python dictionary how to add key and value
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A dictionary in Python is a collection of key-value pairs, where each key must be unique. Dictionaries are useful for storing and retrieving data efficiently. In this tutorial, we will explore how to add key-value pairs to a Python dictionary with illustrative code examples.
To add a key-value pair to a dictionary, you can use the following syntax:
Here, dictionary_name is the name of your dictionary, key is the unique identifier, and value is the data associated with the key.
Let's look at a simple example:
In this example, we created an empty dictionary my_dict and added three key-value pairs. The print statement displays the updated dictionary:
The update() method allows you to add multiple key-value pairs to a dictionary in a single step. Here's an example:
The output will be:
Adding key-value pairs to a Python dictionary is a straightforward process using either the basic assignment syntax or the update() method. Dictionaries provide a flexible and efficient way to organize and manage data in your Python programs. Experiment with different scenarios to become more comfortable working with dictionaries and unlocking their full potential in your projects.
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