https://docs.python.org/3.7/reference/lexical_analysis.html?highlight=reserved%20word#keywords
I didn't see any other issues mentioning this Python 3.7 change. Something to be aware of, async will be reserved in Python 3.7.
[I] (xolox.python-executor-cz6TGcXB) xolox.python-executor-cz6TGcXB ⚓ ~/g/xolox.python-executor master ⚑ tox -e py37
GLOB sdist-make: /home/ntangsurat/git/xolox.python-executor/setup.py
py37 create: /home/ntangsurat/git/xolox.python-executor/.tox/py37
py37 installdeps: -rrequirements-tests.txt
py37 inst: /home/ntangsurat/git/xolox.python-executor/.tox/dist/executor-19.0.zip
py37 installed: -f ~/.pypi/,coloredlogs==9.0,coverage==4.5.1,executor==19.0,fasteners==0.14.1,humanfriendly==4.8,mock==2.0.0,monotonic==1.4,pbr==3.1.1,property-manager==2.2,py==1.5.2,pytest==3.2.5,pytest-cov==2.5.1,six==1.11.0,verboselogs==1.7,virtualenv==15.1.0
py37 runtests: PYTHONHASHSEED='3646219831'
py37 runtests: commands[0] | py.test
================================================================================ test session starts ================================================================================
platform linux -- Python 3.7.0b2, pytest-3.2.5, py-1.5.2, pluggy-0.4.0 -- /home/ntangsurat/git/xolox.python-executor/.tox/py37/bin/python3.7
cachedir: .cache
rootdir: /home/ntangsurat/git/xolox.python-executor, inifile: tox.ini
plugins: cov-2.5.1
collected 0 items / 1 errors
====================================================================================== ERRORS =======================================================================================
________________________________________________________________________ ERROR collecting executor/tests.py _________________________________________________________________________
.tox/py37/lib/python3.7/site-packages/_pytest/python.py:395: in _importtestmodule
mod = self.fspath.pyimport(ensuresyspath=importmode)
.tox/py37/lib/python3.7/site-packages/py/_path/local.py:668: in pyimport
__import__(modname)
E File "/home/ntangsurat/git/xolox.python-executor/executor/__init__.py", line 199
E if command.async:
E ^
E SyntaxError: invalid syntax
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Interrupted: 1 errors during collection !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
============================================================================== 1 error in 0.16 seconds ==============================================================================
ERROR: InvocationError: '/home/ntangsurat/git/xolox.python-executor/.tox/py37/bin/py.test'
______________________________________________________________________________________ summary ______________________________________________________________________________________
ERROR: py37: commands failed
https://docs.python.org/3.7/reference/lexical_analysis.html?highlight=reserved%20word#keywords
I didn't see any other issues mentioning this Python 3.7 change. Something to be aware of,
asyncwill be reserved in Python 3.7.