Python dict() Function

Python dict() Function is used to create a Python dictionary, a collection of key-value pairs.

Output:

{'One': '1', 'Two': '2'}

A dictionary is a mutable data structure i.e. the data in the dictionary can be modified. Dictionary is an indexed data structure i.e. the contents of a dictionary can be accessed by using indexes, here in the dictionary the key is used as an index.

Example 1: Creating dictionary using keyword arguments

We can pass keyword arguments as a parameter with the required values that will be keys and values of the dictionary.

Syntax:

dict(**kwarg)

Output:

{'a': 1, 'b': 2, 'c': 3, 'd': 4}

Example 2: Creating deep-copy of the dictionary using dict()

Creating a new instance (deep copy) of dictionary using dict().

Syntax:

dict(mapping)

Output:

After change in shallow copy, main_dict: {'a': 10, 'b': 2, 'c': 3}
After change in deep copy, main_dict: {'a': 10, 'b': 2, 'c': 3}

Example 3: Creating dictionary using iterables

The keys and values can be passed to dict() in form of  iterables like lists or tuples to form a dictionary and keyword arguments can also be passed to dict().

Syntax:

dict(iterable, **kwarg)

Output:

{'a': 1, 'b': 2, 'c': 3, 'd': 4}