Python dict() Function

Python dict() function is a constructor which creates a dictionary. Python dictionary provides three different constructors to a create dictionary.

• If no argument is passed, it creates an empty dictionary.
• If a positional argument is given, a dictionary is created with the same key-value pairs. Otherwise, pass an iterable object.
• If keyword arguments are given, the keyword arguments and their values are added to the dictionary created from the positional argument.

Signature

Parameters

kwargs: It is a keyword argument.

mapping: It is another dictionary.

iterable: It is an iterable object in the form of a key-value pair(s).

Return

It returns a dictionary.

Let's see some examples of dict() function to understand it's functionality.

Python dict() Function Example 1

A simple example to create an empty or non-empty dictionary. Arguments of the dictionary are optional.

Output:

{}
{'a': 1, 'b': 2}

Python dict() Function Example 2

Output:

{'x': 5, 'z': 20, 'y': 10}
{'x': 5, 'z': 20, 'y': 10}

Python dict() Function Example 3

Output:

{1: 'One', 2: 'Two', 3: 'Three'}
{'y': 'Y', 'x': 'X'}