Difference between unindexable and unsubscriptable

[Ben Finney]

Jackson <jackson at hotmail.com> writes:

> I would like to test if an object can accept:   obj[0]

Then do so. Use the object in the way you want to use it, and catch
any exceptions that you want to handle.

>  >>> from sets import Set
>  >>> Set([1,2])[0]
> TypeError: unindexable object
>
>  >>> 3[0]
> TypeError: unsubscriptable object
>
> It seems like each of these errors can be replaced with a single
> type error.

Well, they are both merely instances of TypeError, just with a
different message. Catching 'TypeError' will catch either of them.

I agree, though, that it would be preferable to have the same message
for these two cases that appear to be saying the same thing.

-- 
 \      "The trouble with eating Italian food is that five or six days |
  `\                     later you're hungry again."  -- George Miller |
_o__)                                                                  |
Ben Finney