Problem with OrderedDict
INADA Naoki
songofacandy at gmail.com
Wed May 30 09:05:52 EDT 2018
> However, the error seems to be intermittent - there are times when it
should
> fail, but does not - so I want to investigate further.
CPython raise RuntimeError *by chance*.
Detecting all invalid usage will increase runtime cost.
So CPython may and may not raise RuntimeError.
> I tried to reduce it to a simple example. I succeeded, but there are two
> problems -
> 1. It always fails, so I have not reproduced the intermittent nature yet.
> 2. It gives a different error -
> RuntimeError: dictionary changed size during iteration
> So my first question is, what is the difference between the two error
> messages?
2nd error will happen when internal hash table is rebuilt while iterating.
If you read C source code, you can expect when it happens.
--
INADA Naoki <songofacandy at gmail.com>
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