KraftDiner wrote:
> I have a dictionary and sometime the lookup fails...
> it seems to raise an exception when this happens.
> What should I do to fix/catch this problem?
>
> desc = self.numericDict[k][2]
> KeyError: 589824 <---- This is the error that is being produced,
> because there is no key
> 589824.
>
As stated you can wrap the access in the try - except - else statement,
as in
try:
foo['bar']
except :
# Handle the error.
pass
else :
# We have it, so use it...
print foo['bar']
Or you can use the has_key() and test it first. For example
if foo.has_key('bar'):
print 'we have it'
else :
print 'we don't have bar.'
That'll do it for me.
Chaz.
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