转换为Jython Python 3.5项目 - UnicodeDecodeError:'unicodeescape'编解码器无法解码位置4-10中的字节:非法Unicode字符

Question

我的最终目的是将正在运行的Python项目转换为Jython解释器,因为将添加一些Java API.

细节:

• 最新的Jython是2.7
• 我拥有的项目可以使用Python 3.5运行

所以我采取了以下方法:

首先是使用未来模块和巴氏杀菌可执行文件将我的项目转换为Python 2.7.这一步成功完成.

第二件事是将Python 2.7项目转换为Jython 2.7项目.在Eclipse mars处切换解释器时,指示了以下错误:

console: Failed to install '': java.nio.charset.UnsupportedCharsetException: cp0.

为了解决这个问题,通过将编码参数传递给java VM,使用了这篇文章的解决方案,-Dpython.console.encoding=UTF-8如下图所示:

试图再次运行时拇指向上.但不幸的是,这里出现的错误就出现了.由于我不打算更改任何导入的模块,如果没有必要这样做,我决定在这里寻求帮助.

pydev debugger: starting (pid: 4216)
Traceback (most recent call last):
  File "C:\Users\souzadan\.p2\pool\plugins\org.python.pydev_4.4.0.201510052309\pysrc\pydevd.py", line 2364, in <module>
    globals = debugger.run(setup['file'], None, None, is_module)
  File "C:\Users\souzadan\.p2\pool\plugins\org.python.pydev_4.4.0.201510052309\pysrc\pydevd.py", line 1784, in run
    pydev_imports.execfile(file, globals, locals)  # execute the script
  File "C:\Users\souzadan\FirmwareDevTools\Workspaces\Eclipse\aPythonWorkspace\aPythonProject\aPythonFolder\aPythonFile.py", line 7, in <module>
    standard_library.install_aliases()
  File "C:\Users\souzadan\FirmwareDevTools\Compilers\Jython2.7.0\Lib\site-packages\future-0.15.2-py2.7.egg\future\standard_library\__init__.py", line 465, in install_aliases
    from future.backports.urllib import request
  File "C:\Users\souzadan\FirmwareDevTools\Compilers\Jython2.7.0\Lib\site-packages\future-0.15.2-py2.7.egg\future\backports\urllib\request.py", line 96, in <module>
    from future.backports import email
  File "C:\Users\souzadan\FirmwareDevTools\Compilers\Jython2.7.0\Lib\site-packages\future-0.15.2-py2.7.egg\future\backports\email\__init__.py", line 16, in <module>
    from future.utils import surrogateescape
  File "C:\Users\souzadan\FirmwareDevTools\Compilers\Jython2.7.0\Lib\site-packages\future-0.15.2-py2.7.egg\future\utils\surrogateescape.py", line 167, in <module>
    FS_ENCODING = 'ascii'; fn = b('[abc\xff]'); encoded = u('[abc\udcff]')
  File "C:\Users\souzadan\FirmwareDevTools\Compilers\Jython2.7.0\Lib\site-packages\future-0.15.2-py2.7.egg\future\utils\surrogateescape.py", line 25, in u
    return text.decode('unicode_escape')
UnicodeDecodeError: 'unicodeescape' codec can't decode bytes in position 4-10: illegal Unicode character
Error in atexit._run_exitfuncs:
Traceback (most recent call last):
  File "C:\Users\souzadan\FirmwareDevTools\Compilers\Jython2.7.0\Lib\atexit.py", line 24, in _run_exitfuncs
    func(*targs, **kargs)
  File "C:\Users\souzadan\FirmwareDevTools\Compilers\Jython2.7.0\Lib\threading.py", line 297, in _MainThread__exitfunc
    t.join()
  File "C:\Users\souzadan\FirmwareDevTools\Compilers\Jython2.7.0\Lib\threading.py", line 128, in join
    raise RuntimeError("cannot join current thread")
RuntimeError: cannot join current thread
Error in sys.exitfunc:
Traceback (most recent call last):
  File "C:\Users\souzadan\FirmwareDevTools\Compilers\Jython2.7.0\Lib\atexit.py", line 24, in _run_exitfuncs
    func(*targs, **kargs)
  File "C:\Users\souzadan\FirmwareDevTools\Compilers\Jython2.7.0\Lib\threading.py", line 297, in _MainThread__exitfunc
    t.join()
  File "C:\Users\souzadan\FirmwareDevTools\Compilers\Jython2.7.0\Lib\threading.py", line 128, in join
    raise RuntimeError("cannot join current thread")
RuntimeError: cannot join current thread

通过命令行运行Jython会导致错误日志更短:

Traceback (most recent call last):
  File "somePythonCode.py", line 7, in <module>
    standard_library.install_aliases()
  File "C:\Users\souzadan\FirmwareDevTools\Compilers\Jython2.7.0\Lib\site-packages\future-0.15.2-py2.7.egg\future\standard_library\__init__.py", line 465, in install_aliases
    from future.backports.urllib import request
  File "C:\Users\souzadan\FirmwareDevTools\Compilers\Jython2.7.0\Lib\site-packages\future-0.15.2-py2.7.egg\future\backports\urllib\request.py", line 96, in <module>
    from future.backports import email
  File "C:\Users\souzadan\FirmwareDevTools\Compilers\Jython2.7.0\Lib\site-packages\future-0.15.2-py2.7.egg\future\backports\email\__init__.py", line 16, in <module>
    from future.utils import surrogateescape
  File "C:\Users\souzadan\FirmwareDevTools\Compilers\Jython2.7.0\Lib\site-packages\future-0.15.2-py2.7.egg\future\utils\surrogateescape.py", line 167, in <module>
    FS_ENCODING = 'ascii'; fn = b('[abc\xff]'); encoded = u('[abc\udcff]')
  File "C:\Users\souzadan\FirmwareDevTools\Compilers\Jython2.7.0\Lib\site-packages\future-0.15.2-py2.7.egg\future\utils\surrogateescape.py", line 25, in u
    return text.decode('unicode_escape')
UnicodeDecodeError: 'unicodeescape' codec can't decode bytes in position 4-10: illegal Unicode character

有没有人知道如何以最优雅的方式解决这个错误？

在Jython.org上创建了一个具有严重严重性的错误,因为许多人已经在使用最新的Python模块和解释器.他们可能希望在代码中添加Java功能.所以他们基本上必须采取与我相同的道路.然后将项目反向移植到Python 2.7,然后再移植到Jython 2.7.

在python-future,也记录了一个功能请求错误.

Answer 1

正如 Roland Smith 所建议的那样，依靠 py4j 是将应用程序移植到 JVM 环境的好方法。