keys and values lining up
Tim Peters
tim_one at email.msn.com
Mon Sep 27 21:03:24 EDT 1999
[Nathan Clegg]
> If d is a dict, am I guaranteed that d.keys() and d.values() will
> line up, in proper order, if called successively with no modification
> in between? That is, is the following safe?
>
> k,v = d.keys(), d.values()
Yes, under the mild assumption that you don't have another thread running
that manages to sneak in and mutate d between the calls. If that's a
potential problem, do
kv = d.items() # list of (key, value) tuples
If you want both keys and values, it's clearer to use the method designed
for that purpose anyway.
something-fishy-about-keys-that-don't-unlock-anything-ly y'rs - tim
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