Python - Read & Write tables from MySQL with Security

Gist Page : example-python-read-and-write-from-mysql

Common part

Libraries dependency

Install mysql package, in bash :

pip install mysql-connector==2.1.4

import pandas as pd
import mysql.connector
from sqlalchemy import create_engine

Mysql Connection

SQLAlchemy URI looks like this : 'mysql+mysqlconnector://user:password@host_ip:port/database'

Connection

# ====== Connection ====== #
# Connecting to mysql by providing a sqlachemy engine
engine = create_engine('mysql+mysqlconnector://'+os.environ['MYSQL_USER']+':'+os.environ['MYSQL_PASSWORD']+'@'+os.environ['MYSQL_HOST_IP']+':'+os.environ['MYSQL_PORT']+'/sandbox', echo=False)

How to create a table in MySQL with Python ?

Code example

# ====== Writing table ====== #
# Creating a simple pandas DataFrame with two columns
liste_hello = ['hello1','hello2']
liste_world = ['world1','world2']
df = pd.DataFrame(data = {'hello' : liste_hello, 'world': liste_world})

# Writing Dataframe to Mysql and replacing table if it already exists
df.to_sql(name='helloworld', con=engine, if_exists = 'replace', index=False)

How to query a table from MySQL with Python ?

Code example

# ====== Reading table ====== #
# Reading Mysql table into a pandas DataFrame
data = pd.read_sql('SELECT * FROM helloworld', engine)