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Python

import os
import time
from flask import Flask
import mysql.connector
passfile = open('/run/secrets/db-password', 'r')
#give db some time to start
time.sleep(5)
#connect to db
conn = mysql.connector.connect(
user='root',
password=passfile.read(),
host='db', # name of the mysql service as set in the docker-compose file
database='example',
auth_plugin='mysql_native_password'
)
passfile.close()
# populate db
cursor = conn.cursor()
def prepare_db():
cursor.execute('DROP TABLE IF EXISTS blog')
cursor.execute('CREATE TABLE blog (id INT AUTO_INCREMENT PRIMARY KEY, title VARCHAR(255))')
cursor.executemany('INSERT INTO blog (id, title) VALUES (%s, %s);', [(i, 'Blog post #%d'% i) for i in range (1,5)])
conn.commit()
prepare_db()
# server
app = Flask(__name__)
@app.route('/')
def listBlog():
cursor.execute('SELECT title FROM blog')
response = ''
for c in cursor:
response = response + '<div>' + c[0] + '</div>'
return response
if __name__ == '__main__':
app.run()