Set Default IronPython Variable for Very Old Versions
Set Default IronPython Variable for Very Old Versions

The old version of IronPython that ships with Rhino 5 has some bugs in the platform module.  In this case, the inron_python variable does not get set at all.  To avoid this case, I set a default variable of iron_python to True before checking the platform module.

boris-p/ladybug,boris-p/ladybug