[Tutor] interpreter restarts

Tue Jul 17 18:00:31 CEST 2007

<upon successful ssh into some machine, assuming BASH...>

$ who am i
unohoo
$ which python
/usr/bin/python
$ python
Python 2.3.4 (#1, Mar 20 2006, 00:23:47)
[GCC 3.4.5 20051201 (Red Hat 3.4.5-2)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
 >>> print 1
1
 >>> help()
<yada yada>
help> quit
 >>> <CTRL D>
$

$ vi doit.py
<up comes vi or vim or some such, you type python code, then :wq>
$ ls
doit.py
$ python doit.py
<output of your program or error messages or both>
$

On Jul 17, 2007, at 8:14 AM, Eric Brunson wrote:

>
> Sara,
>
> Stick with ssh, IDE's are a crutch.  ;-)
>
> But that's just my opinion, others may differ.
>
> However, if you were running an X server on your local machine, you
> could use SSH to allow you to run GUI programs from your remote server.
> There are a couple of free X servers for Windoze, but running Linux on
> your local machine would give you the greatest success.  If you are
> interested in pursuing this, google up and install an X server, then
> post back.
>
> Sincerely,
> e.
>
> Sara Johnson wrote:
>> Luke, Jacob, et. al...
>>
>> Dumb question (may be slightly off course from what you two were
>> discussing), but are you both describing how to get the IDLE to run
>> along with the editor?  I may just be getting too many things
>> confused.  I've tried to run IDLE, but that's not working.  I have the
>> same function through opening it separately from the Start menu but
>> then it doesn't work as IDLE should work with the editor (or so I've
>> been told that happens).  I can type the word Python in my editor and
>> it comes up, but then the editor is gone.  I've gone so long with just
>> SSH, but at this point it's worth it if I find a way that makes
>> sense.  As someone mentioned from this list, at least it'll be code
>> that is easier to read for a newbie like myself.
>>
>> (Hope that didn't confuse or cause unnecessary headaches...)
>>
>> Sara
>>
>> ----- Original Message ----
>> From: Luke Paireepinart <rabidpoobear at gmail.com>
>> To: Tiger12506 <keridee at jayco.net>
>> Cc: tutor at python.org
>> Sent: Monday, July 16, 2007 7:00:53 PM
>> Subject: Re: [Tutor] interpreter restarts
>>
>> Tiger12506 wrote:
>>>> But there's an exception to that - if you right-click a file in  
>>>> Windoze
>>>> and 'edit' it,
>>>> IDLE won't open up its subprocess, and as such, it can't restart the
>>>> interpreter session because it's running in the same
>>>> process as IDLE, and to restart the interpreter would mean  
>>>> restarting
>>>> IDLE.
>>>> Boy, that 'edit with idle' thing sure does cause some problems,
>> don't it?
>>>> :)
>>>> -Luke
>>>>
>>>
>>> Thanks, Luke. I hadn't thought of that. Question: Why won't IDLE
>> open up its
>>> subprocess?
>>>
>>> This is the command that is in the registry concerning the Edit with
>> IDLE
>>> menu.
>>> "C:\Python25\pythonw.exe" "C:\Python25\Lib\idlelib\idle.pyw" -n -e  
>>> "%1"
>>>
>>> This is the Target for the shortcut in the Start Menu (Note: the
>> Target box
>>> was disabled!)
>>> Python 2.5.1
>>>
>>> I thought that this was incredibly strange, so I opened this
>> shortcut in a
>>> hex editor to see what was different about this shortcut. (Normally,
>> they
>>> have a path in the target box)
>>>
>>> What I found surprised me. The title of the file in the hex editor  
>>> said
>>> "python_icon.exe"
>>> I started laughing maniacally and checked the full path of the file
>> from
>>> within the hex editor.
>>>
>> C:\windows\installer\{31800004-6386-4999-a519 
>> -518f2d78d8f0}\python_icon.exe
>>>
>>> IDLE is started in two *very* different ways. So my next question
>> was: Can
>>> you pass arguments to this python_icon.exe? Simple navigations to  
>>> that
>>> directory and a confirmation... Yuck. You can't even execute it from
>>> explorer. A low-level ZwTerminateProcess function from ntdll is
>> called ...
>>> Let me try something...
>>>
>>> Woah... {31800004-6386-4999-a519-518f2d78d8f0} appears in the
>> registry in
>>> alot of places. The Uninstall key for Add/Remove Programs, some
>> weird data
>>> thing... Okay, this is beyond me. I don't know the registry or
>> understand
>>> CLSIDs very well. Someone who knows Windows inside and out has done
>> a number
>>> with the python installer, or at least the msi installer does this  
>>> all
>>> automatically. Interesting. I wonder just how python_icon.exe starts
>> IDLE.
>>> If I could figure that out, I could emulate it with the Edit w/Idle
>> menu
>>> item and get IDLE to start a subprocess! But how.... any ideas?
>>>
>> It sounds like python_icon.exe is a fake executable that just contains
>> the icon for python programs...
>> hence the name.
>> You probably stumbled across the path to the icon to use, instead of  
>> the
>> path that is used when running the 'Edit with IDLE' thing.
>> Try this:
>> open an Explorer window, via Start Button -> Run -> explorer {ENTER}
>> or your favorite method.  Use the My Computer shortcut if you want,
>> either way.
>> Now hit "Alt, t, o" to browse to the Tools -> Folder Options menu  
>> setting.
>> Go to the File Types tab, and scroll down till you find "PY"
>> click the Advanced button.
>> You should now see a dialog box with Edit with IDLE listed under  
>> actions.
>> Click Edit when "Edit with IDLE" is selected.
>> in the "Application used to perform action:" field you should see
>> something like this:
>>
>> "C:\Python24\pythonw.exe" "C:\Python24\Lib\idlelib\idle.pyw" -n -e  
>> "%1"
>>
>> Basically, this is the same as saying:
>> python idle.py
>> except it's more verbose because python may not be on your path (and
>> pythonw is used instead of python so there's no dos box)
>> As you will notice, there are some parameters there at the end.
>> the -n is the one you're interested in .
>> -n means no subprocess.
>> Just remove that, and you will have a subprocess on the 'Edit with  
>> IDLE'
>> feature.
>> There is some caveat here - it doesn't work correctly on some systems,
>> I'm told.
>> I've never had problems changing this, but I don't recommend it to
>> people randomly just in case it were to cause problems for them.
>> Then I'd feel bad.
>> But since you asked, I thought I'd give you all the info you need.
>> HTH,
>> -Luke
>> P.S. nice detective skillz ;)
>> _______________________________________________
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>> http://mail.python.org/mailman/listinfo/tutor
>>
>>
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