how would you do this for a specific key instead of all the keys?
greg whittier wrote:
On Thu, Mar 12, 2009 at 4:24 PM, ski <nor...@khine.net> wrote:
Hello,
I have this issue, which I am unsure on how to solve.
mylist1 = {'a': 'x123', 'b':'12'}
mylist2 = {'a': 'x234', 'c': 'a23'}
for k in mylist2:
... if k in mylist1:
... mylist1[k] = [mylist1[k], mylist2[k]]
... else:
... mylist1[k] = mylist2[k]
...
mylist1
{'a': ['x123', 'x234'], 'c': 'a23', 'b': '12'}
this merges the two dictionaries, but what should be the method if:
mylist = [{'a': 'x123', 'b':'12'}, {'a': 'x234', 'b': 'd33', 'c':
'a23'}, {'a': 'x234', 'c': 'XX123'} .... ]
where mylist has nth number of dictionaries and i want to merge the values
of the keys that are the same?
Thanks
Norman
If I understand what you mean by merging, I think you want
mylist = [{'a': 'x123', 'b':'12'}, {'a': 'x234', 'b': 'd33', 'c':
'a23'}, {'a': 'x234', 'c': 'XX123'} .... ]
merged_dict = {}
for dictionary in mylist:
for key, value in dictionary.items():
merged_dict.setdefault(key,[]).append(value)
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