leezu commented on a change in pull request #17749: Fix races in block scope
and deferred_init
URL: https://github.com/apache/incubator-mxnet/pull/17749#discussion_r387206282
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File path: python/mxnet/gluon/block.py
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@@ -48,8 +48,9 @@ class _BlockScope(object):
def __init__(self, block):
self._block = block
self._counter = {}
- self._old_scope = None
- self._name_scope = None
+ self._local = threading.local()
Review comment:
How about using contextvars here? This will ensure the code is compatible
with python coroutines.
https://docs.python.org/3/library/contextvars.html
You need to include https://pypi.org/project/contextvars/ as dependency on
Python 3.5, 3.6
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