config.py

import os

basedir = os.path.abspath(os.path.dirname(__file__))


class Config:
    # Web form security
    SECRET_KEY = os.environ.get('SECRET_KEY') or 'hard to guess string'

    # Database
    SQLALCHEMY_DATABASE_URI = os.environ.get('DATABASE_URL', '').replace(
        'postgres://', 'postgresql://') or\
        'sqlite:///' + os.path.join(basedir, 'app.db')
    SQLALCHEMY_TRACK_MODIFICATIONS = False

    # PDF folder
    PDF_FOLDER_PATH = os.environ.get('PDF_FOLDER_PATH') or os.path.join(basedir, 'pdf')

    # Questions per page
    QUESTIONS_PER_PAGE = int(os.environ.get('QUESTIONS_PER_PAGE') or 10)

    # Twilio Verify
    TWILIO_ACCOUNT_SID = os.environ.get('TWILIO_ACCOUNT_SID')
    TWILIO_AUTH_TOKEN = os.environ.get('TWILIO_AUTH_TOKEN')
    TWILIO_VERIFY_SERVICE_ID = os.environ.get('TWILIO_VERIFY_SERVICE_ID')

   # Email
    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_PERSONAL = os.environ.get('MAIL_USERNAME_PERSONAL')
    MAIL_PASSWORD_PERSONAL = os.environ.get('MAIL_PASSWORD_PERSONAL')
    MAIL_USERNAME = os.environ.get('MAIL_USERNAME')
    MAIL_PASSWORD = os.environ.get('SENDGRID_API_KEY')
    MAIL_DEFAULT_SENDER = os.environ.get('MAIL_DEFAULT_SENDER')
    ADMINS = ['ADMINS']

    # Heroku logs
    LOG_TO_STDOUT = os.environ.get('LOG_TO_STDOUT')