Dylink doesn't allow us to call functions that start with '_'

[choksi81]

If we import a file using dylink, it won't allow us to call functions that start with an underscore. This is different from how python import works. Not sure if this is an intended behaviour or not. Below is a piece of code that fails.

foo.py:

def _foo():
    print "foo"

bar.py:

from repyportability import *
add_dy_support(locals())

foo = dy_import_module("foo.py")

try:
  foo._foo()
except AttributeError, err:
  print "Unable to call foo._foo() when using dylink.\n" + str(err)

import foo
foo._foo()

If we run bar.py, we get the following error when calling foo._foo() (when using dylink):

monzum@TestUbuntu:$ python bar.py 
Unable to call foo._foo() when using dylink.
ImportedModule instance has no attribute '_foo'

However once we use 'import' to import it, we are able to call foo._foo().