# listbycount.py

# listbycount.py

mylist = [1, 1, 6, 1, 3, 3, 4, 4, 4, 4, 5, 2, 2, 2, 2]
mydict = {}
for i in set(mylist):
    mydict[i] = mylist.count(i)

t = sorted(mydict.items(), key=lambda value: value[1], reverse=True)

print t