Hello there Abhi,
: I am looking for a way to build dictionaries of dict in python.
:
: For example in perl I could do
:
: my $hash_ref = {};
: $hash->{$a}->{$b}->{$c} = "value";
: if (exists $hash->{$a}->{$b}->{$c} ){ print "found value"}
Autovivifying. That's what the perl-heads call that.
: Can I do something similar with dictionaries in Python.
I suspect you want to look into the collections module. Here's an
example of how to use it to create a two-level dictionary with the
same autovivifying behaviour you are accustomed to in perl.
>>> import collections
>>> d = collections.defaultdict(collections.defaultdict)
>>> a,b,c = range(3)
>>> d[a][b] = c
>>> d
defaultdict(<type 'collections.defaultdict'>, {0: defaultdict(None, {1: 2})})
Have a look at the collections module. See if that scratches your
itch.
Good luck,
-Martin
--
Martin A. Brown
http://linux-ip.net/
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