How to create a file in one directory?

Question

How to create a file in python in one directory up without using the full path?

I need a way that worked for both windows and linux.

Thank.

Answer 1

Use os.pardir (which is probably always ".." )

 import os fobj = open(os.path.join(os.pardir, "filename"), "w") 

Answer 2

People don't seem to understand this, but Python is happy to accept the slash even on Windows. This works great on all platforms:

 fobj = open("../filename", "w") 

Answer 3

Depends on whether you work in a unix or windows environment.

In the windows:

 ..\foo.txt 

On unix as OS:

 ../foo.txt 

you need to make sure that os sets the current path correctly when starting the application. Take the appropriate path and just create a file there.