[Bug]: Error trying to use a list argument from custom gradio UI in custom script

[scruffynerf]

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Is there an existing issue for this?

• [X] I have searched the existing issues and checked the recent builds/commits

What happened?

Writing a custom script... and I've encountered this a few times... crashing a1111 entirely, so I'm doing something wrong, and wanting to know the right way to do this.

Try to pass a list of values from Gradio UI function in custom script to run function in custom script.

Steps to reproduce the problem

Gradio UI... custom script Essentially, if I populate a list and attempt pass it along... so here's a minimal example.

def ui(self, is_img2img):
       myvar = [] * 3   # just to point out the list pre-exists
       with gr.Blocks():
            with gr.Row():
                myvar[1] = gr.Checkbox(label="Testing1", value=True)  # this isn't related to checkbox, same for other field types
                myvar[2] = gr.Checkbox(label="Testing2", value=True)
                myvar[3] = gr.Checkbox(label="Testing3", value=True)
       return [ etc, etc..., myvar ]

def run(self, p, ....   myvar,

and I get an error:

Traceback (most recent call last):
  File "...SD/stable-diffusion-webui/launch.py", line 361, in <module>
    start()
  File "...SD/stable-diffusion-webui/launch.py", line 356, in start
    webui.webui()
  File "...SD/stable-diffusion-webui/webui.py", line 205, in webui
    shared.demo = modules.ui.create_ui()
  File "...SD/stable-diffusion-webui/modules/ui.py", line 525, in create_ui
    custom_inputs = modules.scripts.scripts_txt2img.setup_ui()
  File "...SD/stable-diffusion-webui/modules/scripts.py", line 322, in setup_ui
    create_script_ui(script, inputs, inputs_alwayson)
  File "...SD/stable-diffusion-webui/modules/scripts.py", line 302, in create_script_ui
    control.custom_script_source = os.path.basename(script.filename)
AttributeError: 'list' object has no attribute 'custom_script_source'

and stops web.ui entirely, back to CLI

If I remove the myvar from the return and args in run, no error... so it's purely passing a list. If myvar is not a list, no error.

What should have happened?

correctly passing a list value from Gradio to the custom script, same as any other sort of value, as expected...

Commit where the problem happens

0cc0ee1bcb4c24a8c9715f66cede06601bfc00c8

What platforms do you use to access the UI ?

Windows, Linux, MacOS, Android

What browsers do you use to access the UI ?

Mozilla Firefox, Google Chrome, Brave, Microsoft Edge

Command Line Arguments

No

List of extensions

No, happens regardless of extensions...

Console logs

error log provided above, happens even if I add variable to return/run, and Restart UI only:

To create a public link, set `share=True` in `launch()`.
Closing server running on port: 7860
Restarting UI...
Traceback (most recent call last):
  File "...SD/stable-diffusion-webui/launch.py", line 361, in <module>
    start()
  File "...SD/stable-diffusion-webui/launch.py", line 356, in start
    webui.webui()
  File "...SD/stable-diffusion-webui/webui.py", line 205, in webui
    shared.demo = modules.ui.create_ui()
  File "...SD/stable-diffusion-webui/modules/ui.py", line 525, in create_ui
    custom_inputs = modules.scripts.scripts_txt2img.setup_ui()
  File "...SD/stable-diffusion-webui/modules/scripts.py", line 322, in setup_ui
    create_script_ui(script, inputs, inputs_alwayson)
  File "...SD/stable-diffusion-webui/modules/scripts.py", line 302, in create_script_ui
    control.custom_script_source = os.path.basename(script.filename)
AttributeError: 'list' object has no attribute 'custom_script_source'

Additional information

No response

[scruffynerf]

Looks like using *listvariablename is the way to go, on both sides of the ui and run functions. That expands the list correctly when returning the values, and gives the run script access to the parts in the arguments.

[OedoSoldier]

Thanks for your information, got the same error here and solved it. Seems like it doesn't support list input.