Hi awesome community, I am trying to refresh my HTML content every moment using dcc.Interval but not being able to do that. I am following 2 - On the disk (e.g. on a file or on a new database) for sharing data between callbacks. Can anyone please help? Way to reproduce import dash from dash.depend…

Is that because it’s took quick? if it updates every half a second, maybe it doesn’t have enough time to display the expected output?

Hi @adamschroeder , I tried with 1s, 3s, and 5s, didn’t help.

@adamschroeder , more info-- there is a print(value) statement in my code that should print a value on my console at every refresh/callback. However, I see only one print on my console-- the value I plugged in initially-- 10, which is why I believe dcc.Interval() is not doing the update it is expecte…

But I see that you’re only printing one value. The function doesn’t have a for loop that prints out multiple times. It’s just one print. You have to put the print and value+=1 inside a for loop, I think.

Nevertheless, I tried you suggestion writing a recursive loop, but didn’t help. Even worse, it doesn’t get any callback now: import dash from dash.dependencies import Input, Output import dash_core_components as dcc import dash_html_components as html from dash.exceptions import PreventUpdate from…

maybe somthing like this, @tbillah @app.callback(Output('page-content', 'children'), [Input('total', 'value')]) def display_page(v): countdown = [] v = int(v) while v > 0: print(v) sleep(3) countdown.append(v) v = v - 1 return [html.Div…

Thanks @adamschroeder , I should have mentioned that I have already tried this. This approach will sleep 3 seconds to generate each element of the list countdown and then print all the lines together in the webpage: Value: 10 Value: 9 Value: 8 Value: 7 Value: 6 Value: 5 Value: 4 Value: 3 Value: 2 Va…

Hey @tbillah I think the interval needs to be in the callback as an input. How about something like this: import dash from dash.dependencies import Input, Output, State import dash_core_components as dcc import dash_html_components as html from dash.exceptions import PreventUpdate external_style…

You must add the Interval component as an Input to trigger the callback. Here is a piece of example code based on your example, import dash from dash.dependencies import Input, Output, State import dash_core_components as dcc import dash_html_components as html from dash.exceptions import PreventUp…

Using dcc.Interval for continuous update

Dash Python

tbillah June 16, 2020, 6:29pm 6

People already tried that but to no avail, please see Update layout after callback, without refreshing page?

Topic		Replies	Views
dcc.Interval doesn't update data Dash Python	17	1698	September 14, 2023
Update of dash app Dash Python	4	1823	November 25, 2019
dcc.Interval not working Dash Python	2	3329	December 26, 2020
Mixed callback with interval and dropdown 📊 Plotly Python	0	231	September 9, 2020
dcc.Interval for multipage apps Dash Python	9	645	April 20, 2023

Using dcc.Interval for continuous update

Related topics