layout: page title: Interface description: Project Community Page group: nav-right

{% include JB/setup %}

Setting Environmental Variables

To set up environmental parameters or variables on Marvin it's recommended to use the argument params that is present on every engine actions.

Setting up params

You may edit the file engine.params that is located at the root directory of your engine. You must insert params as a dictionary:

{
    "login" : "marvin",
    "password": "123455"
}

Loading params

Params are loaded as an argument on your engine execution. Then, inside your code you must do params.get("login") or params["login"] to access those variables.

Samples

Notice that if you are running your actions using an API, you may alse set params at the the API body. These params will overwrite the engine.params file.