python - Using MySQL in Flask

Question

Can someone share example codes in Flask on how to access a MySQL DB? There have been documents showing how to connect to sqlite but not on MySQL.

Thank you very much in advance

Answer 1

Firstly you need to install Flask-MySQL package. Using pip for example:

pip install flask-mysql

Next you need to add some configuration and initialize MySQL:

from flask import Flask
from flaskext.mysql import MySQL

app = Flask(__name__)
mysql = MySQL()
app.config['MYSQL_DATABASE_USER'] = 'root'
app.config['MYSQL_DATABASE_PASSWORD'] = 'root'
app.config['MYSQL_DATABASE_DB'] = 'EmpData'
app.config['MYSQL_DATABASE_HOST'] = 'localhost'
mysql.init_app(app)

Now you can get connection and cursor objects and execute raw queries:

conn = mysql.connect()
cursor =conn.cursor()

cursor.execute("SELECT * from User")
data = cursor.fetchone()