Python Dictionary Update() Method: How To Add, Change, Or Modify Values

Introduction to Python Dictionary

Python dictionaries store data in key-value pairs. They allow efficient data retrieval and modification using their built-in methods like update()

What is the update() Method?

The update() method in Python allows you to add new key-value pairs or update existing ones in a dictionary. It's a flexible way to modify your data.

How to Add Values Using update()

You can easily add new key-value pairs by passing a dictionary or an iterable of key-value pairs to the update() method. Example:my_dict = {'a': 1} my_dict.update({'b': 2}) # {'a': 1, 'b': 2}

Changing Existing Values with update()

If the key already exists in the dictionary, the update() method modifies the corresponding value. Example:my_dict = {'a': 1} my_dict.update({'a': 3}) # {'a': 3}

Multiple Key Updates at Once

The update() method supports updating multiple key-value pairs in a single operation, making it a time-saving tool when dealing with larger datasets.

Learn More on Python with PythonCentral

For more detailed tutorials on Python programming and dictionary methods, visit PythonCentral.io!