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Remove py37 collections.abc deprecation warning from lru_cache module. #2849

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Mar 24, 2019
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Remove py37 collections.abc deprecation warning from lru_cache module. #2849

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3 changes: 2 additions & 1 deletion xarray/backends/lru_cache.py
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Original file line number Diff line number Diff line change
@@ -1,8 +1,9 @@
import collections
import collections.abc
import threading


class LRUCache(collections.MutableMapping):
class LRUCache(collections.abc.MutableMapping):
"""Thread-safe LRUCache based on an OrderedDict.

All dict operations (__getitem__, __setitem__, __contains__) update the
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