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getdefault method for python dictionary

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Baiju M

Posts: 225
Nickname: baijum81
Registered: Aug, 2004

Baiju M is a new user

getdefault method for python dictionary

Posted: Sep 2, 2005 1:52 AM

This post originated from an RSS feed registered with Python Buzz by Baiju M.
Original Post: getdefault method for python dictionary Feed Title: Programming life without Python(?) Feed URL: http://baijum81.livejournal.com/data/rss Feed Description: Programming life without Python(?)	Latest Python Buzz Posts Latest Python Buzz Posts by Baiju M Latest Posts From Programming life without Python(?)

In this blog:

http://blogs.nuxeo.com/sections/blogs/ruslan_spivak/2005_09_01_btrees-setdefault

Blogger says that Python's dictionary method, 'setdefault' without explicit default
is confusing and useless. Now I think there should be a 'getdefault' method
which also requires two explicit arguments, it will return explicit default
if no key exists.

Here is an example:

>>> d = {1: None}
>>> print d.getdefault(1, 'Hi')
None
>>> print d.getdefault(2, 'Hi')
'Hi'

Hmm.. there is already a 'get' method. If we have 'getdefault'
then 'get' can be deprecated, Here is the reason:

>>> d = {1: None}
>>> print d.get(1)
None
>>> print d.get(2)
None

See, here I didn't thought abount any use cases.

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