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-rw-r--r--dateutil/relativedelta.py4
1 files changed, 3 insertions, 1 deletions
diff --git a/dateutil/relativedelta.py b/dateutil/relativedelta.py
index d0b599a..a1b8929 100644
--- a/dateutil/relativedelta.py
+++ b/dateutil/relativedelta.py
@@ -10,6 +10,8 @@ __license__ = "Simplified BSD"
import datetime
import calendar
+from six import integer_types
+
__all__ = ["relativedelta", "MO", "TU", "WE", "TH", "FR", "SA", "SU"]
class weekday(object):
@@ -171,7 +173,7 @@ Here is the behavior of operations with relativedelta:
self.second = second
self.microsecond = microsecond
- if isinstance(weekday, int):
+ if isinstance(weekday, integer_types):
self.weekday = weekdays[weekday]
else:
self.weekday = weekday