How do I chunk lists in Python for beginners?

Chunking lists in Python is a simple concept that allows you to break a large list into smaller, more manageable sublists or "chunks". This is especially useful when you want to process large datasets in smaller portions.

Here’s a straightforward method to chunk a list using a function:


def chunk_list(lst, chunk_size):
    """Breaks a list into chunks of a specified size."""
    for i in range(0, len(lst), chunk_size):
        yield lst[i:i + chunk_size]

# Example usage
my_list = [1, 2, 3, 4, 5, 6, 7, 8, 9]
chunked = list(chunk_list(my_list, 3))
print(chunked) # Output: [[1, 2, 3], [4, 5, 6], [7, 8, 9]]