mysql - Python 3 pymysql 数据库访问 - 连接到数据库出现以下错误

Question

在通过 python 3.5 连接数据库时，任何人都可以帮助我解决这个问题。接收错误后。

import pymysql

# Open database connection
db = pymysql.connect("localhost","testuser","test123","TESTDB", )

# prepare a cursor object using cursor() method
cursor = db.cursor()

# execute SQL query using execute() method.
cursor.execute("SELECT VERSION()")

# Fetch a single row using fetchone() method.
data = cursor.fetchone()

print ("Database version : %s " % data)

# disconnect from server
db.close()

错误:

RESTART: C:/Program Files (x86)/Python35-32/db_connect.py Traceback (most recent call last): File "C:\Program Files (x86)\Python35-32\lib\site-packages\pymysql-0.7.11-py3.5.egg\pymysql\connections.py", line 916, in connect **kwargs) File "C:\Program Files (x86)\Python35-32\lib\socket.py", line 712, in create_connection raise err File "C:\Program Files (x86)\Python35-32\lib\socket.py", line 703, in create_connection sock.connect(sa) ConnectionRefusedError: [WinError 10061] No connection could be made because the target machine actively refused it

在处理上述异常的过程中，又发生了一个异常:

Traceback (most recent call last): File "C:/Program Files (x86)/Python35-32/db_connect.py", line 4, in db = pymysql.connect("localhost","testuser","test123","TESTDB", ) File "C:\Program Files (x86)\Python35-32\lib\site-packages\pymysql-0.7.11-py3.5.egg\pymysql__init__.py", line 90, in Connect return Connection(*args, **kwargs) File "C:\Program Files (x86)\Python35-32\lib\site-packages\pymysql-0.7.11-py3.5.egg\pymysql\connections.py", line 706, in __ init __ self.connect() File "C:\Program Files (x86)\Python35-32\lib\site-packages\pymysql-0.7.11-py3.5.egg\pymysql\connections.py", line 963, in connect raise exc pymysql.err.OperationalError: (2003, "Can't connect to MySQL server on 'localhost' ([WinError 10061] No connection could be made because the target machine actively refused it)")

Answer 1

来自help

The error (2003) Can't connect to MySQL server on 'server' (10061) indicates that the network connection has been refused. You should check that there is a MySQL server running, that it has network connections enabled, and that the network port you specified is the one configured on the server.

检查您是否正在运行 mysql 并尝试连接到适当的端口(默认为 3306)