how do i add new items to a dictionary ?

[roadrage]

ok... the appending part seems to be working now...
I have modified the code a bit....

def fizz_buzz_advanced(db,ll,ul):
    ndb = {}
    for i in range(ll,ul):
        for k,v in db.items():
            p = i%k
            if (p == 0):
                ndb[i] = v
            else:
                n = ''
                ndb[i] = n
    print ndb

db = {3:'Fizz', 5:'Buzz'}
ll = 2
ul = 7
fizz_buzz_advanced(db,ll,ul)

but am not getting the desired output now...