Fixed #8980: distutils.command.check was failing w/ docutils installed
diff --git a/Lib/distutils/command/check.py b/Lib/distutils/command/check.py
index 12844cb..2657c69 100644
--- a/Lib/distutils/command/check.py
+++ b/Lib/distutils/command/check.py
@@ -13,7 +13,7 @@
     from docutils.parsers.rst import Parser
     from docutils import frontend
     from docutils import nodes
-    from StringIO import StringIO
+    from io import StringIO
 
     class SilentReporter(Reporter):