This document provides an introduction to using MariaDB with Python. It discusses installing Python and various Python drivers for MariaDB, including the official MariaDB Connector/Python, PyMySQL, and MariaDB Connector/ODBC. It also covers connecting to MariaDB from Python using a client configuration file for security, running multiple queries across MariaDB hosts with multiprocessing, and performing data aggregation tasks.

1. Getting Started with
MariaDB and Python
Richard Bensley
Remote Database Administrator
MariaDB Corporation

2. https://github.com/rcbensley/mariadb-and-python
Source

3. New to Python?
● Python version 2 or 3?
○ 3!
● Official Python Documentation, Tutorials, FAQ’s, HOWTO’s and more:
○ https://docs.python.org/3
● Composing Programs:
○ http://www.composingprograms.com
● Automate the Boring Stuff with Python:
○ https://automatetheboringstuff.com

4. Install Python
● Official Installer form www.python.org
● Microsoft Windows Store (look for Python 3.7)
● Anaconda
● In your Operating System software repository

5. Why Python?

6. Big Ben
https://twitter.com/big_ben_clock

7. Behind the Curtain
import time
hour = int(time.strftime('%I'))
bongs = list()
for i in range(0, hour):
bongs.append(“BONG”)
print(*bongs, sep=" ")

10. Install a Driver
“I'm gonna get myself connected”
- Stereo MC

11. MariaDB Connector/Python
● A new Connector for Python, for MariaDB by MariaDB!
○ https://github.com/MariaDB/mariadb-connector-python
● Developed against MariaDB Connector/C.
● Open Source, GPL v2.1
● Coming Soon …
○ https://mariadb.com/resources/blog/

12. PyMySQL
● Pure python, no binaries.
● It's in your repo!
○ sudo dnf install python3-pymysql
○ pip3 install pymysql
● No root access? Install into your home:
■ pip3 install --user pymysql

13. MariaDB Connector/ODBC
● Can’t wait? It MUST be from MariaDB?
○ Install MariaDB Connector/ODBC and use PyODBC!
■ sudo dnf install python3-pyodbc
■ sudo dnf install mariadb-connector-odbc

14. DBAPI
This API has been defined to encourage similarity between the Python modules that
are used to access databases. By doing this, we hope to achieve a consistency
leading to more easily understood modules, code that is generally more portable
across databases, and a broader reach of database connectivity from Python.
https://www.python.org/dev/peps/pep-0249/

15. Get on with it!

16. Import Shopping List
● Standard Library (https://docs.python.org/3/library/index.html)
○ configparser
○ os
○ sys
○ argparse
○ multiprocessing
○ datetime and time
○ sqlite3
● Third Party (https://pymysql.readthedocs.io/en/latest/)
○ pymysql

17. Connecting with the Client Config
● Read Connection details from a client config
○ The [client] section in ~/.my.cnf
● No plain text passwords in process list!
● No plain text passwords in version control!

18. Multiprocessing
Example Tool, MQM - Multiple Query MariaDB
Run one or more SQL queries, against multiple MariaDB hosts.

21. Data Aggregation
● Read stored credentials.
● Fetch two result sets into files.
● Delete from the target table.
● Load files for further analysis.

22. Questions?

23. THANK YOU!