Create new dictionary from subset of keys : keys « Dictionary « Python Tutorial

1. Python Tutorial
2. Dictionary
3. keys

year = {1:'January', 2:'February', 3:'March',
        4:'April',5:'May', 6:'June', 7:'July', 8:'August',
        9:'September', 10:'October', 11:'November',12:'December'}

print year

months = year.keys()
months.sort()
halfCount = len(months)/2
half = months[0:halfCount]


firstHalf = {}
for x in half:
        firstHalf[x] = year[x]

print firstHalf