gui.py 文件源码

def start_viewer():
    cmd = [sys.executable, '-m', 'bag.io.gui']
    devnull = open(os.devnull, 'w')
    proc = subprocess.Popen(cmd, stdin=subprocess.PIPE, stdout=devnull,
                            stderr=subprocess.STDOUT,
                            preexec_fn=os.setpgrp)
    return proc