commit e3a523a0fa16aec880880928303bfcbd1fb74bc2
author Denis Osipov <osipov_d@list.ru> Thu Apr 19 04:50:25 2018 +0500
committer Łukasz Langa <lukasz@langa.pl> Wed Apr 18 16:50:25 2018 -0700
tree 8325a7ac2e646ab9f21f530c3098c020db87e761
parent e5362eaa75a154c6e91c5b1c47719d0a0f5ca48b

bpo-31583: Fix 2to3 for using with --add-suffix option (GH-3758)

Lib/lib2to3/main.py

diff --git a/Lib/lib2to3/main.py b/Lib/lib2to3/main.py
index 1a1df01..d6b7088 100644
--- a/Lib/lib2to3/main.py
+++ b/Lib/lib2to3/main.py
@@ -80,7 +80,7 @@
             filename += self._append_suffix
         if orig_filename != filename:
             output_dir = os.path.dirname(filename)
-            if not os.path.isdir(output_dir):
+            if not os.path.isdir(output_dir) and output_dir:
                 os.makedirs(output_dir)
             self.log_message('Writing converted %s to %s.', orig_filename,
                              filename)