''

使用它并根据您的配置替换值。

为什么mysql.connector.connect失败并出现内部错误？

2 个答案: