How to create an Empty Dictionary in Python

How to create an Empty Dictionary in Python ?

Answer

To create an empty dictionary in Python, you can use curly braces `{}` or the `dict()` constructor. A dictionary is a collection of key-value pairs where each key must be unique.

✐ Examples

1 Creating an Empty Dictionary Using Curly Braces

We can create an empty dictionary in Python using curly braces `{}`. This example demonstrates how to initialize an empty dictionary and add key-value pairs to it.

For example,

We start by declaring and initializing an empty dictionary named my_dict using curly braces.
We add some key-value pairs to the dictionary.
We print the dictionary contents to verify the key-value pairs.

Python Program

my_dict = {}

# Add key-value pairs to the dictionary
my_dict[1] = 'One'
my_dict[2] = 'Two'
my_dict[3] = 'Three'

# Print the dictionary contents
print('Dictionary contents:')
for key, value in my_dict.items():
    print(f'Key: {key}, Value: {value}')

Output

Dictionary contents:
Key: 1, Value: One
Key: 2, Value: Two
Key: 3, Value: Three

2 Creating an Empty Dictionary Using the `dict()` Constructor

We can create an empty dictionary in Python using the `dict()` constructor. This example demonstrates how to initialize an empty dictionary and add key-value pairs to it.

For example,

We start by declaring and initializing an empty dictionary named my_dict using the `dict()` constructor.
We add some key-value pairs to the dictionary.
We print the dictionary contents to verify the key-value pairs.

Python Program

my_dict = dict()

# Add key-value pairs to the dictionary
my_dict['A'] = 1.1
my_dict['B'] = 2.2
my_dict['C'] = 3.3

# Print the dictionary contents
print('Dictionary contents:')
for key, value in my_dict.items():
    print(f'Key: {key}, Value: {value}')

Output

Dictionary contents:
Key: A, Value: 1.1
Key: B, Value: 2.2
Key: C, Value: 3.3

Summary

In this tutorial, we learned How to create an Empty Dictionary in Python language with well detailed examples.

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