Hence, no new dictionary is created, and it returns None. Using the update method, the first dictionary is merged with the other one by overwriting it. You can merge two dictionaries in python using the update() method. How to Merge Dictionaries in Python?īelow are the 8 unique methods by which you can concatenate two dictionaries in python: 1) Using update() method We merge two dictionaries when we need to store two different parts of a common database. For example, if you were to keep a record of all the passwords used on a device, you would implement a dictionary that keeps a track of all the different password values to the corresponding keys of all the apps they are used for.īut what happens when you need to combine the password records of two or more devices you own? This is the situation where we need it. They can prove exceptionally useful to store data that has to be indexed. When is the need to merge dictionaries?ĭictionaries are used to store key-value pairs. Without losing the ability to process arbitrary keyword arguments.Check how to create a python dictionary to learn more.
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