程式碼大約是這樣子寫~~

channel_secret = os.getenv(‘LINE_CHANNEL_SECRET’, None) channel_access_token = os.getenv(‘LINE_CHANNEL_ACCESS_TOKEN’, None)

secrectkey = os.getenv(‘secrectkey’, None)

HEROKU CLI設定參考這裡：

https://devcenter.heroku.com/articles/config-vars