How can I use pickle for deep copying in Python?

How can I use pickle for deep copying in Python?

You can use the pickle module to create deep copies of objects in Python. Just use pickle.dumps() to serialize and pickle.loads() to deserialize.

Can you show me a code example?

Sure! Here's a simple example:

import pickle

original_list = [1, 2, [3, 4]]
# Create a deep copy
deep_copied_list = pickle.loads(pickle.dumps(original_list))

# Modify the deep copy
deep_copied_list[2][0] = 'changed'

print(original_list)  # Output: [1, 2, [3, 4]]
print(deep_copied_list)  # Output: [1, 2, ['changed', 4]]

What types of objects can I pickle?

You can pickle most Python objects, including lists, dictionaries, and custom classes, but not open file handles or database connections.

Are there any limitations to using pickle?

Yes, pickle is not secure against erroneous or maliciously constructed data. Avoid unpickling data from untrusted sources.