launch .exe from python script in windows

[hary]

Hi

I'm trying to launch a .exe program with a python3.6 script.
I usualy launch my program.exe using command line "cmd" with 5 arguments as follow :


C:\Users\Harold>"C:\Program Files (x86)\EGSesameTriangle\Debug\EGSesameTriangle.exe" 200 1.5 20 80 100

I've tried differnt things with no success !
WIth the 5 arguments:

# python3
# launch_SESAME.py launch SESAME
import subprocess
subprocess.Popen([r"cmd"])
subprocess.Popen([r'"C:\Program Files (x86)\EGSesameTriangle\Debug\EGSesameTriangle.exe" 500 1.5 20 80 200'])

Error:
Traceback (most recent call last):
  File "C:\Python35-32\launch_SESAME.py", line 9, in <module>
    subprocess.Popen([r'"C:\Program Files (x86)\EGSesameTriangle\Debug\EGSesameTriangle.exe" 500 1.5 20 80 200'])
  File "C:\Python35-32\lib\subprocess.py", line 707, in __init__
    restore_signals, start_new_session)
  File "C:\Python35-32\lib\subprocess.py", line 990, in _execute_child
    startupinfo)
PermissionError: [WinError 5] Accès refusé
Microsoft Windows [version 10.0.14393]
(c) 2016 Microsoft Corporation. Tous droits réservés.

With no arguments : the program behave the same way I would have launched it with cmd command line without providing the arguments !

import subprocess
subprocess.Popen([r"cmd"])
subprocess.Popen([r'C:\Program Files (x86)\EGSesameTriangle\Debug\EGSesameTriangle.exe'])

Error:
EGSesame
 Generateur de creneaux via Instrunet pour obturateur Sesame, normalises DNI.
 Alterne entre 2 phases ou positions du Sesame avec un profil triangle. EG 27 octobre 2016

 UTILISATION: EGSesame [gradient_chauffe duree_cyclage niveau1 niveau2 gradient_niveaux]
  gradient_chauff : gradient en pourcents par minute, jusqu'au niveau de phase le plus bas. Ex: 500
  Duree du cyclage : en heure. Ex: 1.5 pour 1h30
  Niveaux des phases: exprime en pourcent du Sesame, de 0.0 a 100.0 (ouvert).
  gradient_niveaux : gradient en pourcents par minute, entre les 2 niveaux. Ex: 100

ATTENTION: Pas ou mauvais arguments donnes, reglages par defaut.

Microsoft Windows [version 10.0.14393]
(c) 2016 Microsoft Corporation. Tous droits réservés.

I'm a total beginner.
Any advice or link welcome.

[j.crater]

Hello,
usually this happens because program wasn't launched with administrator rights. So if you can, run the Python script as administrator.

[zivoni]

You cant execute directly program and parameters in one string with Popen - it tries to run command named "program parameter" and there is no such program. You can either split parameters and use ['program', 'parameter/parameters',... 'parameter'] or let python execute entire string within shell/cmd with parameter shell=True. Latter one is easier to use (or abuse).

Output:
In [2]: subprocess.Popen("/bin/echo 10")

---------------------------------------------------------------------------
FileNotFoundError                         Traceback (most recent call last)
.... 
FileNotFoundError: [Errno 2] No such file or directory: '/bin/echo 10'

In [3]: subprocess.Popen(["/bin/echo", "10"])
10
Out[3]: <subprocess.Popen at 0x7fa1f1d8a940>

In [4]: subprocess.Popen("/bin/echo 10", shell=True)
Out[4]: 10

You are not catching output of your program, if you want to do it, you can use Popen with stdout=subprocess.PIPE or run you program with subprocess.check_output().

[hary]

Hello,
usually this happens because program wasn't launched with administrator rights. So if you can, run the Python script as administrator.

No change to run the script as administrator !

---

You cant execute directly program and parameters in one string with Popen - it tries to run command named "program parameter" and there is no such program. You can either split parameters and use ['program', 'parameter/parameters',... 'parameter'] or let python execute entire string within shell/cmd with parameter shell=True. Latter one is easier to use (or abuse).

