Python dict.get() raises KeyError

Question

I am getting lost here, Python 2.7, I have a dictionary mt, and I use the get() method, which by documentation says:

g

Answer 1

>>> mt = {'key1' : 1}
>>> mt.get('is_rebill', 0)
0

It does not generates key error if key is not present it returns 0

>>> mt.update({'is_rebill':1})
>>> mt.get('is_rebill', 0)
1

>>> if mt.get('is_rebill', 0) == 1:
...     print True
... else:
...     print False
... 
False

Answer 2

So I nailed the problem down. Before this code was put in place there was this one

File "/home/ubuntu/subscription-workers/commands/dr/rebilling.py", line 48, in rebill
    if mt['is_rebill'] == 1:
KeyError: 'is_rebill'

The problem was that there were .pyc files from the older version, but the stack trace was loading the actual code. After running

find . -name "*.pyc" -exec rm -rf {} \;

and reloading the app everything was fine and without problems.