Re: First Program with Python!

From	BartC <bc@freeuk.com>
Newsgroups	comp.programming
Subject	Re: First Program with Python!
Date	2016-02-10 14:07 +0000
Organization	A noiseless patient Spider
Message-ID	<n9fg1k$jke$1@dont-email.me> (permalink)
References	<56ee81f0-8542-49e5-a177-c7794f2d48d7@googlegroups.com> <n9ct09$phe$1@dont-email.me> <5ef3721a-7b0f-4dfd-8dbf-fac4a7172b94@googlegroups.com>

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On 10/02/2016 00:32, Öö Tiib wrote:
> On Tuesday, 9 February 2016 16:30:19 UTC+2, Richard Heathfield  wrote:
>> On 09/02/16 14:11, anitagoyal571@gmail.com wrote:
>>   > Python is an interpreted language.
>>   > Interpreter is a program that converts the high-level program we
>>   > write into low-level program that the computer understands.
>>
>> That sounds more like a compiler to me.
>
> Good catch. AFAIK Python is simply a programming language without
> requirement that it *must* be interpreted. There even are some
> JIT-compiling Python 3 implementations like PyPy and Pyston.
>

PyPy is such a complex implementation that probably no one knows for 
sure exactly what it is.

 From what I've been able to glean, PyPy is actually an interpreter (and 
an even slower one than CPython), but written in such a way that 
repeated execution paths (through the interpreter apparently, not the 
bytecode being executed) are chosen to be JIT-compiled. So what is 
JIT-compiled, I think, are parts of the interpreter, which is written in 
customised version of Python. It doesn't JIT-compile the user's actual 
program, AFAICT.

It's just a touch confusing.

You can tell from the language anyway that it is completely unsuitable 
for normal 'straight' compilation to native code. So interpretation 
would be the usual start-point.

-- 
Bartc

Thread

First Program with Python! anitagoyal571@gmail.com - 2016-02-09 06:11 -0800
  Re: First Program with Python! Richard Heathfield <rjh@cpax.org.uk> - 2016-02-09 14:30 +0000
    Re: First Program with Python! Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-02-09 14:35 +0000
      Re: First Program with Python! Richard Heathfield <rjh@cpax.org.uk> - 2016-02-09 19:06 +0000
        Re: First Program with Python! Öö Tiib <ootiib@hot.ee> - 2016-02-09 16:55 -0800
          Re: First Program with Python! Richard Heathfield <rjh@cpax.org.uk> - 2016-02-10 09:20 +0000
          Re: First Program with Python! Kaz Kylheku <330-706-9395@kylheku.com> - 2016-02-15 16:49 +0000
    Re: First Program with Python! Öö Tiib <ootiib@hot.ee> - 2016-02-09 16:32 -0800
      Re: First Program with Python! BartC <bc@freeuk.com> - 2016-02-10 14:07 +0000
        Re: First Program with Python! David Brown <david.brown@hesbynett.no> - 2016-02-10 16:24 +0100
          Re: First Program with Python! BartC <bc@freeuk.com> - 2016-02-10 16:55 +0000
            Re: First Program with Python! David Brown <david.brown@hesbynett.no> - 2016-02-11 00:18 +0100
              Re: First Program with Python! BartC <bc@freeuk.com> - 2016-02-11 00:07 +0000
          Re: First Program with Python! Kaz Kylheku <330-706-9395@kylheku.com> - 2016-02-15 16:58 +0000
        Re: First Program with Python! Richard Heathfield <rjh@cpax.org.uk> - 2016-02-10 21:51 +0000
          Re: First Program with Python! BartC <bc@freeuk.com> - 2016-02-11 00:15 +0000
  Re: First Program with Python! Kaz Kylheku <330-706-9395@kylheku.com> - 2016-02-15 16:46 +0000
    Re: First Program with Python! BartC <bc@freeuk.com> - 2016-02-15 17:31 +0000
      Re: First Program with Python! Richard Heathfield <rjh@cpax.org.uk> - 2016-02-15 20:16 +0000
        Re: First Program with Python! BartC <bc@freeuk.com> - 2016-02-15 22:45 +0000
          Re: First Program with Python! Kaz Kylheku <330-706-9395@kylheku.com> - 2016-02-16 03:40 +0000

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