无法导入模块ANTLR MyGrammarLexer和MyGrammarParser [英] Can't import module ANTLR MyGrammarLexer and MyGrammarParser

问题描述

我正尝试从 ANTLR 开始.当我导入模块antlr时，它工作正常，但是如果我尝试导入 MyGrammarLexer 和 MyGrammarParser ，则表明MyGrammarLexer和Parser不在lib中.我使用PyCharm时，使用以下命令安装了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不能导入MyGrammarLexer和MyGrammarParser? 请提出建议！ 技巧:

    /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__'

解决方案

我发现了包装中的内容:

解决方案

I found out that content of the package:

https://pypi.python.org/packages/0b/6b/30c5b84d203b62e1412d14622e3bae6273399d79d20f3a24c8145213f610/antlr4-python3-runtime-4.7.tar.gz#md5=190245a0fb4abf43568489a4b6e33aba

is different from the package installed by pip3.

I have replaced content of:

~/anaconda3/envs/py3/lib/python3.6/site-packages/antlr4

with content from the package I have downloaded and extracted manually:

~/Downloads/antlr4-python3-runtime-4.7/src/antlr4

It seems to be working now - in particular the following error:

ModuleNotFoundError: No module named '__builtin__'

does not occur.

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