pcoet commented on a change in pull request #14876:
URL: https://github.com/apache/beam/pull/14876#discussion_r645205789
##########
File path: sdks/python/apache_beam/dataframe/frames.py
##########
@@ -1541,9 +1568,20 @@ def __setitem__(self, key, value):
else:
raise NotImplementedError(key)
+ @frame_base.with_docs_from(pd.DataFrame)
@frame_base.args_to_kwargs(pd.DataFrame)
@frame_base.populate_defaults(pd.DataFrame)
def align(self, other, join, axis, copy, level, method, **kwargs):
+ """Aligning per-level is not yet supported. Only the default,
Review comment:
"per-level" -> "per level" (because it's technically being used as an
adverb, and ... English is weird)
##########
File path: sdks/python/apache_beam/dataframe/frames.py
##########
@@ -1541,9 +1568,20 @@ def __setitem__(self, key, value):
else:
raise NotImplementedError(key)
+ @frame_base.with_docs_from(pd.DataFrame)
@frame_base.args_to_kwargs(pd.DataFrame)
@frame_base.populate_defaults(pd.DataFrame)
def align(self, other, join, axis, copy, level, method, **kwargs):
+ """Aligning per-level is not yet supported. Only the default,
+ ``level=None``, is allowed.
+
+ Filling NaN values via ``method`` is not supported, because it is
+ `order-sensitive
+ <https://s.apache.org/dataframe-order-sensitive-operatons>`_. Only the
+ default, ``method=None``, is allowed.
+
+ ``copy=False`` is not supported because its behavior (whether or not it is
+ an inplace oepration) depends on the data."""
Review comment:
typo: "oepration"
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