import mysql.connector, os
cnx = mysql.connector.connect(
    host=os.getenv("DB_HOST"),
    port=int(os.getenv("DB_PORT", "3306")),
    user=os.getenv("DB_USER"),
    password=os.getenv("DB_PASS"),
    database=os.getenv("DB_NAME"),
)
print("OK, connecté !")
cnx.close()