Confused problem

Dash Python
1

when i bind dash_core_component.Input with dependencies.Input.
it will always show a IndexError.

Traceback (most recent call last):
File “rootfolder\venv\lib\site-packages\flask\app.py”, line 2309, in call
return self.wsgi_app(environ, start_response)
File “rootfolder\venv\lib\site-packages\flask\app.py”, line 2295, in wsgi_app
response = self.handle_exception(e)
File “rootfolder\venv\lib\site-packages\flask\app.py”, line 1741, in handle_exception
reraise(exc_type, exc_value, tb)
File “rootfolder\venv\lib\site-packages\flask_compat.py”, line 35, in reraise
raise value
File “rootfolder\venv\lib\site-packages\flask\app.py”, line 2292, in wsgi_app
response = self.full_dispatch_request()
File “rootfolder\venv\lib\site-packages\flask\app.py”, line 1815, in full_dispatch_request
rv = self.handle_user_exception(e)
File “rootfolder\venv\lib\site-packages\flask\app.py”, line 1718, in handle_user_exception
reraise(exc_type, exc_value, tb)
File “rootfolder\venv\lib\site-packages\flask_compat.py”, line 35, in reraise
raise value
File “rootfolder\venv\lib\site-packages\flask\app.py”, line 1813, in full_dispatch_request
rv = self.dispatch_request()
File “rootfolder\venv\lib\site-packages\flask\app.py”, line 1799, in dispatch_request
return self.view_functionsrule.endpoint
File “rootfolder\venv\lib\site-packages\dash\dash.py”, line 958, in dispatch
][0])
IndexError: list index out of range

Is there someone face the same problem?

2

Can you provide an actual code example that produces this error? It would also be useful to know what versions of the libraries you are using.

3

Thanks for your response.
I found it may relate to my VPN, I can’t recurrent it right now.

Versions:

dash.version
‘0.35.2’
dash_core_components.version
‘0.42.1’
dash_html_components.version
‘0.13.5’

Code:
@app.callback(Output(‘graph-component’, ‘figure’), [Input(‘button’, ‘n_clicks’), Input(‘input-component’, ‘value’)
def plotfigure(btnclicks, inputvalue):
.
.
.
# Plot the figure with input component value
return figure