Counting characters in string
1 2 >>> s = 'a;jfkd;aflhakfhaskfjalghlakfhfnkjafyksd' 3 >>> cnt = {} 4 >>> for c in s: 5 cnt[c] = cnt.get(c,0) + 1 6 7 >>> print cnt 8 {'a': 7, 'd': 2, 'g': 1, 'f': 7, 'h': 4, 'k': 6, 'j': 3, 'l': 3, 'n': 1, 's': 2, 'y': 1, ';': 2}
This can be used to count any distribution.
Note the use of dict.get(key,default) to set to 0
if the key is not avaiable.
If this were perl, I would just do a
1 cnt[c] += 1
But python will give an error instead of returning 0.
It's not too bad, though.
