无法使用 Jython Jar 执行 -m Ensurepip

Question

我无法执行以下命令”

java -jar ~/.m2/repository/org/python/jython-standalone/2.7.0/jython-standalone-2.7.0.jar -m ensurepip

我得到以下堆栈跟踪。谁能指导我问题是什么以及如何解决？

    Traceback (most recent call last):
  File "/Users/***/.m2/repository/org/python/jython-standalone/2.7.0/jython-standalone-2.7.0.jar/Lib/runpy.py", line 161, in _run_module_as_main
  File "/Users/***/.m2/repository/org/python/jython-standalone/2.7.0/jython-standalone-2.7.0.jar/Lib/runpy.py", line 72, in _run_code
  File "/Users/***/.m2/repository/org/python/jython-standalone/2.7.0/jython-standalone-2.7.0.jar/Lib/ensurepip/__main__.py", line 4, in <module>
  File "/Users/***/.m2/repository/org/python/jython-standalone/2.7.0/jython-standalone-2.7.0.jar/Lib/ensurepip/__init__.py", line 220, in _main
  File "/Users/***/.m2/repository/org/python/jython-standalone/2.7.0/jython-standalone-2.7.0.jar/Lib/ensurepip/__init__.py", line 123, in bootstrap
  File "/Users/***/.m2/repository/org/python/jython-standalone/2.7.0/jython-standalone-2.7.0.jar/Lib/ensurepip/__init__.py", line 45, in _run_pip
  File "/var/folders/96/llwnx0n57vd17gtfyw124z500000gq/T/tmpARwn47/pip-1.6-py2.py3-none-any.whl/pip/__init__.py", line 10, in <module>
  File "/var/folders/96/llwnx0n57vd17gtfyw124z500000gq/T/tmpARwn47/pip-1.6-py2.py3-none-any.whl/pip/util.py", line 13, in <module>
  File "/var/folders/96/llwnx0n57vd17gtfyw124z500000gq/T/tmpARwn47/pip-1.6-py2.py3-none-any.whl/pip/backwardcompat/__init__.py", line 115, in <module>
  File "/Users/***/.m2/repository/org/python/jython-standalone/2.7.0/jython-standalone-2.7.0.jar/Lib/distutils/sysconfig.py", line 28, in <module>
  File "/Users/***/.m2/repository/org/python/jython-standalone/2.7.0/jython-standalone-2.7.0.jar/Lib/posixpath.py", line 367, in realpath
  File "/Users/***/.m2/repository/org/python/jython-standalone/2.7.0/jython-standalone-2.7.0.jar/Lib/posixpath.py", line 373, in _joinrealpath
  File "/Users/***/.m2/repository/org/python/jython-standalone/2.7.0/jython-standalone-2.7.0.jar/Lib/posixpath.py", line 61, in isabs
AttributeError: 'NoneType' object has no attribute 'startswith'

谢谢和问候，
稻田

尝试搜索此特定错误并得到this post作为第一个搜索结果，但它并没有真正帮助我。

Answer 1

我发现这个旧帖子，其中 Jython 无法填充 Python 可执行文件名，导致它为 None。如果

ensurepip

将其传递给

path.abs

，您将收到此处看到的错误。

如果是您的情况，您可以通过将值作为

-Dpython.executable

变量传递给 Java 本身来修复它：

java -Dpython.executable="~/.m2/repository/org/python/jython-standalone/2.7.0/jython-standalone-2.7.0.jar" -jar ~/.m2/repository/org/python/jython-standalone/2.7.0/jython-standalone-2.7.0.jar -m ensurepip