Python Application Connection to MySQL
MySQL is a highly popular open source database, used by developers all over the world. In this instruction we’ll show you how to connect your Python application, hosted within Apiqcloud Cloud, to this DB server.
1. In our example, we have both Python and MySQL servers within a single environment. You can createsimilar one, use separate environments for your app server and database or work with any external instances.
2. Access your application server via Apiqcloud SSH Gate.
3. Now, install a MySQL connector for Python with the following command:
4. Next, let’s create a simple script to establish connection. You can use any preferable text editor for this task, as well as any filename with the .py extension (e.g. vim script.py).
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import mysql.connectorfrom mysql.connector import errorcodetry: cnx = mysql.connector.connect(user='{user}', password='{password}', host='{host}', database='{database}')except mysql.connector.Error as err: if err.errno == errorcode.ER_ACCESS_DENIED_ERROR: print("Something is wrong with your user name or password") elif err.errno == errorcode.ER_BAD_DB_ERROR: print("Database does not exist") else: print(err)else: print("You are connected!") cnx.close() |
- {user} - username to log into database with
- {password} - password for the appropriate user
- {host} - link to your MySQL container
- {database} - database to be accessed (e.g. the default mysql one)
This script will connect to the specified database server with the provided credentials and will print connection errors (if any) or just a “You are connected!” phrase.
5. So, let’s execute our code with the appropriate command:
If the “You are connected!” string appeared within terminal, the connection was successful. Now, you can be sure that you database server is accessible and can extend code to execute all of the required actions.
