How does python work

Re: How does python work

On Thu, 10 Jul 2003 13:05:07 +0200,
Geiregat Jonas <[email protected]> wrote:[color=blue]
> I'm asking myself how Python code get's executed ...
> What happens first etc ...
> First read the file and then ..[/color]

The code is parsed and compiled into bytecode that can then be executed.
Consult a textbook on parsing or programming language implementation for
more details about how parsing is done.

I thought someone (MWH?) wrote an explanation of Python's internals once,
but can't find anything at the moment. The Python docs have some relevant
material (http://www.python.org/doc/current/ext/ext.html), but that document
doesn't concentrate on the implementation details, just on the bits you can
easily access from extensions.
[color=blue]
> also could someone point me to the build in functions in the python source
> code ?[/color]

They're in Python/bltinmodule.c.

--amk
OTHELLO: Once more, well met at Cyprus!
-- _Othello_, II, i

Re: How does python work

"Geiregat Jonas" <[email protected]> wrote in message news:<pan.2003. 07.10.11.05.07. [email protected]>...[color=blue]
> I'm asking myself how Python code get's executed ...
> What happens first etc ...
> First read the file and then ..
> How python handle's variable internally ...
> also could someone point me to the build in functions in the python source
> code ?[/color]

The Python Library Reference has a section on "Built-in Functions,
Types, and Exceptions" at
<http://www.python.org/doc/current/lib/builtin.html>. There is also a
section documenting some rather low level internal modules at
<http://www.python.org/doc/current/lib/language.html>, such as parser,
which lets you access the parse tree, and dis, a disassembler for
python bytecode.

-Peter

Re: How does python work

"A.M. Kuchling" <[email protected]> writes:
[color=blue]
> On Thu, 10 Jul 2003 13:05:07 +0200,
> Geiregat Jonas <[email protected]> wrote:[color=green]
> > I'm asking myself how Python code get's executed ...
> > What happens first etc ...
> > First read the file and then ..[/color]
>
> The code is parsed and compiled into bytecode that can then be executed.
> Consult a textbook on parsing or programming language implementation for
> more details about how parsing is done.
>
> I thought someone (MWH?) wrote an explanation of Python's internals once,
> but can't find anything at the moment.[/color]

I've threatened to do it, but not actually done it.

If you can read C, these things aren't that hard to figure out (though
tags or cscope certainly help...).

Cheers,
M.

--
You owe the Oracle a star-spangled dunce cap.
-- Internet Oracularity Internet Oracularity #1299-08