Python Dictionary popitem()
In the python dictionary, the popitem() method returns and removes the last pair of the given dictionary.
Python Dictionary popitem()
The syntax of popitem() is:
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dictionary.popitem()
popitem() Parameters
The popitem() does not take any parameters as arguments.
Let see some examples of the popitem() method in dictionaries.
Example 1: How to use the popitem() method in python dictionaries?
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cars = {"BMW" : 1,"TOYOTA" : 2,"TATA" : 3}
print("Removed items is:",cars.popitem())
print("New Dictionary is :",cars)
print("Removed items is:",cars.popitem())
print("New Dictionary is :",cars)
print("Removed items is:",cars.popitem())
print("New Dictionary is :",cars)
Output:
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Removed items is: ('TATA', 3)
New Dictionary is : {'BMW': 1, 'TOYOTA': 2}
Removed items is: ('TOYOTA', 2)
New Dictionary is : {'BMW': 1}
Removed items is: ('BMW', 1)
New Dictionary is : {}
Example 2: using popitem() with only one element in dictionaries.
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cars = {"BMW" : 1}
print("Removed items is:",cars.popitem())
print("New Dictionary is :",cars)
print("Removed items is:",cars.popitem())
print("New Dictionary is :",cars)
Output 1:
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Removed items is: ('BMW', 1)
New Dictionary is : {}
Traceback (most recent call last):
File "", line 6, in <module>
print("Removed items is:",cars.popitem())
KeyError: 'popitem(): dictionary is empty
As you can see it throws a KeyError exception when there is no item present in the dictionary.
Rules of popitem()
- The popitem() method works on LIFO order (Last in, First out).
- It will remove the last key-value pair from the dictionary.
- Throw KeyError when no item is left in the dictionary.
Khushal Jethava
Machine Learning Engineer at Codiste, specializing in Generative AI, NLP, and Computer Vision. Building production AI systems with Python.
This post is licensed under CC BY 4.0 by the author.