libra/libra/common/utils.py
2012-10-15 10:03:48 -07:00

30 lines
1.1 KiB
Python

# Copyright 2012 Hewlett-Packard Development Company, L.P.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import importlib
import sys
import traceback
def import_class(import_str):
""" Returns a class from a string including module and class """
mod_str, _sep, class_str = import_str.rpartition('.')
try:
mod = importlib.import_module(mod_str)
return getattr(mod, class_str)
except (ValueError, AttributeError):
raise ImportError('Class %s cannot be found (%s)' %
(class_str,
traceback.format_exception(*sys.exc_info())))