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Add a Singleton metaclass, use it with Display (#48935)

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* Add a Singleton class, use it with Display

* update six import

* Move remaining failes to display singleton

* Fix rebase issues

* Singleton improvements

* Add code-smell for 'from __main__ import display'. ci_complete

* s/self/cls/g

* Add docs for no-main-display

* Address linting issues

* Add changelog fragment. ci_complete

* Implement reentrant lock for class instantiation in Singleton

* Add Display singleton porting guide
This commit is contained in:
Matt Martz 2018-11-20 17:06:51 -06:00 • committed by GitHub
commit 9773a1f289
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149 changed files with 407 additions and 766 deletions
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9
lib/ansible/cli/playbook.py
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@ -15,8 +15,6 @@
# You should have received a copy of the GNU General Public License
# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
########################################################
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
@ -28,12 +26,9 @@ from ansible.errors import AnsibleError, AnsibleOptionsError
from ansible.executor.playbook_executor import PlaybookExecutor
from ansible.playbook.block import Block
from ansible.playbook.play_context import PlayContext
from ansible.utils.display import Display
try:
from __main__ import display
except ImportError:
from ansible.utils.display import Display
display = Display()
display = Display()
class PlaybookCLI(CLI):