Defining a Dictionary
-
A dictionary is a collection that:
- Can't be ordered
- Is indexed
- Is mutable
- Excludes duplicates
Creating a Dictionary
>>> fruits = {'fruit1': 'apple', 'fruit2': 'banana', 'fruit3': 'pear'}
>>> print(fruits)
{'fruit1': 'apple', 'fruit2': 'banana', 'fruit3': 'pear'}Accessing Items in a Dictionary
>>> fruits = {'fruit1': 'apple', 'fruit2': 'banana', 'fruit3': 'pear'}
>>> print(fruits['fruit2'])
'banana'Adding to a Dictionary
>>> fruits = {'fruit1': 'apple', 'fruit2': 'banana', 'fruit3': 'pear'}
>>> fruits['fruit4'] = 'mango'
>>> print(fruits)
{'fruit1': 'apple', 'fruit2': 'banana', 'fruit3': 'pear', 'fruit4': 'mango'}Removing from a Dictionary
>>> fruits = {'fruit1': 'apple', 'fruit2': 'banana', 'fruit3': 'pear'}
>>> fruits.pop('fruit2')
>>> print(fruits)
>>> fruits = {'fruit1': 'apple', 'fruit3': 'pear'}Combining Two Dictionaries
>>> fruits = {'fruit1': 'apple', 'fruit2': 'banana', 'fruit3': 'pear'}
>>> more_fruits = {'fruit4': 'orange', 'fruit5': 'pear', 'fruit6': 'mango'}
>>> fruits | more_fruits
{'fruit1': 'apple', 'fruit2': 'banana', 'fruit3': 'pear', 'fruit4': 'orange', 'fruit5': 'pear', 'fruit6': 'mango'}References
Previous
Next