Fix ImportError: No module named 'StringIO' on Python 3

cgohlke · cgohlke · commit 4c3bf8e33a1e · 2016-01-02T22:49:20.000-08:00
diff --git a/examples/misc/svg_filter_pie.py b/examples/misc/svg_filter_pie.py
@@ -42,8 +42,8 @@
 
 
 # save
-from StringIO import StringIO
-f = StringIO()
+from io import BytesIO
+f = BytesIO()
 plt.savefig(f, format="svg")
 
 import xml.etree.cElementTree as ET
