Merge branch 'inde_api_deprecated_is_categorical' of https://github.com/ShisuiUzumaki/pandas into inde_api_deprecated_is_categorical

Author: ShisuiUzumaki

doc/source/whatsnew/v2.0.0.rst

@@ -411,38 +411,6 @@ Optional libraries below the lowest tested version may still work, but are not c
 
 See :ref:`install.dependencies` and :ref:`install.optional_dependencies` for more.
 
-Datetimes are now parsed with a consistent format
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-In the past, :func:`to_datetime` guessed the format for each element independently. This was appropriate for some cases where elements had mixed date formats - however, it would regularly cause problems when users expected a consistent format but the function would switch formats between elements. As of version 2.0.0, parsing will use a consistent format, determined by the first non-NA value (unless the user specifies a format, in which case that is used).
-
-*Old behavior*:
-
-  .. code-block:: ipython
-
-     In [1]: ser = pd.Series(['13-01-2000', '12-01-2000'])
-     In [2]: pd.to_datetime(ser)
-     Out[2]:
-     0   2000-01-13
-     1   2000-12-01
-     dtype: datetime64[ns]
-
-*New behavior*:
-
-  .. ipython:: python
-    :okwarning:
-
-     ser = pd.Series(['13-01-2000', '12-01-2000'])
-     pd.to_datetime(ser)
-
-Note that this affects :func:`read_csv` as well.
-
-If you still need to parse dates with inconsistent formats, you'll need to apply :func:`to_datetime`
-to each element individually, e.g. ::
-
-     ser = pd.Series(['13-01-2000', '12 January 2000'])
-     ser.apply(pd.to_datetime)
-
 .. _whatsnew_200.api_breaking.other:
 
 Other API changes

pandas/core/indexes/base.py

@@ -2943,7 +2943,7 @@ def union(self, other, sort=None):
 
         Returns
         -------
-        union : Index
+        Index
 
         Examples
         --------
@@ -3284,7 +3284,7 @@ def difference(self, other, sort=None):
 
         Returns
         -------
-        difference : Index
+        Index
 
         Examples
         --------
@@ -3360,7 +3360,7 @@ def symmetric_difference(self, other, result_name=None, sort=None):
 
         Returns
         -------
-        symmetric_difference : Index
+        Index
 
         Notes
         -----
@@ -3448,7 +3448,7 @@ def get_loc(self, key):
 
         Returns
         -------
-        loc : int if unique index, slice if monotonic index, else mask
+        int if unique index, slice if monotonic index, else mask
 
         Examples
         --------
@@ -3509,7 +3509,7 @@ def get_loc(self, key):
 
         Returns
         -------
-        indexer : np.ndarray[np.intp]
+        np.ndarray[np.intp]
             Integers from 0 to n - 1 indicating that the index at these
             positions matches the corresponding target values. Missing values
             in the target are marked by -1.
@@ -6132,7 +6132,7 @@ def slice_indexer(
 
         Returns
         -------
-        indexer : slice
+        slice
 
         Raises
         ------
@@ -6309,7 +6309,7 @@ def slice_locs(self, start=None, end=None, step=None) -> tuple[int, int]:
 
         Returns
         -------
-        start, end : int
+        tuple[int, int]
 
         See Also
         --------