From 6442ec8c37f93ba29f0df743b6da29913857707e Mon Sep 17 00:00:00 2001
From: Tomas Babej <tomasbabej@gmail.com>
Date: Thu, 19 Mar 2015 00:03:34 +0100
Subject: [PATCH 1/1] SerializingObject: Restrict usage of 'task calc'
 conversion for those TW versions that contain it

---
 tasklib/task.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tasklib/task.py b/tasklib/task.py
index e0e1040..b9103d1 100644
--- a/tasklib/task.py
+++ b/tasklib/task.py
@@ -262,8 +262,10 @@ class SerializingObject(object):
                 # If the value is already localized, there is no need to change
                 # time zone at this point. Also None is a valid value too.
                 localized = value
-        elif isinstance(value, six.string_types):
+        elif (isinstance(value, six.string_types)
+                and self.warrior.version > VERSION_2_4_0):
             # For strings, use 'task calc' to evaluate the string to datetime
+            # available since TW 2.4.0
             args = value.split()
             result = self.warrior.execute_command(['calc'] + args)
             naive = datetime.datetime.strptime(result[0], DATE_FORMAT_CALC)
-- 
2.39.2