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Re: Why Python is slow

From BartC <bc@freeuk.com>
Newsgroups comp.lang.c
Subject Re: Why Python is slow
Date 2017-01-24 22:23 +0000
Organization A noiseless patient Spider
Message-ID <o68k2s$tc0$1@dont-email.me> (permalink)
References <9048e105-65e6-4e8c-a42f-b37e1d327246@googlegroups.com> <expression-20170124202746@ram.dialup.fu-berlin.de>

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On 24/01/2017 19:45, Stefan Ram wrote:
> thunderbirdmember@gmail.com writes:
>> Python is easy to write but is slow executing things.
>
>   Just a few days ago, I wrote my first Python expression
>   and fed it to an interpreter. It was
>
> 3**3**3**3
>
>   . Ok, it was not the very first Python expression I ever
>   entered, but one of the first ten.
>
>   How long does it take to evaluate it?

Python will try and evaluate it as an integer. I think the answer has 
around a trillion (decimal) digits, so it will likely run out of memory 
first.

C won't have much luck either, not even using doubles, as the answer is 
outside the exponent range.

-- 
Bartc

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Why Python is slow thunderbirdmember@gmail.com - 2017-01-24 10:22 -0800
  Re: Why Python is slow Richard Heathfield <rjh@cpax.org.uk> - 2017-01-24 18:33 +0000
  Re: Why Python is slow Richard Heathfield <rjh@cpax.org.uk> - 2017-01-24 20:14 +0000
    Re: Why Python is slow luser droog <luser.droog@gmail.com> - 2017-01-26 10:13 -0800
    Re: Why Python is slow Tim Rentsch <txr@alumni.caltech.edu> - 2017-01-30 05:50 -0800
  Re: Why Python is slow bart4858@gmail.com - 2017-01-24 13:21 -0800
  Re: Why Python is slow BartC <bc@freeuk.com> - 2017-01-24 22:23 +0000
  Re: Why Python is slow "Chris M. Thomasson" <invalid@invalid.invalid> - 2017-01-24 17:11 -0800
    Re: Why Python is slow "Chris M. Thomasson" <invalid@invalid.invalid> - 2017-01-24 19:26 -0800
    Re: Why Python is slow "Chris M. Thomasson" <invalid@invalid.invalid> - 2017-01-25 12:50 -0800
      Re: Why Python is slow BartC <bc@freeuk.com> - 2017-01-25 21:52 +0000
        Re: Why Python is slow "Chris M. Thomasson" <invalid@invalid.invalid> - 2017-01-25 14:30 -0800
          Re: Why Python is slow BartC <bc@freeuk.com> - 2017-01-25 22:59 +0000
            Re: Why Python is slow "Chris M. Thomasson" <invalid@invalid.invalid> - 2017-01-27 13:20 -0800
      Re: Why Python is slow DFS <nospam@dfs.com> - 2017-01-25 19:22 -0500
        Re: Why Python is slow "Chris M. Thomasson" <invalid@invalid.invalid> - 2017-01-26 13:40 -0800
  Re: Why Python is slow David Brown <david.brown@hesbynett.no> - 2017-01-25 10:29 +0100
    Re: Why Python is slow gazelle@shell.xmission.com (Kenny McCormack) - 2017-01-25 10:38 +0000
    Re: Why Python is slow Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-01-26 06:44 -0800
      Re: Why Python is slow Richard Heathfield <rjh@cpax.org.uk> - 2017-01-26 15:00 +0000
        Re: Why Python is slow Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-01-26 17:23 +0000
          Re: Why Python is slow supercat@casperkitty.com - 2017-01-26 09:42 -0800
            Re: Why Python is slow Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-01-26 18:24 +0000
      Re: Why Python is slow David Brown <david.brown@hesbynett.no> - 2017-01-26 16:14 +0100
        Re: Why Python is slow Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-01-26 12:49 -0800
          Re: Why Python is slow Robert Wessel <robertwessel2@yahoo.com> - 2017-01-26 15:11 -0600
          Re: Why Python is slow David Brown <david.brown@hesbynett.no> - 2017-01-26 23:56 +0100
        Re: Why Python is slow Keith Thompson <kst-u@mib.org> - 2017-01-26 15:20 -0800
          Re: Why Python is slow David Brown <david.brown@hesbynett.no> - 2017-01-27 09:31 +0100
      Re: Why Python is slow fir <profesor.fir@gmail.com> - 2017-01-27 07:24 -0800
        Re: Why Python is slow fir <profesor.fir@gmail.com> - 2017-01-27 07:57 -0800
          Re: Why Python is slow fir <profesor.fir@gmail.com> - 2017-01-27 08:46 -0800
        Re: Why Python is slow supercat@casperkitty.com - 2017-01-27 08:06 -0800
          Re: Why Python is slow fir <profesor.fir@gmail.com> - 2017-01-27 08:39 -0800
            Re: Why Python is slow fir <profesor.fir@gmail.com> - 2017-01-27 13:29 -0800
  Re: 3**3**3**3 Noob <root@127.0.0.1> - 2017-01-27 14:33 +0100

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