TypeError: 'input' object is not iterable

[yuchaofan13]

I try to run 'dtale.show(df)' but get this error message. Any help would be appreciated.

Traceback (most recent call last):
File "C:\ProgramData\Anaconda3\lib\site-packages\dtale\app.py", line 708, in _start
app = build_app(
File "C:\ProgramData\Anaconda3\lib\site-packages\dtale\app.py", line 474, in build_app
app = dash_views.add_dash(app)
File "C:\ProgramData\Anaconda3\lib\site-packages\dtale\dash_application\views.py", line 131, in add_dash
init_callbacks(dash_app)
File "C:\ProgramData\Anaconda3\lib\site-packages\dtale\dash_application\views.py", line 345, in init_callbacks
@dash_app.callback(
File "C:\ProgramData\Anaconda3\lib\site-packages\dash\dash.py", line 950, in callback
self._validate_callback(output, inputs, state)
File "C:\ProgramData\Anaconda3\lib\site-packages\dash\dash.py", line 649, in _validate_callback
for i in inputs:
TypeError: 'Input' object is not iterable

[yuchaofan13]

Forgot to mention I'm running jupyter notebook in VS code. It was working a few hours ago; the only change that happened in the interim I can think of is that I installed beautifulsoup and selenium.

[aschonfeld]

So, I wonder if dash has updated their API. When creating callbacks you used to be able to specify a single input or a list of inputs. Looks like based on your exception it now requires you to always specify a list of inputs. I'm running dash 1.20.0 and its working fine. That being said, I'm working on a new version of D-Tale which will always use a list of inputs. I'll let you know when the new version has been released, but in the meantime you can try downgrading your version of dash if its newer than 1.20.0.

Apologies for the issue

[yuchaofan13]

Thanks a lot for the help, and also many thanks for developing dtale- I love it!

[aschonfeld]

@yuchaofan13 happy to hear it helps! If you havent already please toss your ⭐️ on the repo. Thanks 🙏

[aschonfeld]

Fixed in v1.56.0