pop() method returns the value of the given key from a dictionary

pop(), takes one argument ( key as input ) .

Returns : the value of the input key.

The original dictionary is changed after removal of key value pair.

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

Output is here

Two
{'a': 'One', 'c': 'Three'}

If input key is not available then keyerror will be generated.

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

Output ( error as input key is not available )

 KeyError: 'd'

Providing default value if key is not available

pop() can return a default value if the key doesn't exist, avoiding KeyError.

my_dict = {'a': 'One', 'b': 'Two', 'c': 'Three'}
value = my_dict.pop('d', 'Key Not Found')  # No error
print(value)  # Output: Key Not Found

pop() can be used in a loop to safely remove elements.

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

Output

Removed c: 3
Removed b: 2
Removed a: 1

Pop Multiple Items Safely Using a Loop

my_dict = {'x': 10, 'y': 20, 'z': 30}
keys_to_remove = ['x', 'y', 'a']  # 'a' doesn't exist
for key in keys_to_remove:
    value = my_dict.pop(key, 'Key not found')
    print(f"Key: {key}, Value: {value}")
print(my_dict)

Output

Key: x, Value: 10
Key: y, Value: 20
Key: a, Value: Key not found
{'z': 30}

All dictionary methods

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Subhendu Mohapatra

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pop(): removes a specified key from a dictionary and returns the corresponding value

Providing default value if key is not available

Pop Multiple Items Safely Using a Loop

Subhendu Mohapatra