Python: 'Deep create' keys in a dictionary?

Asked Aug 20 '18 at 05:54

Active Aug 20 '18 at 05:56

Viewed 42 times

Being a Perl convert I'm wondering, if it is possible in Python to create more then one level of keys in a dictionary.

In Perl, if I have an empty hash, I can e.g. write this:

my %h;  # emtpy hash
$h{level1}{level2}{level3} = "something";

Do I really have to do the same thing in Python like this:

h = {}   # empty dictionary
h['level1'] = {}
h['level1']['level2'] = {}
h['level1']['level2']['level3'] = "something"

or is there a shortcut?

edited Aug 20 '18 at 05:56

Yu Hao

asked Aug 20 '18 at 05:54

petro4213

See: https://stackoverflow.com/questions/651794/whats-the-best-way-to-initialize-a-dict-of-dicts-in-python – Alex Reynolds Aug 20 '18 at 05:56
1

Thanks. This shows a lot of solutions. Sorry, but I just didn't find it; should have used 'autovivification' as a keyword... – petro4213 Aug 20 '18 at 06:18
No problem, sometimes the right search keys can be the real question! – Alex Reynolds Aug 20 '18 at 19:09

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