pythonservice.exe can't be updated if a python service is already running

[zcc0077]

Note that issues in this repository are only for bugs or feature requests in the pywin32.

There is a problem, I need to install multiple python script services, I installed the first one is fine, the output is:

Installing service Service1 
copying host exe 'C:\Python311\Lib\site-packages\win32\pythonservice.exe' -> 'C:\Python311\pythonservice.exe' 
Service installed 

When I install another service, I get an error:

Installing service Service2 
copying host exe 'C:\Python311\Lib\site-packages\win32\pythonservice.exe' -> 'C:\Python311\pythonservice.exe' 
Error installing service: The process cannot access the file because it is being used by another process. (32) 

I found that because C:\Python311\pythonservice.exe is occupied by the first service, it cannot be copied successfully. In this case, I can only stop the previous service and then install other services, which will make my service deployment very troublesome (I did not have this problem when using python2 before).

• Steps to reproduce the problem.
  Install & start one service and install another service
• Version of Python and pywin32
  Python 3.11.8 & pywin32-306

[Mark Hammond]

The reason this is done is because you might have upgraded pywin32 and trying to use a new pywin32 with an old .exe is going to end badly. An option would be to add a command-line param to the service install code to skip this step, which I'd be happy to take a PR for.

[zcc0077]

Thanks a lot :), I fixed temporarily by explicitly assign exe to _exe_name_ and no copy action was executed:

class MySrv(win32serviceutil.ServiceFramework):   
    _svc_name_ = "MySrv"  
    _svc_display_name_ = "My Service"
    _exe_name_ = "C:/Python311/Lib/site-packages/win32/pythonservice.exe"
    
    def __init__(self, args):
        win32serviceutil.ServiceFramework.__init__(self, args)
        self.hWaitStop = win32event.CreateEvent(None, 0, 0, None)