def _is_import_binding(node, name, package=None):
    """ Will reuturn node if node will import name, or node
        will import * from package.  None is returned otherwise.
        See test cases for examples. """

    if node.type == syms.import_name and not package:
        imp = node.children[1]
        if imp.type == syms.dotted_as_names:
            for child in imp.children:
                if child.type == syms.dotted_as_name:
                    if child.children[2].value == name:
                        return node
                elif child.type == token.NAME and child.value == name:
                    return node
        elif imp.type == syms.dotted_as_name:
            last = imp.children[-1]
            if last.type == token.NAME and last.value == name:
                return node
        elif imp.type == token.NAME and imp.value == name:
            return node
    elif node.type == syms.import_from:
        # unicode(...) is used to make life easier here, because
        # from a.b import parses to ['import', ['a', '.', 'b'], ...]
        if package and unicode(node.children[1]).strip() != package:
            return None
        n = node.children[3]
        if package and _find(u"as", n):
            # See test_from_import_as for explanation
            return None
        elif n.type == syms.import_as_names and _find(name, n):
            return node
        elif n.type == syms.import_as_name:
            child = n.children[2]
            if child.type == token.NAME and child.value == name:
                return node
        elif n.type == token.NAME and n.value == name:
            return node
        elif package and n.type == token.STAR:
            return node
    return None
Will reuturn node if node will import name, or node
        will import * from package.  None is returned otherwise.
        See test cases for examples.