Make most arguments to OffsetBox classes keyword only

Author: oscargus

lib/matplotlib/offsetbox.py

@@ -533,8 +533,7 @@ class PaddedBox(OffsetBox):
     it when rendering.
     """
 
-    @_api.make_keyword_only("3.6", name="draw_frame")
-    def __init__(self, child, pad=0., draw_frame=False, patch_attrs=None):
+    def __init__(self, child, pad=0., *, draw_frame=False, patch_attrs=None):
         """
         Parameters
         ----------
@@ -715,8 +714,8 @@ class TextArea(OffsetBox):
     child text.
     """
 
-    @_api.make_keyword_only("3.6", name="textprops")
     def __init__(self, s,
+                 *,
                  textprops=None,
                  multilinebaseline=False,
                  ):
@@ -929,8 +928,7 @@ class AnchoredOffsetbox(OffsetBox):
              'center': 10,
              }
 
-    @_api.make_keyword_only("3.6", name="pad")
-    def __init__(self, loc,
+    def __init__(self, loc, *,
                  pad=0.4, borderpad=0.5,
                  child=None, prop=None, frameon=True,
                  bbox_to_anchor=None,
@@ -1103,8 +1101,7 @@ class AnchoredText(AnchoredOffsetbox):
     AnchoredOffsetbox with Text.
     """
 
-    @_api.make_keyword_only("3.6", name="pad")
-    def __init__(self, s, loc, pad=0.4, borderpad=0.5, prop=None, **kwargs):
+    def __init__(self, s, loc, *, pad=0.4, borderpad=0.5, prop=None, **kwargs):
         """
         Parameters
         ----------
@@ -1144,8 +1141,7 @@ def __init__(self, s, loc, pad=0.4, borderpad=0.5, prop=None, **kwargs):
 
 class OffsetImage(OffsetBox):
 
-    @_api.make_keyword_only("3.6", name="zoom")
-    def __init__(self, arr,
+    def __init__(self, arr, *,
                  zoom=1,
                  cmap=None,
                  norm=None,
@@ -1229,8 +1225,7 @@ def __str__(self):
         return f"AnnotationBbox({self.xy[0]:g},{self.xy[1]:g})"
 
     @_docstring.dedent_interpd
-    @_api.make_keyword_only("3.6", name="xycoords")
-    def __init__(self, offsetbox, xy,
+    def __init__(self, offsetbox, xy, *,
                  xybox=None,
                  xycoords='data',
                  boxcoords=None,