dict.items() and dict.iteriteams() almost does the same thing, but there is a slight difference between them –
- dict.items(): returns a copy of the dictionary’s list in the form of (key, value) tuple pairs, which is a (Python v3.x) version, and exists in (Python v2.x) version.
- dict.iteritems(): returns an iterator of the dictionary’s list in the form of (key, value) tuple pairs. which is a (Python v2.x) version and got omitted in (Python v3.x) version.
For Python2.x:
Example-1
Python
# Python2 code to demonstrate# d.iteritems()d ={ "fantasy": "harrypotter", "romance": "me before you", "fiction": "divergent" }# every time you run the object address keeps changesprint d.iteritems() |
Output:
<dictionary-itemiterator object at 0x7f04628d5890>
To print the dictionary items, use a for() loop to divide the objects and print them
Example-2
Python
# Python2 code to demonstrate# d.iteritems()d ={"fantasy": "harrypotter","romance": "me before you","fiction": "divergent"}for i in d.iteritems(): # prints the items print(i) |
Output:
('romance', 'me before you')
('fantasy', 'harrypotter')
('fiction', 'divergent')
If we try to run the dict.items() in Python v2.x, it runs as dict.items() exists in v2.x.
Example-3
Python
# Python2 code to demonstrate# d.items()d ={ "fantasy": "harrypotter", "romance": "me before you", "fiction": "divergent" } # places the tuples in a list.print(d.items())# returns iterators and never builds a list fully.print(d.iteritems()) |
Output:
[(‘romance’, ‘me before you’), (‘fantasy’, ‘harrypotter’), (‘fiction’, ‘divergent’)] <dictionary-itemiterator object at 0x7f1d78214890>
For Python3:
Example-1
Python3
# Python3 code to demonstrate# d.items()d ={ "fantasy": "harrypotter", "romance": "me before you", "fiction": "divergent" }# saves as a copyprint(d.items()) |
Output:
dict_items([(‘fantasy’, ‘harrypotter’), (‘fiction’, ‘divergent’), (‘romance’, ‘me before you’)])
If we try to run the dict.iteritems() in Python v3.x, we will ecounter with an error.
Example-2
Python3
# Python3 code to demonstrate# d.iteritems()d ={ "fantasy": "harrypotter", "romance": "me before you", "fiction": "divergent" }print("d.items() in (v3.6.2) = ")for i in d.items(): # prints the items print(i)print("\nd.iteritems() in (v3.6.2)=")for i in d.iteritems(): # prints the items print(i) |
Output:
d.items() in (v3.6.2) =
('fiction', 'divergent')
('fantasy', 'harrypotter')
('romance', 'me before you')
d.iteritems() in (v3.6.2)=
Traceback (most recent call last):
File "/home/33cecec06331126ebf113f154753a9a0.py", line 19, in
for i in d.iteritems():
AttributeError: 'dict' object has no attribute 'iteritems'
Let us see the differences in a tabular form:
| dict.items() | dict.iteritems() | |
| 1. | The dict.items() method returns a view object. | The dict.iteritems() function returns an iterator of the dictionary’s list. |
| 2. |
Its syntax is-: dictionary.items() |
The dict.iteritems() is a generator that yields 2-tuples |
| 3. | It does not take any parameters. | It does not take any parameters. |
| 4. | Its return value is a list of tuple pairs. | Its return value is the iterator on list of key value pairs. |
| 5. | If the input list is empty then it returns an empty list. | It is the feature of python2 version but gets removed in python3 version. |
