Hi @chriddyp, I don’t understand the layout components that would correspond to these callbacks.
Would it be something like…
app.layout = html.Div([
dcc.Dropdown(id='my-dropdown', value = 'default',
options =[
{'label': 'New York City', 'value': 'NYC'},
{'label': 'Montréal', 'value': 'MTL'},
{'label': 'San Francisco', 'value': 'SF'}
]
),
dcc.Link('Download CSV', id = 'my-link'),
])