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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 primes(start: int = 1, end: int = 999) -> List[int]: """Generate a list of prime numbers. :param start: First value of range. :param end: Last value of range. :return: A list of prime numbers from start to end. """

        # TODO: It should generate random primes with passed length.
        sieve_size = (end // 2 - 1) if end % 2 == 0 else (end // 2)
        sieve = [True] * sieve_size

        primes = []  # list of primes
        # add 2 to the list if it's in the given range
        if end >= 2:
            primes.append(2)
        for i in range(sieve_size):
            if sieve[i]:
                value_at_i = i * 2 + 3
                primes.append(value_at_i)
                for j in range(i, sieve_size, value_at_i):
                    sieve[j] = False

        chop_index = 0
        for i in range(len(primes)):
            if primes[i] >= start:
                chop_index = i
                break
        return primes[chop_index:]