>> ConcurrentHashMap scales better in the face of threading
.. .
>> So, do Python implementations need to guarantee that list(dict_var) ==
>> a later result from list(dict_var)?
> What code would break if we loosened this restriction?
I can imagine someone has code like this:
for k in d:
print '%5s' % k
for k in d:
print '-----'
for v in d.values():
print '%5s' % v
It seems likely to me that a lot of code using d.values() would care about the
order of the values and the only order that matters is corresponding to some
set of keys. There are probably a lot of functions that take keys and values
separately, so it would not be uncommon to call those with a pattern like:
save_config(configfile, d.keys(), d.values()).
In the OP's context where multiple threads are running, it may be fair to say
that all bets are off.
Raymond
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