Fix help of a UnitRegistry

Fix #168

2 files changed, 5 insertions, 0 deletions

diff --git a/CHANGES b/CHANGES
index a743f3a..dda2d2c 100644
--- a/CHANGES
+++ b/CHANGES
@@ -19,6 +19,8 @@ Pint Changelog
   (Issue #176 and 179, thanks rsking84)
 - Added Chemistry context.
   (Issue #179, thanks rsking84)
+- Fix help(UnitRegisty)
+  (Issue #168)
 - Optimized "get_dimensionality" and "get_base_name".
   (Issue #166 and #167, thanks jbmohler)
 - Renamed ureg.parse_units parameter "to_delta" to "as_delta" to make clear.
diff --git a/pint/unit.py b/pint/unit.py
index 51ecef6..f0f0518 100644
--- a/pint/unit.py
+++ b/pint/unit.py
@@ -529,6 +529,9 @@ class UnitRegistry(object):
 
         self._build_cache()
 
+    def __name__(self):
+        return 'UnitRegistry'
+
     def __getattr__(self, item):
         return self.Quantity(1, item)