FIX: doc string

jklymak · jklymak · commit cf25a70083f3 · 2020-10-09T16:03:34.000-07:00
diff --git a/lib/matplotlib/figure.py b/lib/matplotlib/figure.py
@@ -458,26 +458,29 @@ def suptitle(self, t, **kwargs):
                 'ha': 'center', 'va': 'top', 'rotation': 0}
         return self._suplabels(t, info, **kwargs)
 
-    suptitle.__doc__ = _suplabels.__doc__.format(
-        x0=0.5, y0=0.98, name='suptitle', ha='center', va='top')
+    if suptitle.__doc__:
+        suptitle.__doc__ = _suplabels.__doc__.format(
+            x0=0.5, y0=0.98, name='suptitle', ha='center', va='top')
 
     def supxlabel(self, t, **kwargs):
         # docstring from _suplabels...
         info = {'name': '_supxlabel', 'x0': 0.5, 'y0': 0.01,
                 'ha': 'center', 'va': 'bottom', 'rotation': 0}
         return self._suplabels(t, info, **kwargs)
 
-    supxlabel.__doc__ = _suplabels.__doc__.format(
-        x0=0.5, y0=0.01, name='supxlabel', ha='center', va='bottom')
+    if supxlabel.__doc__:
+        supxlabel.__doc__ = _suplabels.__doc__.format(
+            x0=0.5, y0=0.01, name='supxlabel', ha='center', va='bottom')
 
     def supylabel(self, t, **kwargs):
         # docstring from _suplabels...
         info = {'name': '_supylabel', 'x0': 0.02, 'y0': 0.5,
                 'ha': 'left', 'va': 'center', 'rotation': 90}
         return self._suplabels(t, info, **kwargs)
 
-    supylabel.__doc__ = _suplabels.__doc__.format(
-        x0=0.02, y0=0.5, name='supylabel', ha='left', va='center')
+    if supylabel.__doc__:
+        supylabel.__doc__ = _suplabels.__doc__.format(
+            x0=0.02, y0=0.5, name='supylabel', ha='left', va='center')
 
     def get_edgecolor(self):
         """Get the edge color of the Figure rectangle."""
