Hi devs, In Python3, "int" type number has variable precision, but IntProperty provides a fixed precision integer. So, if a Python script saves a very large number in the intger property, the value may overflow and cause unexpected results. Indeed, an error caused by such overflow was reported in the tracker:
https://projects.blender.org/tracker/index.php?func=detail&aid=36857&group_id=9&atid=498 Why doesn't integer property use variable precision? Intentional? One more thing, The description of IntProperty says "... min=-sys.maxint, max=sys.maxint, ...". Here, sys.maxint not existing in Python3 can be substituted with sys.maxsize. However, IntProperty actually uses INT_MIN and INT_MAX for the default range, and sys.maxsize is not same as INT_MAX. On Ubuntu (64bit or 32bit), sys.maxsize = 9223372036854775807 or 2147483647 INT_MAX = 2147483647 LONG_MAX = 9223372036854775807L or 2147483647L LLONG_MAX = 9223372036854775807LL We should correct the description or change the default range. Thanks -- IRIE Shinsuke _______________________________________________ Bf-committers mailing list Bf-committers@blender.org http://lists.blender.org/mailman/listinfo/bf-committers