2922ba0b88
Includes these commits: 3948aee Highlighting the deprecated nature of 'log-format'. b21fc56 Fix bad default for show_deleted d28fa69 python3: Add python3 compatibility. 0bf03b7 Add network_utils.urlsplit e456727 Remove useless logging in networks_utils 7119e29 Enable hacking H404 test. b41862d Use param keyword for docstrings 2f01388 Use Python 3.x compatible except construct e3545f8 Enable hacking H402 test 484a1df Enable hacking H403 test 35660da Enable hacking H401 test 874249e Add support for requirements.txt. b135234 Remove the notifier and its dependencies from log.py 926b3e9 Fixes import order nits Changes which may look not look so harmless: - the common get_admin_context() method is not used by Nova - network_utils.urlsplit() is added but not used yet - suppport for requirements.txt is added to patch_tox_venv but actually it doesn't use those files Change-Id: I03e67f4648dcaf57620f11e63cfd8e7dbe3665cb
69 lines
2.2 KiB
Python
69 lines
2.2 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2011 OpenStack Foundation.
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""
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Import related utilities and helper functions.
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"""
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import sys
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import traceback
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def import_class(import_str):
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"""Returns a class from a string including module and class."""
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mod_str, _sep, class_str = import_str.rpartition('.')
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try:
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__import__(mod_str)
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return getattr(sys.modules[mod_str], class_str)
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except (ValueError, AttributeError):
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raise ImportError('Class %s cannot be found (%s)' %
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(class_str,
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traceback.format_exception(*sys.exc_info())))
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def import_object(import_str, *args, **kwargs):
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"""Import a class and return an instance of it."""
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return import_class(import_str)(*args, **kwargs)
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def import_object_ns(name_space, import_str, *args, **kwargs):
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"""Tries to import object from default namespace.
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Imports a class and return an instance of it, first by trying
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to find the class in a default namespace, then failing back to
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a full path if not found in the default namespace.
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"""
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import_value = "%s.%s" % (name_space, import_str)
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try:
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return import_class(import_value)(*args, **kwargs)
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except ImportError:
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return import_class(import_str)(*args, **kwargs)
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def import_module(import_str):
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"""Import a module."""
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__import__(import_str)
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return sys.modules[import_str]
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def try_import(import_str, default=None):
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"""Try to import a module and if it fails return default."""
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try:
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return import_module(import_str)
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except ImportError:
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return default
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