don't understand popen2

[Fredrik Lundh]

Sion Arrowsmith wrote:

>>>> "F:\coding\pwSync\popen_test\testia.py"
> 'F:\\coding\\pwSync\\popen_test\testia.py'

this might make it more obvious that something's not quite right with that
string literal:

    >>> print "F:\coding\pwSync\popen_test\testia.py"
    F:\coding\pwSync\popen_test     estia.py

</F>