In Python 3.6:
d = {0: None}
for i in d:
del d[i]
d[i+1] = None
print(i)
The output is
0
1
2
3
4
In Python 2.7 the output goes up to 7. What causes this output?
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user1717828
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I get the "expected" output on Python 3.4 as well. – DeepSpace Jan 04 '18 at 13:03
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Wow, that was fast. Someone nerd-sniped me at work with this last night. Thanks for finding the duplicate question (I swear I looked all morning!). – user1717828 Jan 04 '18 at 13:03
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FYI, I googled "python modify dict while iterating". – John Kugelman Jan 04 '18 at 13:04
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@JohnKugelman Cool, thanks. Since you have so much rep can you hard-delete this question for me? – user1717828 Jan 04 '18 at 13:05
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1Only if it gets downvoted. No need to delete it, though. It's not bad to have duplicates with different wording. – John Kugelman Jan 04 '18 at 13:06