Python – Copy dictionary using Dictionary Comprehension

Copy dictionary using Dictionary Comprehension in Python

In this tutorial, you will learn how to use Dictionary Comprehension to copy a given dictionary to a new dictionary in Python.

The syntax of dictionary comprehension to copy a given dictionary, say input_dict, is

{key: value for key, value in input_dict.items()}

input_dict.items() returns a dict_items iterable where we get access to both key and value during each iteration.

Example

In the following program, we take a dictionary in input_dict. This is our input iterable in the dictionary comprehension. We shall add each of the item in this iterable input_dict to the new dictionary output_dict using dictionary comprehension.

input_dict = {
    'foo': 12,
    'bar': 14,
    'moo': 16
}

output_dict = {key: value for key, value in input_dict.items()}
print(output_dict)

Output

{'foo': 12, 'bar': 14, 'moo': 16}

Summary

In this tutorial of Dictionary Comprehension in Python, we have seen how to copy a given dictionary into a new dictionary using dictionary comprehension, with examples.