Error: cannot import name 'EvaluableParseManager'

[shahid1579]

from booleano.parser import Grammar, EvaluableParseManager, SymbolTable, Bind
ImportError: cannot import name 'EvaluableParseManager'
Please tell me how can i fix this issue.
Thanks

[GlenWalker]

Probably a bit late to help, but in case anyone else needs to know, the sample code https://github.com/Yupeek/booleano/blob/master/sample/boolean_parser1.py imports like so: from booleano.parser.core import EvaluableParseManager