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Comprehensions & generators

List/dict/set comprehensions, generator expressions, and lazy iteration.

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Comprehensions & generators easy

How to Split Data into Chunks and Use Generators in Python

Split a list into fixed-size chunks with a list comprehension and square even numbers lazily with a generator expression.

comprehensions generators chunking
Python 
def split_numbers(data, chunk_size):
    return [data[i:i + chunk_size] for i in range(0, len(data), chunk_size)]


def square_even_numbers(numbers):
    return (n ** 2 for n in numbers if n % 2 == 0)


if __name__ == "__main__":
    sample_data = list(range(1, 21))
    chunks = split_numbers(sample_data, 5)
    print…
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