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Re: Why Python is not both an interpreter and a compiler?

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On Mon, Aug 31, 2015 at 6:35 PM, Mahan Marwat <mahanmarwat@gmail.com> wrote:
> What I know about an interpreter and a compiler is: they both convert source code to machine code and the only difference is, an interpreter convert it, line by line while compiler convert the whole source file.
> Now if we compile a C source file on C compiler, it will produce a small executable file. But if we compile (freeze) a Python source file on Python interpreter (using cx_freeze), it will produce a big executable file.
> Now the thing is C compiler does not embed a C compiler inside our program, while the Python interpreter (cx_freeze, pytoexe) embed Python interpreter inside our program, what is the reason?
> The question is, why cx_freeze etc... embed Python interpreter inside our programs, they are unable to produce machine code like C compiler do?
> Cant we program a language, which is both interpreted and compiled? The core developer cant add the compiling functionality to Python?

Compiling is trivially easy for trivial programs, and becomes
virtually impossible for arbitrarily complex and dynamic programs. In
an extreme example, Python includes the ability to execute arbitrary
code:

>>> exec("print('Hello, world!')")
Hello, world!

You basically can't compile that without having the full capabilities
of the Python language. If you want something that makes Python into
an executable binary, you either want a wrapper (like cx_freeze and
pytoexe and so on), or else something like the PyPy project. Check it
out - it's pretty cool!

ChrisA

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Why Python is not both an interpreter and a compiler? Mahan Marwat <mahanmarwat@gmail.com> - 2015-08-31 01:35 -0700
  Re: Why Python is not both an interpreter and a compiler? Chris Angelico <rosuav@gmail.com> - 2015-08-31 18:49 +1000
  Re: Why Python is not both an interpreter and a compiler? Cameron Simpson <cs@zip.com.au> - 2015-08-31 19:59 +1000
  Re: Why Python is not both an interpreter and a compiler? Ben Finney <ben+python@benfinney.id.au> - 2015-08-31 21:41 +1000
    Re: Why Python is not both an interpreter and a compiler? Marko Rauhamaa <marko@pacujo.net> - 2015-08-31 16:39 +0300
      Re: Why Python is not both an interpreter and a compiler? Mahan Marwat <mahanmarwat@gmail.com> - 2015-08-31 10:48 -0700
        Re: Why Python is not both an interpreter and a compiler? Emile van Sebille <emile@fenx.com> - 2015-08-31 10:56 -0700
        Re: Why Python is not both an interpreter and a compiler? Ben Finney <ben+python@benfinney.id.au> - 2015-09-01 09:15 +1000
        Re: Why Python is not both an interpreter and a compiler? Luca Menegotto <otlucaDELETE@DELETEyahoo.it> - 2015-09-01 07:45 +0200
          Re: Why Python is not both an interpreter and a compiler? Ian Kelly <ian.g.kelly@gmail.com> - 2015-09-01 11:21 -0600
        Re: Why Python is not both an interpreter and a compiler? Laura Creighton <lac@openend.se> - 2015-09-01 09:51 +0200
        Re: Why Python is not both an interpreter and a compiler? Steven D'Aprano <steve@pearwood.info> - 2015-09-02 01:20 +1000
          Re: Why Python is not both an interpreter and a compiler? Marko Rauhamaa <marko@pacujo.net> - 2015-09-01 19:20 +0300
            Re: Why Python is not both an interpreter and a compiler? Chris Angelico <rosuav@gmail.com> - 2015-09-02 03:06 +1000
            Re: Why Python is not both an interpreter and a compiler? Laura Creighton <lac@openend.se> - 2015-09-01 19:33 +0200
              Re: Why Python is not both an interpreter and a compiler? Marko Rauhamaa <marko@pacujo.net> - 2015-09-01 23:08 +0300
                Re: Why Python is not both an interpreter and a compiler? Chris Angelico <rosuav@gmail.com> - 2015-09-02 10:50 +1000
                Re: Why Python is not both an interpreter and a compiler? Laura Creighton <lac@openend.se> - 2015-09-02 09:09 +0200
                Re: Why Python is not both an interpreter and a compiler? wxjmfauth@gmail.com - 2015-09-02 01:25 -0700
            Re: Why Python is not both an interpreter and a compiler? Laura Creighton <lac@openend.se> - 2015-09-01 19:52 +0200
            Re: Why Python is not both an interpreter and a compiler? Steven D'Aprano <steve@pearwood.info> - 2015-09-02 12:49 +1000
              Re: Why Python is not both an interpreter and a compiler? Marko Rauhamaa <marko@pacujo.net> - 2015-09-02 06:58 +0300
              Re: Why Python is not both an interpreter and a compiler? Jussi Piitulainen <harvesting@makes.address.invalid> - 2015-09-02 08:59 +0300
  Re: Why Python is not both an interpreter and a compiler? Michael Torrie <torriem@gmail.com> - 2015-09-01 21:46 -0600

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