Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Python Flask Basics Welcome to Flask View Args Through URL

After solving task 2 task 1 is no longer passing. Why?

How to pass a data into format?

flask_app.py
from flask import Flask
from flask import request 

app = Flask(__name__)


@app.route('/')
@app.route('/<name>')
def hello(name="test"):
     return "Hello {name}".format(name)

1 Answer

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,441 Points

When using named formats you need to assign the value to the name. It would also work to change {name} to {} or {0}:

@app.route('/')
@app.route('/<name>')
def hello(name=None):  # <-- Change default value to None
     return 'Hello {name}'.format(name=name)  # <-- Change format arguments

Also, I changed default argument value to None so that you don't get "Hello Test" when using route '/'