how to produce the most listed item in list in python

Question

I want to produce print the most listed item in a list

for example,

aList = ["SE","CpE","SE","CS","CS","SE"]

and result should be

aList = ["SE"]

which is the most listed item. Please Help!

Answer 1

from collections import Counter

a = Counter(aList)
a.most_common()[0]

http://docs.python.org/2/library/collections.html#collections.Counter

Answer 2

There are lots of such questions, but anyway.

You can do this using stdlib's collections.Counter:

from collections import Counter

a = Counter(aList)
a.most_common()[0]

Or you can write your own class/function:

def count(list):
    items = {}
    for item in list:
        if item not in items:
            items[item] = 0
        items[item] += 1
    return items

>>> count(["SE","CpE","SE","CS","CS","SE"])
{"SE": 3,...}