Re: [Tutor] idiomatic way of merging two dictionaries
by Alan Gauld other posts by this author
Nov 4 2009 1:02AM messages near this date
Re: [Tutor] idiomatic way of merging two dictionaries
|
Re: [Tutor] Stolen thread: Bottom folk vs. toppers was trouble using2to3.py
"Amit Sethi" <amit.pureenergy@[...].com> wrote
> Hi , I am trying to merge(I am not sure if that is the right term)
> dictionaries like this
>
> dict1 ={'a':4,'b':3,'v':7,'h':4}
> dict2={'a':5,'v':4,'k':3}
> dict3 would be {'a':[4,5],'b':[3,4],'v':[7,4],'k':[0,3],'h':[4,0]}
I don't know how "idiomatic" it is but I'd probably just go for a for loop
dict3 = {}
for key in set(dict1.keys()+dict2.keys()): # get the unique keys
dict3[key] = [dict1.get(key,0),dict2.get(key,0)]
I suspect that in Python 3 you could use the new dict notation
to do it slightly more neatly.
HTH,
--
Alan Gauld
Author of the Learn to Program web site
http://www.alan-g.me.uk/
_______________________________________________
Tutor maillist - Tutor@[...].org
To unsubscribe or change subscription options:
http://mail.python.org/mailman/listinfo/tutor
Thread:
Amit Sethi
Lie Ryan
Alan Gauld
|
