gistfile1.txt

eugeny@eugeny-thinkpad ~/tmp> find | grep -v pyc
.
./a
./a/__init__.py
./b
./b/__init__.py
./p.py
eugeny@eugeny-thinkpad ~/tmp> cat a/__init__.py
def foo():
        pass

print 'a imported'
eugeny@eugeny-thinkpad ~/tmp> cat b/__init__.py
from a import foo
print 'in b'
eugeny@eugeny-thinkpad ~/tmp> cat p.py 
import b
eugeny@eugeny-thinkpad ~/tmp> python p.py 
a imported
in b