Iterate Python dictionary (associative arrays)
Using keys
It is not memory efficient for large dictionaries.
d = {"k1": "v1", "k2": "v2", "k3":"v3"}
for k in d:
print(k)
## Or
for k in d.keys():
print(k)k3 k2 k1 k3 k2 k1
Env: Python 2.7.18
Using values
It is not memory efficient for large dictionaries.
d = {"k1": "v1", "k2": "v2", "k3":"v3"}
for v in d.values():
print(v)v3 v2 v1
Env: Python 2.7.18
Using items (both keys and values)
It is not memory efficient for large dictionaries.
d = {"k1": "v1", "k2": "v2", "k3":"v3"}
for k, v in d.items():
print(k, v)('k3', 'v3')
('k2', 'v2')
('k1', 'v1')
Env: Python 2.7.18
Using iterkeys
It is more memory efficient for large dictionaries.
d = {"k1": "v1", "k2": "v2", "k3":"v3"}
for k in d.iterkeys():
print(k)k3 k2 k1
Env: Python 2.7.18
Using itervalues
It is more memory efficient for large dictionaries.
d = {"k1": "v1", "k2": "v2", "k3":"v3"}
for v in d.itervalues():
print(v)v3 v2 v1
Env: Python 2.7.18
Using iteritems
It is more memory efficient for large dictionaries.
d = {"k1": "v1", "k2": "v2", "k3":"v3"}
for k, v in d.iteritems():
print(k, v)('k3', 'v3')
('k2', 'v2')
('k1', 'v1')
Env: Python 2.7.18
