TheNeuralBit commented on a change in pull request #13341:
URL: https://github.com/apache/beam/pull/13341#discussion_r524484614



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File path: sdks/python/apache_beam/dataframe/frames.py
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@@ -1917,9 +1918,12 @@ def func(df, *args, **kwargs):
       '__i%s__' % base,
       frame_base._elementwise_method('__i%s__' % base, inplace=True))
 
-for name in ['__lt__', '__le__', '__gt__', '__ge__', '__eq__', '__ne__']:
-  setattr(DeferredSeries, name, frame_base._elementwise_method(name))
-  setattr(DeferredDataFrame, name, frame_base._elementwise_method(name))
+for name in ['lt', 'le', 'gt', 'ge', 'eq', 'ne']:
+  for p in '%s', '__%s__':
+    # Note that non-underscore name is used for both as the __xxx__ methods are
+    # order-sensitive.

Review comment:
       That's odd. So I guess `series > other` will be one place where we 
diverge from the Pandas API (in an easily documented way).
   
   Is there a similar issue for arithmetic operations?




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