Merge pull request #18963 from hollycorbett/polybase_deprecated_removal

DEP: remove PolyBase from np.polynomial.polyutils

doc/release/upcoming_changes/18963.expired.rst

@@ -0,0 +1,8 @@
+Remove deprecated ``PolyBase`` and unused ``PolyError`` and ``PolyDomainError``
+-------------------------------------------------------------------------------
+
+The class ``PolyBase`` has been removed (deprecated in numpy 1.9.0). Please use
+the abstract ``ABCPolyBase`` class instead.
+
+Furthermore, the unused ``PolyError`` and ``PolyDomainError`` exceptions are
+removed from the `numpy.polynomial`.

numpy/polynomial/polyutils.py

@@ -4,15 +4,6 @@
 This module provides: error and warning objects; a polynomial base class;
 and some routines used in both the `polynomial` and `chebyshev` modules.
 
-Error objects
--------------
-
-.. autosummary::
-   :toctree: generated/
-
-   PolyError            base class for this sub-package's errors.
-   PolyDomainError      raised when domains are mismatched.
-
 Warning objects
 ---------------
 
@@ -21,14 +12,6 @@
 
    RankWarning  raised in least-squares fit for rank-deficient matrix.
 
-Base class
-----------
-
-.. autosummary::
-   :toctree: generated/
-
-   PolyBase Obsolete base class for the polynomial classes. Do not use.
-
 Functions
 ---------
 
@@ -50,8 +33,8 @@
 import numpy as np
 
 __all__ = [
-    'RankWarning', 'PolyError', 'PolyDomainError', 'as_series', 'trimseq',
-    'trimcoef', 'getdomain', 'mapdomain', 'mapparms', 'PolyBase']
+    'RankWarning', 'as_series', 'trimseq',
+    'trimcoef', 'getdomain', 'mapdomain', 'mapparms']
 
 #
 # Warnings and Exceptions
@@ -61,35 +44,6 @@ class RankWarning(UserWarning):
     """Issued by chebfit when the design matrix is rank deficient."""
     pass
 
-class PolyError(Exception):
-    """Base class for errors in this module."""
-    pass
-
-class PolyDomainError(PolyError):
-    """Issued by the generic Poly class when two domains don't match.
-
-    This is raised when an binary operation is passed Poly objects with
-    different domains.
-
-    """
-    pass
-
-#
-# Base class for all polynomial types
-#
-
-class PolyBase:
-    """
-    Base class for all polynomial types.
-
-    Deprecated in numpy 1.9.0, use the abstract
-    ABCPolyBase class instead. Note that the latter
-    requires a number of virtual functions to be
-    implemented.
-
-    """
-    pass
-
 #
 # Helper functions to convert inputs to 1-D arrays
 #

numpy/polynomial/polyutils.pyi

@@ -3,11 +3,6 @@ from typing import List
 __all__: List[str]
 
 class RankWarning(UserWarning): ...
-class PolyError(Exception): ...
-class PolyDomainError(PolyError): ...
-
-# NOTE: Deprecated
-# class PolyBase: ...
 
 def trimseq(seq): ...
 def as_series(alist, trim=...): ...