Python dictionary Method - popitem()

The popitem() method is a dictionary method in Python that removes and returns an arbitrary (key, value) pair from the dictionary. It can be used to remove and retrieve items from a dictionary in a single step.

The syntax for using popitem() is as follows:

dict.popitem()

The method does not take any arguments, and it returns a tuple containing the key and value of the item that was removed.

If the dictionary is empty, calling popitem() raises a KeyError exception.

Here is an example that demonstrates the use of popitem():

>>> d = {'a': 1, 'b': 2, 'c': 3}
>>> key, value = d.popitem()
>>> print(key, value)
'c' 3
>>> print(d)
{'a': 1, 'b': 2}

In this example, popitem() is used to remove an arbitrary item from the dictionary d. The key and value of the removed item are returned and assigned to the variables key and value, respectively. The resulting dictionary d contains only the remaining items.