Qt for Python (PySide/Shiboken)

Hi people.. I need a help. I need to get value of TextLine and the value is a path with program .extension... for example: C:/Program Files/Program.fdb But when I passed this value to a command in subprocess.Popen, this doesnt work. I believe because the value is C:/Program Files/Program.fdb and should like C:\\Program Files\\Program.fdb How to solve this ?