Python dictionary how to merge two dictionaries
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a python dictionary is a collection of key-value pairs where each key is unique. merging two dictionaries in python is a common operation, and there are several ways to achieve this. here, we will explore how to merge two dictionaries using various methods.
method 1: using the `update()` method
the `update()` method merges the keys and values of one dictionary into another. if there are duplicate keys, the values from the dictionary being merged will overwrite the values from the original dictionary.
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method 2: using dictionary unpacking (**)
you can merge two dictionaries using dictionary unpacking (**). this method creates a new dictionary by unpacking the key-value pairs from both dictionaries into a new dictionary.
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method 3: using the `dict()` constructor
you can also merge dictionaries using the `dict()` constructor by passing the key-value pairs of both dictionaries as arguments.
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these are some of the commonly used methods to merge two dictionaries in python. choose the method that best suits your requirements based on whether you want to update the original dictionary or create a new merged dictionary.
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