On 2014-01-23 07:15, Ayushi Dalmia wrote:
> I need to initialise a dictionary of dictionary with float values.
> I do not know the size of the dictionary beforehand. How can we do
> that in Python --
Either
d = {}
or, if you want
from collections import defaultdict
d = defaultdict(float)
print(d["Hello"])
If you really do want a dict-of-dict that defaults to floats, you can
do
d = defaultdict(lambda: defaultdict(float))
print(d[3141]["Hello"])
-tkc
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