How To Find A Value In A Dictionary Python

In this tutorial, we will learn about finding a value in a Python dictionary. Dictionaries are one of the most useful data structures provided by Python, which allows us to store a collection of key-value pairs.

Dictionaries provide quick and efficient access to finding values associated with their respective keys.

Step 1: Create a Dictionary

Let us start by creating a simple dictionary with some key-value pairs. You can create a dictionary by placing a comma-separated list of key-value pairs within curly braces {}. A key and its corresponding value are separated by a colon :.

Step 2: Access the Value Using Key

In most cases, you will access a value in a dictionary by providing its key within square brackets [].


If you try to access a key that does not exist in the dictionary, you will get a KeyError.

Step 3: Using the get() Method

Alternatively, you can use the get() method to retrieve a value associated with a key. The advantage of using the get() method over the square bracket notation is that it does not raise a KeyError if the key does not exist in the dictionary. Instead, it returns None or any default value specified as a second argument.


You can also provide a default value as the second argument, which will be returned if the key does not exist.

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Step 4: Checking If a Key or Value exists in the Dictionary

You can use the in keyword to check if a key exists in a dictionary. This method returns a boolean value, True if the key exists and False otherwise.


To check if a value exists in the dictionary, you can use the values() method. The values() method returns a view object that displays a list of all the values in the dictionary.


Full Code


In this tutorial, we have learned how to find a value in a Python dictionary using various approaches, such as accessing the value using a key, using the get() method, and checking if a key or value exists in the dictionary using the in keyword. These methods provide a convenient way to work with dictionaries and greatly enhance their usability.