I can define and eval BNF definitions

parsers/PythonParser.py

@@ -2,7 +2,6 @@ from core.builtin_concepts import BuiltinConcepts
 from parsers.BaseParser import BaseParser, Node, ErrorNode
 from dataclasses import dataclass
 import ast
-import copy
 import logging
 
 log = logging.getLogger(__name__)
@@ -57,10 +56,10 @@ class PythonParser(BaseParser):
     Parse Python scripts
     """
 
-    def __init__(self, source="<undef>"):
+    def __init__(self, **kwargs):
 
         BaseParser.__init__(self, "PythonParser")
-        self.source = source
+        self.source = kwargs.get("source", "<undef>")
 
     def parse(self, context, text):
         text = text if isinstance(text, str) else self.get_text_from_tokens(text)