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Oct 7, 2024 · In Python, a dictionary can be created by placing a sequence of elements within curly {} braces, separated by a ‘comma’. The dictionary holds pairs of values, one being the Key and the other corresponding pair element being its Key:value.
- 12 min
- 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", }
Oct 22, 2024 · Learn everything there is to know about the Python dictionary, like how to create one, how to add elements to it, and how to retrieve them.
Use the for loop to iterate a dictionary in the Python script. Example: Access Dictionary Using For Loop capitals = {"USA":"Washington D.C.", "France":"Paris", "India":"New Delhi"} for key in capitals: print("Key = " + key + ", Value = " + capitals[key])
Defining a Dictionary. Dictionaries are Python’s implementation of a data structure that is more generally known as an associative array. A dictionary consists of a collection of key-value pairs. Each key-value pair maps the key to its associated value.
How to Define a Dictionary in Python. A Python dictionary is a collection of key-value pairs. It is defined using curly braces {} in which you place key-value pairs such that each key-value pair is separated by a comma. The best way to understand this is by having a look at some examples. Example 1
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Dictionary. Dictionaries are used to store data values in key:value pairs. 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.
