Python Dash: 'Dash' object has no attribute 'route'

Question

Working with Python Dash and have it working from local host, but when attempt to deploy to my python app server, I have issues.

When I keep the app as just Flask it works with this code:

from flask import Flask
import dash

app = Flask(__name__)

@app.route("/")
def hello():
     return "Hello World!"

When I try to pass the server to the Dash instance (when according to Dash docs is acceptable, I receive the error). Here is the code

from flask import Flask
import dash

server = Flask(__name__)
app = dash.Dash(__name__, server=server)

@app.route("/")
def hello():
    return "Hello World!"


 I receiving the error:

AttributeError: 'Dash' object has no attribute 'route'

I don't know anything about Dash. Where in the docs does it say you can do this? — Daniel Roseman
– Daniel Roseman, Commented Nov 4, 2018 at 21:13

Daniel Roseman · Accepted Answer · 2018-11-04 21:44:27Z

4

The docs don't say what you think they do. app is the Dash instance, not the Flask one - that is available via the server variable, so you can call route on that.

@server.route("/")
def hello():
     return "Hello World!"

edited Nov 4, 2018 at 21:44

answered Nov 4, 2018 at 21:38

Daniel Roseman

602k68 gold badges910 silver badges923 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

jKraut Over a year ago

I tried that exact thing as well, did not solve the issue.

Daniel Hepper · Accepted Answer · 2019-02-08 13:58:11Z

2

As Daniel Roseman said, you must use server.route instead of app.route.

However, Dash registers itself to serve the path /, overwriting your route.

Other paths not used by Dash work as expected, e.g.:

@server.route('/hello-world')
def hello():
     return "Hello World!"

answered Feb 8, 2019 at 13:58

Daniel Hepper

30.1k10 gold badges78 silver badges79 bronze badges

Collectives™ on Stack Overflow

Python Dash: 'Dash' object has no attribute 'route'

2 Answers 2

1 Comment

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Related