Rob Andrews wrote:
> Attempting to massage these into files I can process has involved a
> lot of "throw-away" scripting, and I've caught myself doing some
> really questionable things with basic data structures, leading to my
> original question. Dictionary key errors have been the most common
> here lately, popping up in a fairly wide range of circumstances due to
> seemingly random data.
Do you know about dict.get()? It will return None or a default value of
your choice if a key is missing. Might be helpful...
In [1]: d={1: 2}
In [2]: d[1]
Out[2]: 2
In [3]: d[2]
------------------------------------------------------------
Traceback (most recent call last):
File "<ipython console>", line 1, in <module>
<type 'exceptions.KeyError'>: 2
In [4]: d.get(2)
(no output, i.e. None)
In [5]: d.get(2, 100)
Out[5]: 100
Kent
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