Experimental Python-based shell

[Prasad, Ramit]

(A little quoting manipulation to make it easier to read with
appropriate context.)

> > On Wed, Oct 3, 2012 at 11:25 AM, Amirouche Boubekki <amirouche.boubekki at gmail.com> wrote:
> >
> 2012/10/3 Jonathan Hayward <jonathan.hayward at pobox.com>
> > > The chief benefit besides the searching, so far, is that you can use Py3k mixed with shell commands as the
> > > scripting language--so script in Python instead of bash.
> > >
> > > When using Python for scripting, Python lines are indented by an extra tab (or four spaces) while shell-like
> > > commands are not indented. So:
> 
> > > cjsh>     for index in range(10):
> > > ----> echo %(index)d
> > > ---->
> > > 0
> > > 1
> > > 2
[snip]
> > 
> > > Echo could (and maybe should) be a built-in, but it isn't. The output is os.system()'ed to bash, which echoes
> > > based on a command that includes the value of a Python variable. The implementation is a bit crude, but it is
> > reasonably powerful.
> > > 
> > > I have other things on the agenda, like making it able to run scripts and doing fuzzy matching, but for now
> > > those are the main two attractions.
> > 

> > Is it possible to drop completly the bash syntax and use some python library (I saw it on github) that wraps
> > bash commands with python functions or the other around making it possible to call python functions with a bash-
> > like syntax. The syntax you are talking about seems strange.
> > 
> > Regards,
> > 
> > Amirouche

Jonathan Hayward wrote:
> I am open to suggestions and patches. I don't think the syntax strange, though: it offers a clear and distinct
> way to differentiate Python and shell commands, and shell commands can access Python variables when specified.
> And it is a simple rule, without footnotes needed.

I need more footnotes. :) Does every shell command not have indentation? 
How can you tell if the shell command is supposed to be in the loop or after
the loop?

    for index in range(10):
        # do something
echo %(index)d

Is the above equivalent to Python pseudo-code solution A or B?

Solution A,
for index in range(10):
    #do something
Popen('echo', file_path)

Solution B,
for index in range(10):
    #do something
    Popen('echo', file_path)

How do I make achieve the other solution?


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