issues: 272643261
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| id | node_id | number | title | user | state | locked | assignee | milestone | comments | created_at | updated_at | closed_at | author_association | active_lock_reason | draft | pull_request | body | reactions | performed_via_github_app | state_reason | repo | type |
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| 272643261 | MDU6SXNzdWUyNzI2NDMyNjE= | 1706 | Exception when using "python -OO .." | 900941 | closed | 0 | 1 | 2017-11-09T17:08:39Z | 2017-11-12T04:51:14Z | 2017-11-12T04:51:14Z | CONTRIBUTOR | Hi: I've noticed that importing xarray fails when running a script using -OO option, as shown below. ``` $ python -OO test.py Traceback (most recent call last): File "test.py", line 2, in <module> import xarray File "/Users/huziy/anaconda/envs/py3.6/lib/python3.6/site-packages/xarray/init.py", line 10, in <module> from .core.extensions import (register_dataarray_accessor, File "/Users/huziy/anaconda/envs/py3.6/lib/python3.6/site-packages/xarray/core/extensions.py", line 7, in <module> from .dataarray import DataArray File "/Users/huziy/anaconda/envs/py3.6/lib/python3.6/site-packages/xarray/core/dataarray.py", line 10, in <module> from ..plot.plot import _PlotMethods File "/Users/huziy/anaconda/envs/py3.6/lib/python3.6/site-packages/xarray/plot/init.py", line 4, in <module> from .plot import (plot, line, contourf, contour, File "/Users/huziy/anaconda/envs/py3.6/lib/python3.6/site-packages/xarray/plot/plot.py", line 555, in <module> @_plot2d File "/Users/huziy/anaconda/envs/py3.6/lib/python3.6/site-packages/xarray/plot/plot.py", line 404, in _plot2d plotfunc.doc = '\n'.join((plotfunc.doc, commondoc)) TypeError: sequence item 0: expected str instance, NoneType found (py3.6) huziy at iMac-Sasha in ~/PythonProjects/xarray_playground $ cat test.py import xarray ```
# Paste the output here xr.show_versions() here
In [2]: xr.__version__
Out[2]: '0.9.6'
In [8]: sys.version
Out[8]: '3.6.1 |Anaconda 4.4.0 (x86_64)| (default, May 11 2017, 13:04:09) \n[GCC 4.2.1 Compatible Apple LLVM 6.0 (clang-600.0.57)]'
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completed | 13221727 | issue |