I have a list like: lst=[['a',1],['b',2],['a',3],['b',1],['a',1]]
how can I convert this to dictionary like that: dct={'a':[1,3,1],'b':[2,1]}
CodePudding user response:
The default dictionary can help you
from collections import defaultdict
ddict = defaultdict(list)
data = [['a',1],['b',2],['a',3],['b',1],['a',1]]
for key, value in data:
ddict[key].append(value)
CodePudding user response:
Try this:
lst = [['a',1],['b',2],['a',3],['b',1],['a',1]]
dct = {}
for [k, v] in lst:
dct[k] = dct[k] [v] if k in dct else [v]