Python dict() Function

Python dict() Function is used to create a Python dictionary. A dictionary is a collection of key-value pairs. A dictionary is a mutable data structure i.e. the data in the dictionary can be modified. In python 3.6 and earlier version dictionary is an unordered collection of key-value pairs but from python 3.7 dictionary is ordered data structure. 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:

class dict(**kwarg)

Output:

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

Example 2: Creating dictionary by mapping keys and values

Keys can also be mapped to value using a colon and multiple key-value pairs can be separated by a comma and are passed to dict().

Syntax:

class dict(mapping, **kwarg)

Output:

{'a': 1, '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:

class dict(iterable, **kwarg)

Output:

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