I am trying to extract data from mongodb using bottle in python and use d3.js to visualize it: Mongodb-->Python-->d3.js

Question

import bottle, pymongo  
from pymongo import MongoClient 
client = pymongo.MongoClient(some URI)  
db = client['database']  
dbcoll = db['collection']  
@bottle.route('/hello')  
def grab_record(name):  
    bottle.response.headers['Access-Control-Allow-Origin'] = '*'  
    return dbcoll.find_one({'_id':False})  
bottle.run(host='localhost', port=8080, debug=True)  

On opening http://localhost:8080/hello, this is the error I get:

Both bottle.py and this file are on my Desktop. What should I do?

Answer 1

The parameters in @bottle.route's URL must match the number of arguments in the function that follows it. In your case it doesn't. @bottle.route has no parameters but the function has one (name) argument.

You could either remove name e.g.

def grab_record():  
    bottle.response.headers['Access-Control-Allow-Origin'] = '*'  
    return dbcoll.find_one({'_id':False})  

or alternatively change @bottle.route so that it takes a parameter e.g.

@bottle.route('/hello/<name>') 

depending on your needs.