Move Axes __repr__ from Subplot to AxesBase.

The implementation is not particularly specific to gridspec-managed
axes; it can reasonably also be used for arbitrarily-positioned axes.

Author: anntzer

lib/matplotlib/axes/_base.py

@@ -596,6 +596,23 @@ def __setstate__(self, state):
         self.__dict__ = state
         self._stale = True
 
+    def __repr__(self):
+        fields = []
+        if self.get_label():
+            fields += [f"label={self.get_label()!r}"]
+        titles = []
+        for k in ["left", "center", "right"]:
+            title = self.get_title(loc=k)
+            if title:
+                titles.append(f"{k!r}:{title!r}")
+        if titles:
+            fields += ["title={" + ",".join(titles) + "}"]
+        if self.get_xlabel():
+            fields += [f"xlabel={self.get_xlabel()!r}"]
+        if self.get_ylabel():
+            fields += [f"ylabel={self.get_ylabel()!r}"]
+        return f"<{self.__class__.__name__}:" + ", ".join(fields) + ">"
+
     def get_window_extent(self, *args, **kwargs):
         """
         Return the axes bounding box in display space; *args* and *kwargs*

lib/matplotlib/axes/_subplots.py

@@ -144,23 +144,6 @@ def _make_twin_axes(self, *args, **kwargs):
         self._twinned_axes.join(self, twin)
         return twin
 
-    def __repr__(self):
-        fields = []
-        if self.get_label():
-            fields += [f"label={self.get_label()!r}"]
-        titles = []
-        for k in ["left", "center", "right"]:
-            title = self.get_title(loc=k)
-            if title:
-                titles.append(f"{k!r}:{title!r}")
-        if titles:
-            fields += ["title={" + ",".join(titles) + "}"]
-        if self.get_xlabel():
-            fields += [f"xlabel={self.get_xlabel()!r}"]
-        if self.get_ylabel():
-            fields += [f"ylabel={self.get_ylabel()!r}"]
-        return f"<{self.__class__.__name__}:" + ", ".join(fields) + ">"
-
 
 # this here to support cartopy which was using a private part of the
 # API to register their Axes subclasses.