config.py

import os
from dotenv import load_dotenv

basedir = os.path.abspath(os.path.dirname(__file__))
load_dotenv(os.path.join(basedir, '.env'))


class Config(object):
    SECRET_KEY = os.environ.get('SECRET_KEY') or 'you-will-never-guess'

    MYSQL_USER = os.environ.get('MYSQL_USER')
    MYSQL_PW = os.environ.get('MYSQL_PW')
    MYSQL_DB = os.environ.get('MYSQL_DB')

    #SQLALCHEMY_DATABASE_URI = 'postgresql+psycopg2://{user}:{pw}@{url}/{db}'.format(user=POSTGRES_USER,pw=POSTGRES_PW,url=POSTGRES_URL,db=POSTGRES_DB)
    #SQLALCHEMY_DATABASE_URI = os.environ.get('DATABASE_URL') or 'sqlite:///' + os.path.join(basedir, 'app.db')
    SQLALCHEMY_DATABASE_URI = 'mysql+pymysql://{user}:{pw}@{url}/{db}'.format(user="root", pw="pass", url='0.0.0.0', db='db_lesson1')
    SQLALCHEMY_TRACK_MODIFICATIONS = False
    MAIL_SERVER = os.environ.get('MAIL_SERVER')
    MAIL_PORT = int(os.environ.get('MAIL_PORT') or 25)
    MAIL_USE_TLS = os.environ.get('MAIL_USE_TLS') is not None
    MAIL_USERNAME = os.environ.get('MAIL_USERNAME')
    MAIL_PASSWORD = os.environ.get('MAIL_PASSWORD')
    ADMINS = ['your-email@example.com']
    POSTS_PER_PAGE = 25