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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def expose(dists):
 """Exposes vendored code in isolated chroots. Any vendored distributions listed in ``dists`` will be unpacked to individual chroots for addition to the ``sys.path``; ie: ``expose(['setuptools', 'wheel'])`` will unpack these vendored distributions and yield the two chroot paths they were unpacked to. :param dists: A list of vendored distribution names to expose. :type dists: list of str :raise: :class:`ValueError` if any distributions to expose cannot be found. :returns: An iterator of exposed vendored distribution chroot paths. """

  from pex.common import safe_delete

  for path in VendorImporter.expose(dists, root=isolated()):
    safe_delete(os.path.join(path, '__init__.py'))
    yield path