Re: os.startfile hanging onto the launched app, or my IDE?

2014-06-10 Thread Ethan Furman

On 06/09/2014 09:46 PM, Tim Golden wrote:

On 09/06/2014 23:31, Ethan Furman wrote:

On 06/09/2014 03:21 PM, Josh English wrote:


So this quirk is coming from PyScripter, which is a shame, because I
don't think it's under development, so it won't be fixed.


The nice thing about Python code is you can at least fix your copy.  :)


IIRC, PyScripter is actually written in Delphi!


Ah, well, in that case forget I spoke.  :/

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Re: os.startfile hanging onto the launched app, or my IDE?

2014-06-09 Thread Josh English
On Saturday, June 7, 2014 1:24:43 PM UTC-7, Tim Golden wrote:

 I'm not 100% sure what your scenario is, but you can certainly help 
 yourself and us by running the same test on the raw interpreter and then 
 under PyScripter to determine if the behaviour is to do with IDLE or 
 with Python itself.
 
 My half-guess is that PyScripter starts a new process to run your code, 
 possibly killing any pre-existing process first. That's if I've 
 understood the situation you're describing.
 
 
 Could you come back with a little more detail? Specifically: whether 
 what you're seeing happens only from within PyScripter, or only not from 
 within PyScripter, or something else?
 

I think you're right about PyScripter controlling the process. I don't run 
scripts through the command line as a matter of practice. 

But I just tried running my script through the command line, with Excel closed, 
and it opened the Excel file just as I expected. Then I went back to the 
command line and ran it again, and it didn't close Excel. It gave me the error 
I was expecting from zipfile not being able to access the file (because it is 
currently open).

I even left it open and ran another script that also creates and launches an 
Excel workbook, and it again did not close Excel.

So this quirk is coming from PyScripter, which is a shame, because I don't 
think it's under development, so it won't be fixed.

Josh

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Re: os.startfile hanging onto the launched app, or my IDE?

2014-06-09 Thread Ethan Furman

On 06/09/2014 03:21 PM, Josh English wrote:


So this quirk is coming from PyScripter, which is a shame, because I don't 
think it's under development, so it won't be fixed.


The nice thing about Python code is you can at least fix your copy.  :)

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Re: os.startfile hanging onto the launched app, or my IDE?

2014-06-09 Thread Tim Golden

On 09/06/2014 23:31, Ethan Furman wrote:

On 06/09/2014 03:21 PM, Josh English wrote:


So this quirk is coming from PyScripter, which is a shame, because I
don't think it's under development, so it won't be fixed.


The nice thing about Python code is you can at least fix your copy.  :)


IIRC, PyScripter is actually written in Delphi!

TJG

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Re: os.startfile hanging onto the launched app, or my IDE?

2014-06-08 Thread Ian Kelly
On Fri, Jun 6, 2014 at 2:34 PM, Josh English joshua.r.engl...@gmail.com wrote:
 I have been using os.startfile(filepath) to launch files I've created in 
 Python, mostly Excel spreadsheets, text files, or PDFs.

 When I run my script from my IDE, the file opens as I expect. But if I go 
 back to my script and re-run it, the external program (either Excel, Notepad, 
 or Acrobat Reader) closes all windows and restarts the program. This can, 
 unfortunately, close other files I am working on and thus I lose all my 
 changes to those files.

 This is happening on Windows 7.

 I am not sure if it is Python (2.7.5) or my IDE (PyScripter 2.5.3).

 It seems like Python or the IDE is keeping track of things created by the 
 os.startfile call, but the docs imply this doesn't happen.

 Is this a quirk of os.startfile? Is there a cleaner way to get Windows to 
 open files without tying back to my program?

That sounds unusual.  Do you see the same behavior with the shell
start command?  My first guess would be that this is due to some
registry setting rather than Python, which pretty much just calls
ShellExcecute.
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Re: os.startfile hanging onto the launched app, or my IDE?

2014-06-07 Thread Tim Golden

On 06/06/2014 21:34, Josh English wrote:

I have been using os.startfile(filepath) to launch files I've created
in Python, mostly Excel spreadsheets, text files, or PDFs.

When I run my script from my IDE, the file opens as I expect. But if
I go back to my script and re-run it, the external program (either
Excel, Notepad, or Acrobat Reader) closes all windows and restarts
the program. This can, unfortunately, close other files I am working
on and thus I lose all my changes to those files.

This is happening on Windows 7.

I am not sure if it is Python (2.7.5) or my IDE (PyScripter 2.5.3).

It seems like Python or the IDE is keeping track of things created by
the os.startfile call, but the docs imply this doesn't happen.

Is this a quirk of os.startfile? Is there a cleaner way to get
Windows to open files without tying back to my program?


I'm not 100% sure what your scenario is, but you can certainly help 
yourself and us by running the same test on the raw interpreter and then 
under PyScripter to determine if the behaviour is to do with IDLE or 
with Python itself.


My half-guess is that PyScripter starts a new process to run your code, 
possibly killing any pre-existing process first. That's if I've 
understood the situation you're describing.


Could you come back with a little more detail? Specifically: whether 
what you're seeing happens only from within PyScripter, or only not from 
within PyScripter, or something else?


TJG
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os.startfile hanging onto the launched app, or my IDE?

2014-06-06 Thread Josh English
I have been using os.startfile(filepath) to launch files I've created in 
Python, mostly Excel spreadsheets, text files, or PDFs. 

When I run my script from my IDE, the file opens as I expect. But if I go back 
to my script and re-run it, the external program (either Excel, Notepad, or 
Acrobat Reader) closes all windows and restarts the program. This can, 
unfortunately, close other files I am working on and thus I lose all my changes 
to those files.

This is happening on Windows 7. 

I am not sure if it is Python (2.7.5) or my IDE (PyScripter 2.5.3).

It seems like Python or the IDE is keeping track of things created by the 
os.startfile call, but the docs imply this doesn't happen.

Is this a quirk of os.startfile? Is there a cleaner way to get Windows to open 
files without tying back to my program?

Thanks,

Josh
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