compatibility fix with dateutil before 2.8

1 files changed, 3 insertions, 1 deletions

diff --git a/lesana/types.py b/lesana/types.py
index 1d5322e..0b278d6 100644
--- a/lesana/types.py
+++ b/lesana/types.py
@@ -226,9 +226,11 @@ class LesanaDate(LesanaType):
             return data
         if isinstance(data, datetime.date):
             return data
+        # compatibility with dateutil before 2.8
+        ParserError = getattr(dateutil.parser, 'ParserError', ValueError)
         try:
             return dateutil.parser.parse(data)
-        except dateutil.parser.ParserError:
+        except ParserError:
             raise LesanaValueError(
                 "Invalid value for date field: {}".format(data)
             )