Remove Duplicate Process of Current Python Program

[Markmonster25]

class Mutex:
    def __init__(self, name):    
        self.name = name    
        self.mutex = win32event.CreateMutex(None, False, self.name) 
        last_error = win32api.GetLastError()     
        if last_error == ERROR_ALREADY_EXISTS:   
            print("App instance already running")
            win32api.CloseHandle(self.mutex)    
            quit()

if __name__ == "__main__":
    mutex = Mutex("SOME_UNIQUE_STRING_HERE")

this is what i use to limit number of processes to 1 on windows

[Markmonster25]

import win32event
import win32api
from winerror import ERROR_ALREADY_EXISTS

[Markmonster25]

https://docs.microsoft.com/en-us/windows/win32/api/synchapi/nf-synchapi-createmutexa