Fixed bug when evaluating numbers several times

tests/parsers/test_BnfParser.py

@@ -2,13 +2,13 @@ import pytest
 from core.builtin_concepts import BuiltinConcepts
 from core.concept import Concept, DEFINITION_TYPE_BNF
 from core.sheerka.services.SheerkaExecute import ParserInput
-from core.tokenizer import Tokenizer, TokenKind, LexerError, Token
+from core.tokenizer import Tokenizer, TokenKind, LexerError
 from parsers.BaseNodeParser import cnode
 from parsers.BaseParser import UnexpectedTokenErrorNode
+from parsers.BnfDefinitionParser import BnfDefinitionParser, UnexpectedEndOfFileError
+from parsers.BnfNodeParser import BnfNodeParser
 from parsers.BnfNodeParser import StrMatch, Optional, ZeroOrMore, OrderedChoice, Sequence, \
     OneOrMore, ConceptExpression
-from parsers.BnfNodeParser import BnfNodeParser
-from parsers.BnfDefinitionParser import BnfDefinitionParser, UnexpectedEndOfFileError
 
 from tests.TestUsingMemoryBasedSheerka import TestUsingMemoryBasedSheerka
 
@@ -236,4 +236,3 @@ class TestBnfParser(TestUsingMemoryBasedSheerka):
         assert res.status
         pexpression = res.value.value
         assert pexpression == Sequence(StrMatch('twenty'), ConceptExpression(number, "n1"))
-        assert pexpression.elements[1].recurse_id == "1004#1003(n1)"