To loop through all the values, use itertools.chain.from_iterable
from itertools import chain
dict_list = [
{'a' : 1, 'b' : 2},
{'c' : 2, 'd' : 3},
{'x' : 4, 'y' : 5, 'z': 0}
]
for item in chain.from_iterable(i.values() for i in dict_list):
print item
Outputs:
1
2
2
3
5
4
0