It’s been a while since version 2.1 came out. As you know, this version adds support for assignment expressions. Have you tried it?
And when I use VS Code, it helps me highlight the variable by default when I move the cursor over. However, if I hadn’t made the extra settings, it wouldn’t have helped me check the strings. Em, you know, if I carelessly write two IDs,
id='tabel', I probably find it out until the process reports an error. But if they’re variables, it’s different, and I will get a very obvious underline.
from dash import html, dcc, Dash, Output, Input, State, callback_context, no_update app = Dash(__name__) app.layout = html.Div([my_input := dcc.Input(), my_output := html.Div()]) @app.callback(Output(my_output, 'children'), Input(my_input, 'value')) def update(value): return value if __name__ == "__main__": app.run_server(debug=True)
Then you might ask, where did my ID go? What if I want to use
callback_context.triggered to know which component triggers the callback?
Don’t worry. Let me print it out.
See, dash gave it a component ID in UUID format. Then you can use it in callbacks.
if callback_context.triggered["prop_id"].split(".") != my_btn.id: return no_update
Hope this helps you. XD