pyimport_test.sh

#!/usr/bin/env bash

mkdir -p a/b/c

touch {a,a/b,a/b/c}/__init__.py

cat >a/b/c/d.py<<EOF
class e(object):
 pass
EOF

cat >a/b/__init__.py<<EOF
from c.d import e
EOF

python -c "import a.b.c.d; print a.b.e is a.b.c.d.e"

python -c "from a.b.c.d import e; from a.b.c import d; print d.e is e"

PYTHONPATH=`pwd`/a python -c "import a.b.c.d; import b.c.d; print a.b.c.d.e is b.c.d.e"

python -c "import a.b.c.d; import imp; print a.b.c.d.e is imp.load_module('a.b.c.d', *imp.find_module('d', ['a/b/c'])).e"

python -c "import a.b.c.d; print a.b.c.d.e is __import__('a.b.c.d').b.c.d.e"

rm -r a