Request Error Handling

Dash Python
1

Hello

What’s the best way to handle request errors? Sometimes it might respond with something unexpected. Maybe a 404 or the data structure has changed.

import dash
import dash_core_components as dcc
import dash_html_components as html
import requests

app = dash.Dash(__name__)


def get_data_from_api():
    # fetch data from an API here.
    return [
        {'x': [1, 2, 3], 'y': [4, 1, 2], 'type': 'bar', 'name': 'SF'},
        {'x': [1, 2, 3], 'y': [2, 4, 5],
         'type': 'bar', 'name': u'Montréal'},
    ]


app.layout = html.Div(children=[
    dcc.Graph(
        id='example-graph',
        figure={
            'data': get_data_from_api(),
            'layout': {
                'title': 'Dash Data Visualization'
            }
        }
    )
])

if __name__ == '__main__':
    app.run_server(debug=True)