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Comprehensions & generators

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

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Comprehensions & generators easy

Convert Data in Python with Comprehensions and Generators

Convert mixed data to integers, filter and transform numbers, and extract fields from dicts using list comprehensions and generator expressions.

comprehensions generators list-comprehension
Python 
def convert_numbers(data):
    """Convert a list of mixed values into integers using a comprehension."""
    return [int(item) for item in data if item is not None]


def double_even_numbers(numbers):
    """Double only even numbers using a generator expression."""
    return (n * 2 for n in numbers if n % 2 == 0)


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