emkornfield commented on a change in pull request #4021:
URL: https://github.com/apache/iceberg/pull/4021#discussion_r801131287



##########
File path: python/src/iceberg/io/base.py
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@@ -26,6 +26,50 @@
 from abc import ABC, abstractmethod
 from typing import Union
 
+from typing_extensions import Protocol, runtime_checkable

Review comment:
       i.e. try to import from the native 3.8+ version and fallback to 
extension?  I think this could make the typing_extensions optional for 3.8 (not 
sure if we consider this a big deal).




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