Output:
In [2]: subprocess.Popen("/bin/echo 10")

---------------------------------------------------------------------------
FileNotFoundError                         Traceback (most recent call last)
.... 
FileNotFoundError: [Errno 2] No such file or directory: '/bin/echo 10'

In [3]: subprocess.Popen(["/bin/echo", "10"])
10
Out[3]: <subprocess.Popen at 0x7fa1f1d8a940>

In [4]: subprocess.Popen("/bin/echo 10", shell=True)
Out[4]: 10

You are not catching output of your program, if you want to do it, you can use Popen with stdout=subprocess.PIPE or run you program with subprocess.check_output().

Sorry but as I said, I'm a total beginner and what you say is not really helpfull as not intelligible for me.

subprocess.Popen("/bin/echo 10")

and

subprocess.Popen(["/bin/echo", "10"])

and

subprocess.Popen("/bin/echo 10", shell=True)

give me all the same error !

[zivoni]

Those was just examples of command with parameter  and as it was linux command, it couldn't work for you on windows machine.

What i ment was to try either

subprocess.Popen(r'"C:\Program Files (x86)\EGSesameTriangle\Debug\EGSesameTriangle.exe" 500 1.5 20 80 200', shell=True)

or

subprocess.Popen([r'"C:\Program Files (x86)\EGSesameTriangle\Debug\EGSesameTriangle.exe"', "500", "1.5", "20",  "80", "200"])

(if i got your command/parameters right)

[Ofnuts]

Those was just examples of command with parameter  and as it was linux command, it couldn't work for you on windows machine.

What i ment was to try either

subprocess.Popen(r'"C:\Program Files (x86)\EGSesameTriangle\Debug\EGSesameTriangle.exe" 500 1.5 20 80 200', shell=True)

or

subprocess.Popen([r'"C:\Program Files (x86)\EGSesameTriangle\Debug\EGSesameTriangle.exe"', "500", "1.5", "20",  "80", "200"])

(if i got your command/parameters right)

You've got a bunch of extra quotes around the executable name:

subprocess.Popen([r'C:\Program Files (x86)\EGSesameTriangle\Debug\EGSesameTriangle.exe', "500", "1.5", "20",  "80", "200"])

[zivoni]

I remembered that ages ago commands with spaces in name were run in windows terminal like "C:\Program Files\dir name\boo.exe", so I kept OP's double quotes :), but yes, here it is different thing (probably).

[hary]

@zivoni


get the following errors

Error:
Python 3.6.0 (v3.6.0:41df79263a11, Dec 23 2016, 07:18:10) [MSC v.1900 32 bit (Intel)] on win32
Type "copyright", "credits" or "license()" for more information.
>>> 
================== RESTART: C:\Python35-32\launch_SESAME.py ==================
Traceback (most recent call last):
  File "C:\Python35-32\launch_SESAME.py", line 11, in <module>
    subprocess.Popen(r'"C:\Program Files (x86)\EGSesameTriangle\Debug\EGSesameTriangle.exe" 500 1.5 20 80 200', shell=True)
  File "C:\Python35-32\lib\subprocess.py", line 707, in __init__
    restore_signals, start_new_session)
  File "C:\Python35-32\lib\subprocess.py", line 990, in _execute_child
    startupinfo)
FileNotFoundError: [WinError 2] Le fichier spécifié est introuvable
>>> 

Error:
Traceback (most recent call last):
  File "C:\Python35-32\launch_SESAME.py", line 12, in <module>
    subprocess.Popen([r'"C:\Program Files (x86)\EGSesameTriangle\Debug\EGSesameTriangle.exe"', "500",  "1.5",  "20",  "80",  "200"])
  File "C:\Python35-32\lib\subprocess.py", line 707, in __init__
    restore_signals, start_new_session)
  File "C:\Python35-32\lib\subprocess.py", line 990, in _execute_child
    startupinfo)
PermissionError: [WinError 5] Accès refusé

[Ofnuts]

For the second thing, see my remark about the extra quotes.

When having such errors, make it simple. Change the code to start some known executable (say, notepad.exe). Once you have got that working, change to your executable, then use your parameters...