How to cope with mutable and immutable dictionaries?

In the context of a database of Python choosing a mutable or immutable dictionary can be critical for further processes such as enhancement of the user preferences, however in your scenario it would be better to choose a mutable dictionary such as “dict” of Python.

Mutable dictionaries allow you to perform modification of key-value pairs. It also offers efficient updation of user preferences even without requiring the creation of a new dictionary. Therefore, if you choose a mutable dictionary then there is no need to create a new dictionary after when you perform any change.

For instance here is the example given of using a mutable dictionary to manage the preferences of users:-

User_preferences = {

    ‘theme’: ‘dark’,

    ‘language’: ‘English’,

    ‘notifications’: True

}

# Update user preferences

User_preferences[‘notifications’] = False

User_preferences[‘language’] = ‘Spanish’

Here is the instance given to create a mutable dictionary:-

# Creating a mutable dictionary

My_dict = {‘key1’: ‘value1’, ‘key2’: ‘value2’, ‘key3’: ‘value3’}

# Accessing and modifying values

Print(“Before modification:”, my_dict)

# Modifying an existing key-value pair

My_dict[‘key2’] = ‘new_value2’

# Adding a new key-value pair

My_dict[‘key4’] = ‘value4’

Print(“After modification:”, my_dict)