circular imports

[qhfgva at gmail.com]

All of the __init__.py files are empty and I don't know of any
overlapping of names.  Like I said this is code that works fine, I'm
just trying to clean up some things as I go.  Here are my working
examples:

x1.py
======
# how things work in our code now:
# called with home/dlee/test/module python aaa/x1.py
import sys
sys.path.append('/home/dlee/test/module')

import x2

def goo():
    print 'hi from goo'

if __name__ == '__main__':
    x2.foo()

x2.py
======
import sys
sys.path.append('/home/dlee/test/module')
import x1

def foo():
    print 'entered foo'
    x1.goo()


y1.py
======
# this works but is not quite what I want
# called with "PYTHONPATH=$PYTHONPATH:/home/dlee/test/module python
aaa/y1.py"

import aaa.y2

def goo():
    print 'hi from goo'

if __name__ == '__main__':
    aaa.y2.foo()


y2.py
======
import aaa.y1

def foo():
    print 'entered foo'
    aaa.y1.goo()


z1.py
======
# how I'd like things to work, but is failing for me
# called with "PYTHONPATH=$PYTHONPATH:/home/dlee/test/module python
aaa/z1.py"

from aaa import z2

def goo():
    print 'hi from goo'

if __name__ == '__main__':
    z2.foo()


z2.py
======
om aaa import z1

def foo():
    print 'entered foo'
    z1.goo()




w1.py
======
# this would also be acceptible
# called with "PYTHONPATH=$PYTHONPATH:/home/dlee/test/module python
aaa/w1.py"

import aaa.w2 as w2

def goo():
    print 'hi from goo'

if __name__ == '__main__':
    w2.foo()


w2.py
======
import aaa.w1 as w1

def foo():
    print 'entered foo'
    w1.goo()