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Groups > comp.lang.python > #89660

Re: Lucky numbers in Python

From Cecil Westerhof <Cecil@decebal.nl>
Newsgroups comp.lang.python
Subject Re: Lucky numbers in Python
Organization Decebal Computing
References <87lhhabxod.fsf@Equus.decebal.nl>
Date 2015-04-30 20:55 +0200
Message-ID <87fv7htpip.fsf@Equus.decebal.nl> (permalink)

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Because I want the code to work with Python 3 also, the code is now:
    def lucky_numbers(n):
        """
        Lucky numbers from 1 up-to n
        http://en.wikipedia.org/wiki/Lucky_number
        """

        if n < 3:
            return [1]
        sieve = list(range(1, n + 1, 2))
        sieve_index = 1
        while True:
            sieve_len   = len(sieve)
            if (sieve_index + 1) > sieve_len:
                break
            skip_count  = sieve[sieve_index]
            if sieve_len < skip_count:
                break
            del sieve[skip_count - 1 : : skip_count]
            sieve_index += 1
        return sieve

It looks like the list in:
        sieve = list(range(1, n + 1, 2))

does not have much influence in Python 2. So I was thinking of leaving
the code like it is. Or is it better to check and do the list only
with Python 3?

-- 
Cecil Westerhof
Senior Software Engineer
LinkedIn: http://www.linkedin.com/in/cecilwesterhof

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Thread

Lucky numbers in Python Cecil Westerhof <Cecil@decebal.nl> - 2015-04-29 20:24 +0200
  Re: Lucky numbers in Python Ian Kelly <ian.g.kelly@gmail.com> - 2015-04-29 13:57 -0600
    Re: Lucky numbers in Python Cecil Westerhof <Cecil@decebal.nl> - 2015-04-29 23:45 +0200
      Re: Lucky numbers in Python Ian Kelly <ian.g.kelly@gmail.com> - 2015-04-29 16:38 -0600
        Re: Lucky numbers in Python Cecil Westerhof <Cecil@decebal.nl> - 2015-04-30 02:01 +0200
          Re: Lucky numbers in Python Ian Kelly <ian.g.kelly@gmail.com> - 2015-04-29 20:55 -0600
            Re: Lucky numbers in Python Cecil Westerhof <Cecil@decebal.nl> - 2015-04-30 08:34 +0200
      Re: Lucky numbers in Python Chris Kaynor <ckaynor@zindagigames.com> - 2015-04-29 15:56 -0700
    Re: Lucky numbers in Python Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-04-30 10:11 +1000
      Re: Lucky numbers in Python Ian Kelly <ian.g.kelly@gmail.com> - 2015-04-29 21:08 -0600
  Re: Lucky numbers in Python Cecil Westerhof <Cecil@decebal.nl> - 2015-04-30 20:55 +0200
    Re: Lucky numbers in Python Dave Angel <davea@davea.name> - 2015-04-30 15:28 -0400

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