Issue2477

After a fresh Jython 2.7.1 beta 3 installation with default settings on Windows 7 with Java 1.8.0_73 neither `jython -m pip` nor `pip` work.

C:\Users\peke>c:\jython2.7.1b3\bin\jython.exe -m pip install robotframework
Traceback (most recent call last):
  File "C:\jython2.7.1b3\Lib\runpy.py", line 151, in _run_module_as_main
    mod_name, loader, code, fname = _get_module_details(mod_name)
  File "C:\jython2.7.1b3\Lib\runpy.py", line 151, in _run_module_as_main
    mod_name, loader, code, fname = _get_module_details(mod_name)
  File "C:\jython2.7.1b3\Lib\runpy.py", line 104, in _get_module_details
    if loader.is_package(mod_name):
AttributeError: 'org.python.core.JavaImporter' object has no attribute 'is_package'

C:\Users\peke>c:\jython2.7.1b3\bin\pip.exe install robotframework
Traceback (most recent call last):
  File "C:\jython2.7.1b3\Lib\runpy.py", line 161, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "C:\jython2.7.1b3\Lib\runpy.py", line 72, in _run_code
    exec code in run_globals
  File "c:\jython2.7.1b3\bin\pip.exe\__main__.py", line 5, in <module>
ImportError: cannot import name main

On Windows 8.1 and Java 7, both jython.exe -m pip and pip.exe work for me for installing robotframework:

c:\jython2.7.1b3>bin\jython.exe
Jython 2.7.1b3 (default:df42d5d6be04, Feb 3 2016, 03:22:46)
[Java HotSpot(TM) 64-Bit Server VM (Oracle Corporation)] on java1.7.0_55
Type "help", "copyright", "credits" or "license" for more information.
>>>
c:\jython2.7.1b3>bin\jython.exe -m pip install robotframework
Collecting robotframework
  Downloading robotframework-3.0.tar.gz (430kB)
←[K    100% |################################| 434kB 262kB/s ta 0:00:01
←[?25hInstalling collected packages: robotframework
  Running setup.py install for robotframework
Successfully installed robotframework-3.0
←[33mYou are using pip version 7.1.2, however version 8.0.2 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.←[0m

c:\jython2.7.1b3>bin\pip.exe install --force --upgrade robotframework
Collecting robotframework
  Using cached robotframework-3.0.tar.gz
Installing collected packages: robotframework
  Found existing installation: robotframework 3.0
    Uninstalling robotframework-3.0:
      Successfully uninstalled robotframework-3.0
  Running setup.py install for robotframework
Successfully installed robotframework-3.0
←[33mYou are using pip version 7.1.2, however version 8.0.2 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.←[0m

(At some point we should fix the pip tool so as to not try to color output on Windows when run with Jython, to avoid these control characters being output. Another os._name vs os.name issue I'm sure.)

The problem was caused by pip directory in the directory where I executed these commands. Jython apparently imported it as a pip module and that broke everything. I know Jython imports directories without __init__.py as modules to support Java packages, but this wasn't the first time an accidentally matching directory caused problems.

Both `jython -m pip` and `pip` worked fine after removing the offending directory. This issue can be closed.

Notice that the directory only had an old `pip.log` file. Apparently it was created by some pip version at some point.

Ack. And we do have one open bug about Java packages and __init__.py, hopefully this will not have other confounding impacts.

Closing out.

Bug I mentioned in my previous message: http://bugs.jython.org/issue2455