How do I create an immutable dictionary in Python?

How do I create an immutable dictionary in Python?

In Python, you can create an immutable dictionary using the types.MappingProxyType from the types module.

Can you show me an example of how to use MappingProxyType?

Sure! Here's a simple example:

from types import MappingProxyType

# Create a regular dictionary
original_dict = {'a': 1, 'b': 2}

# Create an immutable dictionary using MappingProxyType
immutable_dict = MappingProxyType(original_dict)

# Accessing values
print(immutable_dict['a'])  # Output: 1

# Trying to modify it will raise a TypeError
# immutable_dict['a'] = 3  # Uncommenting this will raise an error

What happens if I try to modify the immutable dictionary?

If you try to modify the immutable dictionary, it will raise a TypeError, indicating that the dictionary is read-only.