List all valid options for a single child

[stefanmeili]

I'm hoping to find a way to get a list of all valid options for a configuration option.

For example, I can list the current setting for iso using:

camera = gp.Camera()
config = camera.get_config()
current_iso = config.get_child_by_name('iso').get_value()

How can I list all valid options for my camera:
[50,72,100,140,200,280,400,560,800,1100,1600,2200,3200,4500,6400,9000,12800,18000,25600,36000,51200]

Without resorting to parsing camera.get_summary()?

[jim-easterbrook]

gp_camera_get_single_config gets a single config widget, gp_widget_count_choices tells you how many options the widget has, gp_widget_get_choice gets each of the options.

[stefanmeili]

Thanks - that got me there.

def get_param_range(setting):
    camera = gp.Camera()
    try:
        n_choices = camera.get_single_config(setting).count_choices()
        single_config = camera.get_single_config(setting)
        setting_options = [single_config.get_choice(i) for i in range(n_choices)]
    except:
        raise ValueError(f'invalid or no selections available for for setting "{setting}""')
    camera.exit()
    return setting_options

[jim-easterbrook]

Repeatedly calling get_single_config is suboptimal. Better to call it once to get the "widget", then call count_choices and get_choice on that widget.

[stefanmeili]

Good point. Updated.