def visit_import(self, node):
        '''triggered when an import statement is seen'''
        module_filename = node.root().file
        if fnmatch.fnmatch(module_filename, '__init__.py*') and \
                not fnmatch.fnmatch(module_filename, 'test_*.py*'):
            return
        modnode = node.root()
        names = [name for name, _ in node.names]

        for name in names:
            self._check_blacklisted_module(node, name)
triggered when an import statement is seen