Dictionary Methods

Python provides several built-in methods to manipulate dictionaries:

Common Dictionary Methods

• clear(): Removes all items from the dictionary.
• copy(): Returns a shallow copy of the dictionary.
• get(key, default): Returns the value for the specified key. If the key is not found, returns the default value (None if not specified).
• items(): Returns a view object of the dictionary’s key-value pairs as tuples.
• keys(): Returns a view object of the dictionary’s keys.
• pop(key[, default]): Removes and returns the item with the specified key. If the key is not found, returns the default value (raises a KeyError if not specified).
• popitem(): Removes and returns an arbitrary (key, value) pair as a tuple.
• setdefault(key, default): Returns the value for the specified key. If the key is not found, inserts the key with the default value and returns the default value.
• update([otherdict]): Updates the dictionary with the key-value pairs from another dictionary or an iterable.
• values(): Returns a view object of the dictionary’s values.

Example

Python

my_dict = {'name': 'Alice', 'age': 30, 'city': 'New York'}

# Add a new key-value pair
my_dict['occupation'] = 'engineer'

# Get the value for a key
print(my_dict.get('address', 'Unknown'))  # Output: Unknown

# Remove a key-value pair
my_dict.pop('age')

# Get all keys
print(my_dict.keys())  # Output: dict_keys(['name', 'city', 'occupation'])

# Get all values
print(my_dict.values())  # Output: dict_values(['Alice', 'New York', 'engineer'])

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