CODEWITHSUNDEEP
pythonlistdictionary
MCN
MCN

Reputation: 83

List to Dictionary conversion in Python

I have a list which is holding names as below

d=[['Srini'], ['Rahul'], ['Mano'], ['Rahul'], ['Srini'], ['Mano], ['Srini'], ['Rahul']]

I am using the below code to convert the list to dictionary which should hold names as Keys and the count of names as value.

dic={}
for words in d:
    dic[words]= dic.get(words,0)+1
print(dic)

ERROR: TypeError Traceback (most recent call last) in () 1 dic={} 2 for words in d: ----> 3 dic[words]= dic.get(words,0)+1 4 print(dic)

TypeError: unhashable type: 'list'

Upvotes: 2

Views: 67

Answers (2)

Adi219
Adi219

Reputation: 4814

You could try this:

dic = {}
for i in range(len(d)):
    if d[i] in dic:
        dic[d[i]] += 1
    else:
        dic[d[i]] = 1

Upvotes: 0

Mureinik
Mureinik

Reputation: 312259

List are unhashable. You could, however, assume that each sub-list has a single element and refer to it:

dic={}
for words in d:
    dic[words[0]]= dic.get(words[0], 0) + 1
print(dic)

Note, BTW, that python's Counter already has a pretty similar functionality:

from collections import Counter
print(Counter((i[0] for i in d)))

Upvotes: 2

Related Questions