pythonflaskshared-variable

Using a shared variable between routes and main in flask

I have a python flask server. In the main of my script, I get a variable from user that defines the mode of my server. I want to set this variable in main (just write) and use it (just read) in my controllers. I am currently using os.environ, but I 'm searching for more flasky way to use.

I googled and tried following options:

  1. flask.g: it is being reset for each request; so, I can't use it inside controllers when it is being set somewhere else.
  2. flask.session: it is not accessible outside request context and I can't set it in the main.
  3. Flask-Session: like the second item, I can't set it in the main.
Solution

  • In main you use app.run() so app is avaliable in main. It should be also avaliable all time in all functions so you can try to use 

    app.variable = value

    but flask has also 

    app.config

    to keep any settings. See doc: Configuration Handling