r39132 commented on issue #3723: [AIRFLOW-2876] Update Tenacity to 4.12 URL: https://github.com/apache/incubator-airflow/pull/3723#issuecomment-411582062 @Fokko I ran setup.py install on a branch based on this PR and I am getting exceptions when starting the scheduler: ``` sianand@LM-SJN-21002367:~/Projects/airflow_incubator $ pip freeze | grep tenacity tenacity==4.12.0 [2018-08-08 16:06:35,130] {models.py:368} ERROR - Failed to import: /usr/local/lib/python3.6/site-packages/apache_airflow-2.0.0.dev0+incubating-py3.6.egg/airflow/example_dags/example_http_operator.py Traceback (most recent call last): File "/usr/local/lib/python3.6/site-packages/apache_airflow-2.0.0.dev0+incubating-py3.6.egg/airflow/models.py", line 365, in process_file m = imp.load_source(mod_name, filepath) File "/usr/local/Cellar/python/3.6.5/Frameworks/Python.framework/Versions/3.6/lib/python3.6/imp.py", line 172, in load_source module = _load(spec) File "<frozen importlib._bootstrap>", line 684, in _load File "<frozen importlib._bootstrap>", line 665, in _load_unlocked File "<frozen importlib._bootstrap_external>", line 678, in exec_module File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed File "/usr/local/lib/python3.6/site-packages/apache_airflow-2.0.0.dev0+incubating-py3.6.egg/airflow/example_dags/example_http_operator.py", line 27, in <module> from airflow.operators.http_operator import SimpleHttpOperator File "/usr/local/lib/python3.6/site-packages/apache_airflow-2.0.0.dev0+incubating-py3.6.egg/airflow/operators/http_operator.py", line 21, in <module> from airflow.hooks.http_hook import HttpHook File "/usr/local/lib/python3.6/site-packages/apache_airflow-2.0.0.dev0+incubating-py3.6.egg/airflow/hooks/http_hook.py", line 23, in <module> import tenacity File "/usr/local/lib/python3.6/site-packages/tenacity-4.12.0-py3.6.egg/tenacity/__init__.py", line 21, in <module> import asyncio File "/usr/local/Cellar/python/3.6.5/Frameworks/Python.framework/Versions/3.6/lib/python3.6/asyncio/__init__.py", line 21, in <module> from .base_events import * File "/usr/local/Cellar/python/3.6.5/Frameworks/Python.framework/Versions/3.6/lib/python3.6/asyncio/base_events.py", line 17, in <module> import concurrent.futures File "/usr/local/lib/python3.6/site-packages/concurrent/futures/__init__.py", line 8, in <module> from concurrent.futures._base import (FIRST_COMPLETED, File "/usr/local/lib/python3.6/site-packages/concurrent/futures/_base.py", line 381 raise exception_type, self._exception, self._traceback ^ SyntaxError: invalid syntax ```
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