DOC: Update colormap deprecation warning to use Python's copy function.

greglucas · greglucas · commit f3f915c48e9a · 2020-06-15T16:26:07.000-06:00
diff --git a/lib/matplotlib/colors.py b/lib/matplotlib/colors.py
@@ -500,7 +500,7 @@ def _warn_if_global_cmap_modified(cmap):
                     "colormap. In future versions, you will not be able to "
                     "modify a registered colormap in-place. To remove this "
                     "warning, you can make a copy of the colormap first. "
-                    f"cmap = mpl.cm.get_cmap({cmap.name}).copy()"
+                    f'cmap = copy.copy(mpl.cm.get_cmap("{cmap.name}"))'
         )
 
 

Original file line number	Diff line number	Diff line change
`@@ -500,7 +500,7 @@ def _warn_if_global_cmap_modified(cmap):`
`500`	`500`	`"colormap. In future versions, you will not be able to "`
`501`	`501`	`"modify a registered colormap in-place. To remove this "`
`502`	`502`	`"warning, you can make a copy of the colormap first. "`
`503`		`- f"cmap = mpl.cm.get_cmap({cmap.name}).copy()"`
	`503`	`+ f'cmap = copy.copy(mpl.cm.get_cmap("{cmap.name}"))'`
`504`	`504`	`)`
`505`	`505`
`506`	`506`