DEPR: removed long deprecated input param 'axis' in .replace() (pandas-dev#20789)

Author: math-and-data

doc/source/whatsnew/v0.23.0.txt

@@ -1037,6 +1037,7 @@ Removal of prior version deprecations/changes
  ``ambiguous='infer'``, and ``infer_dst=False`` to ``ambiguous='raise'`` (:issue:`7963`).
 - When ``.resample()`` was changed from an eager to a lazy operation, like ``.groupby()`` in v0.18.0, we put in place compatibility (with a ``FutureWarning``),
  so operations would continue to work. This is now fully removed, so a ``Resampler`` will no longer forward compat operations (:issue:`20554`)
+- Remove long deprecated ``axis=None`` parameter from ``.replace()`` (:issue:`20271`)
 
 .. _whatsnew_0230.performance:
 

pandas/core/frame.py

@@ -3790,11 +3790,11 @@ def fillna(self, value=None, method=None, axis=None, inplace=False,
 
  @Appender(_shared_docs['replace'] % _shared_doc_kwargs)
  def replace(self, to_replace=None, value=None, inplace=False, limit=None,
- regex=False, method='pad', axis=None):
+ regex=False, method='pad'):
  return super(DataFrame, self).replace(to_replace=to_replace,
  value=value, inplace=inplace,
  limit=limit, regex=regex,
- method=method, axis=axis)
+ method=method)
 
  @Appender(_shared_docs['shift'] % _shared_doc_kwargs)
  def shift(self, periods=1, freq=None, axis=0):

pandas/core/generic.py

@@ -5543,9 +5543,6 @@ def bfill(self, axis=None, inplace=False, limit=None, downcast=None):
 
  .. versionchanged:: 0.23.0
  Added to DataFrame.
- axis : None
- .. deprecated:: 0.13.0
- Has no effect and will be removed.
 
  See Also
  --------
@@ -5753,15 +5750,11 @@ def bfill(self, axis=None, inplace=False, limit=None, downcast=None):
 
  @Appender(_shared_docs['replace'] % _shared_doc_kwargs)
  def replace(self, to_replace=None, value=None, inplace=False, limit=None,
- regex=False, method='pad', axis=None):
+ regex=False, method='pad'):
  inplace = validate_bool_kwarg(inplace, 'inplace')
  if not is_bool(regex) and to_replace is not None:
  raise AssertionError("'to_replace' must be 'None' if 'regex' is "
  "not a bool")
- if axis is not None:
- warnings.warn('the "axis" argument is deprecated '
- 'and will be removed in'
- 'v0.13; this argument has no effect')
 
  self._consolidate_inplace()
 

pandas/core/series.py

@@ -3423,11 +3423,10 @@ def fillna(self, value=None, method=None, axis=None, inplace=False,
 
  @Appender(generic._shared_docs['replace'] % _shared_doc_kwargs)
  def replace(self, to_replace=None, value=None, inplace=False, limit=None,
- regex=False, method='pad', axis=None):
+ regex=False, method='pad'):
  return super(Series, self).replace(to_replace=to_replace, value=value,
  inplace=inplace, limit=limit,
- regex=regex, method=method,
- axis=axis)
+ regex=regex, method=method)
 
  @Appender(generic._shared_docs['shift'] % _shared_doc_kwargs)
  def shift(self, periods=1, freq=None, axis=0):