def import_by_path(dotted_path, error_prefix=''):
    try:
        module_path, class_name = dotted_path.rsplit('.', 1)
    except ValueError:
        raise ImproperlyConfigured("%s%s doesn't look like a module path" % (
            error_prefix, dotted_path))
    try:
        module = import_module(module_path)
    except ImportError as e:
        msg = '%sError importing module %s: "%s"' % (
            error_prefix, module_path, e)
        six.reraise(ImproperlyConfigured, ImproperlyConfigured(msg),
                    sys.exc_info()[2])
    try:
        attr = getattr(module, class_name)
    except AttributeError:
        raise ImproperlyConfigured('%sModule "%s" does not define a "%s" attribute/class' % (
            error_prefix, module_path, class_name))
    return attr
file name
dataset/ETHPy150Open danirus/django-comments-xtd/django_comments_xtd/compat.py/import_by_path--crossover with--dataset/ETHPy150Open mockfs/mockfs/mockfs/storage.py/file.name