How to solve the sys.executable issue being empty when running Jython standalone?

[Pad Ven]

Hi all,

I am unable to execute the following command"
java -jar ~/.m2/repository/org/python/jython-standalone/2.7.0/jython-standalone-2.7.0.jar -m ensurepip

I get the following stack trace. Can anyone please guide me as to what is the issue and how to solve it?

   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'

Thanks and regards,
Paddy

Tried searching for this specific error and got [url]this post[https://stackoverflow.com/questions/59284551/jython-unable-to-install-ensurepip] as the first search result but it didn't really helpe me.

[Giovanni Montano]

write here https://github.com/jython/jython/issues/

Please look before in internet how you are supposed to write an issue in github is the official repository, so is good if you do your homeworks

good luck!

[Tim Holloway]

I really don't recommend running Jython directly from the Maven repository. It would be cleaner to keep a copy in a more traditional place such as a ~/bin/ directory.

You can download the standalone 2.7 release from here: https://www.jython.org/download

However, this references Python 2.7. Python 2 went solidly end-of-life over 2 years ago now and many distros no longer install or support it.

Attempting to run Python 2.7 under the Python 3 infrastructure probably will bomb as there are significant differences. It's not backwards-compatible like Java is.