subprocess.call makes unwanted action

LetzerWille 0
Viewed 29

I run this function to make moving files finish before other script lines are read. When I move video files subprocess.call moves and plays the video.

I what to avoid playing. How can I do that. There is an option to send output to NULL. stdout=subprocess.DEVNULL. But it did not help.

    def move_files_while_script_waits(src, dest):
        try:
            for a_file in os.listdir(src):
                old_place = os.path.join(src, a_file)
                new_place = os.path.join(dest, a_file)
                subprocess.call(shutil.move(old_place, new_place),shell=True)
        except Exception as e:
            print(e)
subprocess python-3.x
2 Answers

Maybe you don't need shutil.move, perhaps ?

Try this :

def move_files_while_script_waits(src, dest):
    try:
        for a_file in os.listdir(src):
            old_place = os.path.join(src, a_file)
            new_place = os.path.join(dest, a_file)
            subprocess.call(["powershell", "-Command", fr"mv {old_place} {new_place}"])

    except Exception as e:
        print(e)
abokey0 
subprocess.call(shutil.move(old_place, new_place),shell=True)

Is doing two things:

  1. shutil.move(old_place, new_place) moves the file to the new location
  2. subprocess.call(..., shell=True) on the return value of shutil.move (the path to the destination file) is likely recognizing specific file extensions for video files and launching them with the default handler application.

If you don't want to play the files, just get rid of subprocess.call, changing the line to:

shutil.move(old_place, new_place)

which will move the files on its own (it's not an external utility, so subprocess isn't needed to move the files at all), and not try to "invoke" them for the Windows definition of "running" video files.

ShadowRanger0
Related