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Python Flask Basics Welcome to Flask Multiply View

Chastin Davis
PLUS
Chastin Davis
Courses Plus Student 2,299 Points
Posted by Chastin Davis
Chastin Davis
Courses Plus Student 2,299 Points

I don't know why this isn't working.

Why isn't this working? I even tried what I placed in the comments. I have tried placing four routes as well, one for each combination possible between an int and a float and also for float to float and int to int.

What is going on here??

flask_app.py 
from flask import Flask

app = Flask(__name__)


@app.route('/multiply/10/10')
@app.route('/multiply/12/12') # why doesnt @app.route('/multiply/<int:12>/<float: 12.5>') work???
@app.route('/multiply')
def multiply():
    return '25'

1 Answer

Keith Whatling
Keith Whatling
17,759 Points
Keith Whatling
Keith Whatling
17,759 Points

So I'm answering this while eating dinner so it might go all over the place.

multiply needs to take two args from the app.route decorator. 

def multiply(arg1, arg2):
    result = arg1 * arg2
    return result

They need to default to 5 so 

def multiply(arg1=5, arg2=5):
    result = arg1 * arg2
    return result

Following that its just a case of copying what Kenneth does in the vid for ints and floats. make sure you have the @app.route('/multiply') at the top of the stack.

from flask import Flask

app = Flask(__name__)

@app.route('/multiply')
@app.route('/multiply/<int:arg1>/<int:arg2>')
@app.route('/multiply/<float:arg1>/<float:arg2>')
@app.route('/multiply/<int:arg1>/<float:arg2>')
@app.route('/multiply/<float:arg1>/<int:arg2>')
def multiply(arg1=5, arg2=5):
    result = arg1 * arg2
    return str(result)

Spoiler, if you are not mathy like me. (question 5-5 is just annoying, just return arg1 * arg2!)