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A dictionary is a collection which is ordered*, changeable and do not allow duplicates. As of Python version 3.7, dictionaries are ordered. In Python 3.6 and earlier, dictionaries are unordered. Dictionaries are written with curly brackets, and have keys and values: Example. Create and print a dictionary:
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Sep 2, 2024 · The Python Dictionaries are a powerful data type in Python that allow you to store data as key-value pairs. In this article, we will be discussing how to compare elements in two dictionaries in Python.
- 14 min
Learn how to define, access, and manipulate dictionaries, a composite data type in Python. Dictionaries are collections of key-value pairs that can be accessed by keys, not by indices.
- Create a Dictionary. We create a dictionary by placing key: value pairs inside curly brackets {}, separated by commas. For example, # creating a dictionary country_capitals = { "Germany": "Berlin", "Canada": "Ottawa", "England": "London" } # printing the dictionary print(country_capitals)
- Access Dictionary Items. We can access the value of a dictionary item by placing the key inside square brackets. country_capitals = { "Germany": "Berlin", "Canada": "Ottawa", "England": "London" } # access the value of keys print(country_capitals["Germany"]) # Output: Berlin print(country_capitals["England"]) # Output: London.
- Add Items to a Dictionary. We can add an item to a dictionary by assigning a value to a new key. For example, country_capitals = { "Germany": "Berlin", "Canada": "Ottawa", }
- Remove Dictionary Items. We can use the del statement to remove an element from a dictionary. For example, country_capitals = { "Germany": "Berlin", "Canada": "Ottawa", }
Jun 24, 2024 · Learn how to create and use dictionaries, one of the most powerful data types in Python, with syntax similar to JSON. See how to access, delete, overwrite, merge, compare, and iterate over dictionaries, and how to handle keys and values of different types.
Nov 3, 2022 · Learn how to create, access, modify, and use dictionaries in Python, a collection of key-value pairs. Dictionaries are ordered in Python 3.7 and higher, and can store any type of values.
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Dec 10, 2021 · Learn how to create, access, modify, and use Python dictionaries, a useful data type for storing key:value pairs. Dictionaries are similar to JSON format, which is common for web data.