In gettz(), if name is None and everything else fails, return tzlocal().

1 files changed, 2 insertions, 0 deletions

diff --git a/dateutil/tz.py b/dateutil/tz.py
index 947d077..a1d6c97 100644
--- a/dateutil/tz.py
+++ b/dateutil/tz.py
@@ -884,6 +884,8 @@ def gettz(name=None):
                     break
                 except (IOError, OSError, ValueError):
                     pass
+        else:
+            tz = tzlocal()
     else:
         if name.startswith(":"):
             name = name[:-1]