test_LogicGrammars fails in python 3.8

[louiehub]

I am using python 3.8. When I run test_LogicGrammars.py, it complains as follows:

testHTMLTable (__main__.TestHTMLGrammars) ... ERROR
testLogLine (__main__.TestLogGrammar) ... ERROR
testLogicalExp (__main__.TestLogicGrammars) ... ERROR
testLogicalExpression (__main__.TestLogicGrammars) ... skipped 'overlapping inpu
t'
testTrueFalse (__main__.TestLogicGrammars) ... ERROR

======================================================================
ERROR: testHTMLTable (__main__.TestHTMLGrammars)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "tests\functional\test_LogicGrammars.py", line 60, in testHTMLTable
    result = parser.get_trees(lexed)
  File "C:\Program Files\Python38\lib\site-packages\pydsl\parser\backtracing.py"
, line 36, in get_trees
    raise ValueError("Unknown element in %s" % str(data))
ValueError: Unknown element in [Token(content=['<', 't', 'a', 'b', 'l', 'e', '>'
], gd=['<', 't', 'a', 'b', 'l', 'e', '>']), Token(content=['<', 't', 'r', '>'],
gd=['<', 't', 'r', '>']), Token(content=['<', 't', 'd', '>'], gd=['<', 't', 'd',
 '>']), Token(content=['1'], gd=<pydsl.grammar.definition.RegularExpression obje
ct at 0x00000000034F7EB0>), Token(content=['<', '/', 't', 'd', '>'], gd=['<', '/
', 't', 'd', '>']), Token(content=['<', '/', 't', 'r', '>'], gd=['<', '/', 't',
'r', '>']), Token(content=['<', '/', 't', 'a', 'b', 'l', 'e', '>'], gd=['<', '/'
, 't', 'a', 'b', 'l', 'e', '>'])]

======================================================================
ERROR: testLogLine (__main__.TestLogGrammar)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "tests\functional\test_LogicGrammars.py", line 76, in testLogLine
    tokenized = lex(grammar.alphabet, ascii_encoding, original_string, force_lex
er="general")
TypeError: lex() got an unexpected keyword argument 'force_lexer'

======================================================================
ERROR: testLogicalExp (__main__.TestLogicGrammars)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "tests\functional\test_LogicGrammars.py", line 30, in testLogicalExp
    result = parser.get_trees(tokens)
  File "C:\Program Files\Python38\lib\site-packages\pydsl\parser\backtracing.py"
, line 35, in get_trees
    if not all(check(self._productionset.alphabet, x) for x in data):
  File "C:\Program Files\Python38\lib\site-packages\pydsl\parser\backtracing.py"
, line 35, in <genexpr>
    if not all(check(self._productionset.alphabet, x) for x in data):
  File "C:\Program Files\Python38\lib\site-packages\pydsl\check.py", line 32, in
 check
    return checker(data, *args, **kwargs)
  File "C:\Program Files\Python38\lib\site-packages\pydsl\check.py", line 75, in
 __call__
    return self.check(*args, **kwargs)
  File "C:\Program Files\Python38\lib\site-packages\pydsl\check.py", line 219, i
n check
    return any((x.check(data) for x in self.checkerinstances))
  File "C:\Program Files\Python38\lib\site-packages\pydsl\check.py", line 219, i
n <genexpr>
    return any((x.check(data) for x in self.checkerinstances))
  File "C:\Program Files\Python38\lib\site-packages\pydsl\check.py", line 128, i
n check
    if not check(self.gd.alphabet, element):
  File "C:\Program Files\Python38\lib\site-packages\pydsl\check.py", line 32, in
 check
    return checker(data, *args, **kwargs)
  File "C:\Program Files\Python38\lib\site-packages\pydsl\check.py", line 75, in
 __call__
    return self.check(*args, **kwargs)
  File "C:\Program Files\Python38\lib\site-packages\pydsl\check.py", line 218, i
n check
    data = self._normalize_input(data)
  File "C:\Program Files\Python38\lib\site-packages\pydsl\check.py", line 82, in
 _normalize_input
    for x in data:
TypeError: 'BNFGrammar' object is not iterable

======================================================================
ERROR: testTrueFalse (__main__.TestLogicGrammars)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "tests\functional\test_LogicGrammars.py", line 37, in testTrueFalse
    result = parser.get_trees(tokens)
  File "C:\Program Files\Python38\lib\site-packages\pydsl\parser\backtracing.py"
, line 36, in get_trees
    raise ValueError("Unknown element in %s" % str(data))
ValueError: Unknown element in [Token(content=['T', 'r', 'u', 'e'], gd=['T', 'r'
, 'u', 'e'])]

----------------------------------------------------------------------
Ran 5 tests in 0.193s

FAILED (errors=4, skipped=1)

I'm really confused what is going wrong here.