Error with adding interpreter of Python 3.x

[(BBk)Blade]

In DreamPie in path <DreamPie_dir>\share\dreampie there are file subp_main.py. In it there are an instruction
 sys.setdefaultencoding('utf-8')
But in Python3 setdefaulencoding() was removed, that's why interpreter of Python3 couldn't be add.
The decision:
instead of
 sys.setdefaultencoding('utf-8')

we may use

try:
 sys.setdefaultencoding('utf-8')
except:
 pass

That's all.