@@ -79,14 +79,14 @@ def limit_range_for_scale(self, vmin, vmax, minpos):
7979return vmin ,vmax
8080
8181
82- class TransformScaleBase ( Transform ):
82+ class _TransformScaleCopyable ( ):
8383"""Base transform for scales to allow a deep copy"""
8484def __deepcopy__ (self ,memo ):
8585return self .frozen ()
8686
87+ __copy__ = __deepcopy__
8788
88- class LinearTransform (TransformScaleBase ,IdentityTransform ):
89- """Mixed class for Identity"""
89+ class LinearTransform (_TransformScaleCopyable ,IdentityTransform ):
9090pass
9191
9292
@@ -124,9 +124,9 @@ def get_transform(self):
124124return LinearTransform ()
125125
126126
127- class FuncTransform (TransformScaleBase ):
127+ class FuncTransform (_TransformScaleCopyable , Transform ):
128128"""
129- Asimple transform that takes and arbitrary function for the
129+ A transform that takes and arbitrary function for the
130130 forward and inverse transform.
131131 """
132132
@@ -202,7 +202,7 @@ def set_default_locators_and_formatters(self, axis):
202202axis .set_minor_locator (NullLocator ())
203203
204204
205- class LogTransform (TransformScaleBase ):
205+ class LogTransform (_TransformScaleCopyable , Transform ):
206206input_dims = output_dims = 1
207207
208208@_api .rename_parameter ("3.3" ,"nonpos" ,"nonpositive" )
@@ -244,7 +244,7 @@ def inverted(self):
244244return InvertedLogTransform (self .base )
245245
246246
247- class InvertedLogTransform (TransformScaleBase ):
247+ class InvertedLogTransform (_TransformScaleCopyable , Transform ):
248248input_dims = output_dims = 1
249249
250250def __init__ (self ,base ):
@@ -370,7 +370,7 @@ def get_transform(self):
370370return self ._transform
371371
372372
373- class SymmetricalLogTransform (TransformScaleBase ):
373+ class SymmetricalLogTransform (_TransformScaleCopyable , Transform ):
374374input_dims = output_dims = 1
375375
376376def __init__ (self ,base ,linthresh ,linscale ):
@@ -402,7 +402,7 @@ def inverted(self):
402402self .linscale )
403403
404404
405- class InvertedSymmetricalLogTransform (TransformScaleBase ):
405+ class InvertedSymmetricalLogTransform (_TransformScaleCopyable , Transform ):
406406input_dims = output_dims = 1
407407
408408def __init__ (self ,base ,linthresh ,linscale ):
@@ -505,7 +505,7 @@ def get_transform(self):
505505return self ._transform
506506
507507
508- class LogitTransform (TransformScaleBase ):
508+ class LogitTransform (_TransformScaleCopyable , Transform ):
509509input_dims = output_dims = 1
510510
511511@_api .rename_parameter ("3.3" ,"nonpos" ,"nonpositive" )
@@ -531,7 +531,7 @@ def __str__(self):
531531return "{}({!r})" .format (type (self ).__name__ ,self ._nonpositive )
532532
533533
534- class LogisticTransform (TransformScaleBase ):
534+ class LogisticTransform (_TransformScaleCopyable , Transform ):
535535input_dims = output_dims = 1
536536
537537@_api .rename_parameter ("3.3" ,"nonpos" ,"nonpositive" )