Question

当我想将Python与MySQL连接时，为什么我一直收到此错误TypeError: __init__() takes 1 positional argument but 2 were given？

确切的错误代码是：

Traceback (most recent call last):
  File "cone.py", line 4, in 
    conn = mysql.connector.connect(f)
  File "C:\Python34\lib\site-packages\mysql\connector\__init__.py", line 179, in connect
    return MySQLConnection(*args, **kwargs)
  File "C:\Python34\lib\site-packages\mysql\connector\connection.py", line 57, in __init__
    super(MySQLConnection, self).__init__(*args, **kwargs)
TypeError: __init__() takes 1 positional argument but 2 were given

这是我的代码：

import mysql.connector

f="localhost","username","password","db"
conn = mysql.connector.connect(f)

c= conn.cursor()

c.execute("SELECT * FROM test")

rows=c.fetchall()

for eachRow in rows:
    print (eachRow)

Answer 1

在python3.4中尝试使用pymysql，

安装Intent

pip3 install PyMySQL

应该在import pymysql conn = pymysql.connect("localhost","dev","pwd","db_name") cur = conn.cursor()

中这样连接

mysql.connector.connect

例如，

conn = mysql.connector.connect(host="localhost",user="uname", password="mypwd", database="emp_db")

这是Doc

Answer 2

如果您已设法修复MySQLdb，那么您可以像这样连接

import MySQLdb

mydb = MySQLdb.connect(host = 'localhost',user = 'flo',passwd = '********',db = 'yourdb')
cur = mydb.cursor()
command = cur.execute('SELECT * FROM yourtable')
results = cur.fetchall()

print (results)

Answer 3

#import mysql connector
import mysql.connector

#declare your database variables
DBHOST = 'localhost'
DBNAME = 'database_name'
DBUSER = 'root'
DBPASS = ''

#establish the connection
connection = mysql.connector.connect(host=DBHOST, database=DBNAME, user=DBUSER, passwd=DBPASS)

Answer 4

试试这个：

conn = mysql.connector.connect(host="host", user="username",   password ="pwd", database="db")

Python连接到MySQL错误

4 个答案: