CODEWITHSUNDEEP
pythonimportbottle
user623990
user623990

Reputation:

Unsure how to resolve this Bottle error (Python)

Here are my imports:

from bottle import request, route, run, template, static_file, redirect
from urllib2 import urlopen, URLError, Request
from pymongo import MongoClient
from config.development import config
import json

And here is the offending line (and another line that I think may be causing an issue):

game_id = request.forms.get('game_id')
request = Request(config['singlegame_url'].replace('$GAMEID', game_id))

The error I'm getting is:

UnboundLocalError("local variable 'request' referenced before assignment",)

Traceback (most recent call last):
  File "/usr/local/lib/python2.7/site-packages/bottle.py", line 862, in _handle
    return route.call(**args)
  File "/usr/local/lib/python2.7/site-packages/bottle.py", line 1732, in wrapper
    rv = callback(*a, **ka)
  File "app.py", line 23, in add
    game_id = request.forms.get('game_id')
UnboundLocalError: local variable 'request' referenced before assignment

My first thought was that the two request modules were causing issues, but I couldn't get the error to go away by messing around with the imports and importing stuff as another name.

Upvotes: 0

Views: 361

Answers (1)

Mahi
Mahi

Reputation: 21893

You must rename your request variable to something else.

Python kind of reserves the variable name request to be a local variable due to request = ... before actually executing the code. The interpreter then executes your line game_id = request.forms.get('game_id'), where request is the new reserved local variable, which is, undefined.

Here's a good example of the same issue:

>>> x = 1
>>> def f():
...     print(x)  # You'd think this prints 1, but `x` is the local variable now
...     x = 3

>>> f()
Traceback (most recent call last):
  File "<pyshell#5>", line 1, in <module>
    f()
  File "<pyshell#4>", line 2, in f
    print(x)
UnboundLocalError: local variable 'x' referenced before assignment

Upvotes: 2

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