Python腳本（PyMySQL）無法連接到本地主機上的數據庫

Question

當我使用PHP時，只需在php腳本中編寫以下行即可連接到localhost上的phpMyAdmin：

<?php

$dbServername = 'localhost';
$dbUsername = 'root';
$dbPassword = '';
$dbName = 'Work';

$conn = mysqli_connect($dbServername, $dbUsername, $dbPassword, $dbName);

?>

（此腳本的目錄是/Users/User/.bitnami/stackman/machines/xampp/volumes/root/htdocs/index.php ）

在運行上述行之前，我首先激活了XAMPP並啟用了端口localhost:8080 。 phpMyAdmin位於http://localhost:8080/phpmyadmin/ 。 這樣可以很好地連接到數據庫。

現在，在Python中，我下載了PyMySQL ，並編寫了以下幾行代碼來完成相同的簡單任務：

import pymysql

conn = pymysql.connect(host='localhost', user='root', password='', db='Work')

（此腳本的目錄是/Users/User/PycharmProjects/First/Main.py ）

但是，當我嘗試運行此命令（首先激活XAMPP並啟用端口localhost:8080 ）之后，出現以下錯誤：

Traceback (most recent call last):
  File "/Users/User/Library/Python/3.6/lib/python/site-packages/pymysql/connections.py", line 920, in connect
    **kwargs)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/socket.py", line 724, in create_connection
    raise err
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/socket.py", line 713, in create_connection
    sock.connect(sa)
ConnectionRefusedError: [Errno 61] Connection refused

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Users/User/PycharmProjects/GCP-OCR/Main.py", line 14, in <module>
    conn = pymysql.connect(host='localhost', user='root', password='', db='Work')
  File "/Users/User/Library/Python/3.6/lib/python/site-packages/pymysql/__init__.py", line 90, in Connect
    return Connection(*args, **kwargs)
  File "/Users/User/Library/Python/3.6/lib/python/site-packages/pymysql/connections.py", line 699, in __init__
    self.connect()
  File "/Users/User/Library/Python/3.6/lib/python/site-packages/pymysql/connections.py", line 967, in connect
    raise exc
pymysql.err.OperationalError: (2003, "Can't connect to MySQL server on 'localhost' ([Errno 61] Connection refused)")

如何解決此錯誤，最后將我的Python腳本連接到MySQL數據庫？

此外，請記住，即使我將localhost替換為127.0.0.1 ，也會遇到完全相同的錯誤。 而且，如果我用localhost:3306替換localhost ，那么我也是一個錯誤（ socket.gaierror: [Errno 8] nodename nor servname provided, or not known ）。

Answer 1

PyMySQL接受port作為獨立參數。 試試看：

conn = pymysql.connect(host='localhost', port=3306, user='root', passwd='', db='Work')

參考此鏈接： PyMySQL

Answer 2

只要我按照下面URL中給出的步驟進行操作，它們就會提供示例代碼以連接MySQLdb插件和PyMySQL插件。

對我來說，MySQLdb提供輸出，而PyMySQL提供連接錯誤，就像您得到的一樣。

https://www.a2hosting.in/kb/developer-corner/mysql/connecting-to-mysql-using-python