python - Iterating Over a Dictionary -

i trying return values in dictionary have value greater int argurment.

def big_keys(dict, int):     count = []     u in dict:         if u > int:             count.append(u)     return count 

i don't understand why isn't working. returns every value in list rather greater in.

by default, dict iterate on keys, not values:

>>> d = {'a': 1, 'b': 2} >>> in d: ...    print ...  b 

to iterate on values, use .values():

>>> in d.values(): ...    print ...  1 2 

with in mind, method can simplified:

def big_keys(d, i):    return [x x in d.values() if x > i] 

i have changed variable names, since dict , int both built-ins.

your method recreating default functionality available in python. filter method trying do:

>>> d = {'a': 1, 'b': 6, 'd': 7, 'e': 0} >>> filter(lambda x: x > 5, d.values()) [6, 7] 

---

from comment seems looking keys , not values. here how that:

>>> d = {'a': 21, 'c': 4, 'b': 5, 'e': 30, 'd': 6, 'g': 4, 'f': 2, 'h': 20} >>> result = [] >>> k,v in d.iteritems(): ...    if v > 20: ...       result.append(k) ... >>> result ['a', 'e'] 

or, shorter way:

>>> [k k,v in d.iteritems() if v > 20] ['a', 'e']