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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def standard_deviation(numbers):
 """Return standard deviation."""

    numbers = list(numbers)
    if not numbers:
        return 0
    mean = sum(numbers) / len(numbers)
    return (sum((n - mean) ** 2 for n in numbers) /
            len(numbers)) ** .5