How To Zip Two Dictionaries In Python

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Python is an amazing language with a lot of built-in functions and libraries that make programming easier. One such built-in function is zip(), which is commonly used to merge two lists into a list of tuples. However, you might be wondering how to use this function to merge two dictionaries instead. In this blog post, we’ll explore how to achieve this using the zip() function and dictionary comprehension.

Using the zip() function

To use the zip() function, you need to have two dictionaries that you want to merge. For example, consider the following dictionaries:


dict1 = {'a': 1, 'b': 2, 'c': 3}
dict2 = {'d': 4, 'e': 5, 'f': 6}

You can use the zip() function and dictionary comprehension to create a new dictionary that contains the keys and values of both dictionaries. Here’s how:

    zipped_dict = {k: v for d in [dict1, dict2] for k, v in d.items()}

Let’s break down this code:

  • We use dictionary comprehension to create a new dictionary. The syntax is: {key_expression: value_expression for item in iterable}.
  • We create a list of dictionaries – [dict1, dict2] – and loop through them using for d in [dict1, dict2].
  • For each dictionary, d, we loop through its key-value pairs using for k, v in d.items().
  • Finally, we add the key-value pairs to the new dictionary using k: v.

After executing the code, zipped_dict will contain the merged dictionaries:


{'a': 1, 'b': 2, 'c': 3, 'd': 4, 'e': 5, 'f': 6}

Conclusion

In this blog post, we’ve demonstrated how to zip two dictionaries in Python using the zip() function and dictionary comprehension. This method is concise and efficient, making it an excellent choice for merging dictionaries in your Python programs. Happy coding!