html_url,issue_url,id,node_id,user,created_at,updated_at,author_association,body,reactions,performed_via_github_app,issue
https://github.com/pydata/xarray/pull/4003#issuecomment-619316555,https://api.github.com/repos/pydata/xarray/issues/4003,619316555,MDEyOklzc3VlQ29tbWVudDYxOTMxNjU1NQ==,24736507,2020-04-25T04:08:54Z,2020-05-22T16:45:34Z,NONE,"Hello @Mikejmnez! Thanks for updating this PR. We checked the lines you've touched for [PEP 8](https://www.python.org/dev/peps/pep-0008) issues, and found:

* In the file [`xarray/backends/api.py`](https://github.com/pydata/xarray/blob/62893abeb9ae29221ab9a635bd18de903a930e33/xarray/backends/api.py):

> [Line 514:13](https://github.com/pydata/xarray/blob/62893abeb9ae29221ab9a635bd18de903a930e33/xarray/backends/api.py#L514): [F841](https://duckduckgo.com/?q=pep8%20F841) local variable 'overwrite_encoded_chunks' is assigned to but never used

* In the file [`xarray/backends/zarr.py`](https://github.com/pydata/xarray/blob/62893abeb9ae29221ab9a635bd18de903a930e33/xarray/backends/zarr.py):

> [Line 362:5](https://github.com/pydata/xarray/blob/62893abeb9ae29221ab9a635bd18de903a930e33/xarray/backends/zarr.py#L362): [E303](https://duckduckgo.com/?q=pep8%20E303) too many blank lines (2)
> [Line 392:22](https://github.com/pydata/xarray/blob/62893abeb9ae29221ab9a635bd18de903a930e33/xarray/backends/zarr.py#L392): [F821](https://duckduckgo.com/?q=pep8%20F821) undefined name 'get_chunk'
> [Line 396:22](https://github.com/pydata/xarray/blob/62893abeb9ae29221ab9a635bd18de903a930e33/xarray/backends/zarr.py#L396): [F821](https://duckduckgo.com/?q=pep8%20F821) undefined name 'tokenize'
> [Line 399:16](https://github.com/pydata/xarray/blob/62893abeb9ae29221ab9a635bd18de903a930e33/xarray/backends/zarr.py#L399): [F821](https://duckduckgo.com/?q=pep8%20F821) undefined name 'overwrite_encoded_chunks'

* In the file [`xarray/tests/test_backends.py`](https://github.com/pydata/xarray/blob/62893abeb9ae29221ab9a635bd18de903a930e33/xarray/tests/test_backends.py):

> [Line 1513:75](https://github.com/pydata/xarray/blob/62893abeb9ae29221ab9a635bd18de903a930e33/xarray/tests/test_backends.py#L1513): [E225](https://duckduckgo.com/?q=pep8%20E225) missing whitespace around operator





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