无法导入模块 ANTLR MyGrammarLexer 和 MyGrammarParser

Question

我正在尝试从ANTLR开始。当我导入模块时antlr它工作得很好，但是如果我尝试导入MyGrammarLexer和MyGrammarParser，它表明 MyGrammarLexer 和 Parser 不在 lib 中。我使用 PyCharm ，安装了 ANTLR： pip3 install antlr4-python3-runtime我的代码是：

import sys
from antlr4 import *
import MyGrammarLexer
import MyGrammarParser


def main(argv):
    input = FileStream(argv[1])
    lexer = MyGrammarLexer(input)
    stream = CommonTokenStream(lexer)
    parser = MyGrammarParser(stream)
    tree = parser.startRule()


if __name__ == '__main__':
    main(sys.argv)

也许谁知道为什么我无法导入 MyGrammarLexer 和 MyGrammarParser？请建议！反击：

    /usr/bin/python3.6 /home/andrejka/PycharmProjects/Parser/parser.py
Traceback (most recent call last):
  File "/home/andrejka/PycharmProjects/Parser/parser.py", line 2, in <module>
    from antlr4 import *
  File "/usr/lib/python3/dist-packages/antlr4/__init__.py", line 5, in <module>
    from antlr4.BufferedTokenStream import TokenStream
  File "/usr/lib/python3/dist-packages/antlr4/BufferedTokenStream.py", line 19, in <module>
    from antlr4.error.Errors import IllegalStateException
  File "/usr/lib/python3/dist-packages/antlr4/error/Errors.py", line 5, in <module>
    from antlr4.atn.Transition import PredicateTransition
  File "/usr/lib/python3/dist-packages/antlr4/atn/Transition.py", line 19, in <module>
    from __builtin__ import unicode
ModuleNotFoundError: No module named '__builtin__'
Error in sys.excepthook:
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/apport_python_hook.py", line 63, in apport_excepthook
    from apport.fileutils import likely_packaged, get_recent_crashes
  File "/usr/lib/python3/dist-packages/apport/__init__.py", line 5, in <module>
    from apport.report import Report
  File "/usr/lib/python3/dist-packages/apport/report.py", line 30, in <module>
    import apport.fileutils
  File "/usr/lib/python3/dist-packages/apport/fileutils.py", line 23, in <module>
    from apport.packaging_impl import impl as packaging
  File "/usr/lib/python3/dist-packages/apport/packaging_impl.py", line 23, in <module>
    import apt
  File "/usr/lib/python3/dist-packages/apt/__init__.py", line 23, in <module>
    import apt_pkg
ModuleNotFoundError: No module named 'apt_pkg'

Original exception was:
Traceback (most recent call last):
  File "/home/andrejka/PycharmProjects/Parser/parser.py", line 2, in <module>
    from antlr4 import *
  File "/usr/lib/python3/dist-packages/antlr4/__init__.py", line 5, in <module>
    from antlr4.BufferedTokenStream import TokenStream
  File "/usr/lib/python3/dist-packages/antlr4/BufferedTokenStream.py", line 19, in <module>
    from antlr4.error.Errors import IllegalStateException
  File "/usr/lib/python3/dist-packages/antlr4/error/Errors.py", line 5, in <module>
    from antlr4.atn.Transition import PredicateTransition
  File "/usr/lib/python3/dist-packages/antlr4/atn/Transition.py", line 19, in <module>
    from __builtin__ import unicode
ModuleNotFoundError: No module named '__builtin__'

Answer 1

我最近在使用 pddlpy python 库遇到同样的错误时遇到了这个问题。我能够通过执行以下操作来修复它：

pip3 install antlr4-python3-runtime==4.9

最后的4.9版本非常重要。