popitem(): removes and returns the last inserted key-value pair from a dictionary as a tuple

my_dict={'a':'One','b':'Two','c':'Three'}
x=my_dict.popitem()
print(x)
print(my_dict)

('c', 'Three')
{'a': 'One', 'b': 'Two'}

my_dict={'a':'One','b':'Two','c':'Three'}
my_dict['d']='Four'
x=my_dict.popitem()
print(x)
print(my_dict)

('d', 'Four')
{'a': 'One', 'b': 'Two', 'c': 'Three'}

my_dict={'a':'One','b':'Two','c':'Three'}
x=my_dict.popitem()
print(type(x))

<class 'tuple'>

Example: Handling Empty Dictionary

my_dict = {}
try:
    my_dict.popitem()
except KeyError as e:
    print(f"Error: {e}")

Error: 'popitem(): dictionary is empty'

Example: Removing Items Until Dictionary is Empty

my_dict = {'a': 1, 'b': 2, 'c': 3}
while my_dict:
    key, value = my_dict.popitem()
    print(f"Removed: {key} -> {value}")
print("Dictionary is now empty.")

Removed: c -> 3
Removed: b -> 2
Removed: a -> 1
Dictionary is now empty.

Example: LIFO Operation

stack = {'first': 1, 'second': 2, 'third': 3}
last_in = stack.popitem()
print(f"Last in, first out: {last_in}")

Last in, first out: ('third', 3)

Example 5: Handling Nested Dictionaries

nested_dict = {'first': {'a': 1}, 'second': {'b': 2}}
outer_key, inner_dict = nested_dict.popitem()
print(f"Removed outer item: {outer_key} -> {inner_dict}")
inner_key, inner_value = inner_dict.popitem()
print(f"Removed inner item: {inner_key} -> {inner_value}")

Removed outer item: second -> {'b': 2}
Removed inner item: b -> 2

Subhendu Mohapatra

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