Python Dictionary Tutorials
Python – Dictionary example
Basics of a Dictionary
Python – Create a dictionary
Python – Create an empty dictionary
Python – Add item to dictionary
Python – Print dictionary
Python – Dictionary length
Python – Dictionary comprehension
Python - Copy dictionary using Dictionary Comprehension
Access / Traverse Dictionaries
Python – Accessing dictionary
Python – Iterate over dictionary
Python – Loop through key, value in dictionary
Python – Loop through dictionary keys
Python – Loop through dictionary values
Python – Print dictionary keys
Python – Print dictionary values
Update Dictionary
Python – Update dictionary
Python – Merge two dictionaries
Python – Concat dictionary
Python – Delete specific key in dictionary
Python – Remove key based on value in dictionary
Python – Clear or empty a dictionary
Checking Operations on Dictionary
Python – Check if dictionary is empty
Python – Check if dictionary contains specific key
Python – Check if dictionary contains specific value
Conversions to and from Dictionary
Python – Convert dictionary keys to list
Python – Convert dictionary values to list
Python – Convert dictionary to list
Dictionary Methods
Python Dictionary Methods
Python Dictionary clear()
Python Dictionary copy()
Python Dictionary fromkeys()
Python Dictionary get()
Python Dictionary items()
Python Dictionary keys()
Python Dictionary values()
Python Dictionary pop()
Python Dictionary popitem()
Python Dictionary setdefault()
Python Dictionary update()
Dictionary Operations
Python – Sort entries in dictionary based on keys
Python – Sort entries in dictionary based on values
Advanced Topics on Dictionaries
Python – List of dictionaries
Python – Dictionary of lists
Python – Nested dictionary
Python – Write dictionary to file
Python Dictionary Comprehension
Python – Unpack dictionary
Python – Swap keys and values in dictionary
Other Tutorials
Are dictionaries ordered in Python?

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.

Python Program

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.