BUG: Fix formatting error in GridSpec.__repr__

lpsinger · lpsinger · commit fffe9f3e9c29 · 2020-04-13T23:38:08.000-04:00
Fix this error in `GridSpec.__repr__` when formatting the
`width_ratios` or `height_ratios` arguments:

    TypeError: not all arguments converted during string formatting
diff --git a/lib/matplotlib/gridspec.py b/lib/matplotlib/gridspec.py
@@ -48,9 +48,9 @@ def __init__(self, nrows, ncols, height_ratios=None, width_ratios=None):
         self.set_width_ratios(width_ratios)
 
     def __repr__(self):
-        height_arg = (', height_ratios=%r' % self._row_height_ratios
+        height_arg = (', height_ratios=%r' % (self._row_height_ratios,)
                       if self._row_height_ratios is not None else '')
-        width_arg = (', width_ratios=%r' % self._col_width_ratios
+        width_arg = (', width_ratios=%r' % (self._col_width_ratios,)
                      if self._col_width_ratios is not None else '')
         return '{clsname}({nrows}, {ncols}{optionals})'.format(
             clsname=self.__class__.__name__,
