count letter and show in list

Question

I need to receive a string from the user, present it in list so each organ in the list contains [the letter, the number it repeat in a row].

I thought my code is goo

Answer 1

You can do this very easily using defaultdict:

import collections

defaultdict=collections.defaultdict
count=defaultdict(int)
string="hello world"
for x in string:
    count[x]+=1

To show it in a list you can do:

count.items()

which in this case would return:

[(' ', 1), ('e', 1), ('d', 1), ('h', 1), ('l', 3), ('o', 2), ('r', 1), ('w', 1)]