Issue1719528

Importing a package via the -c command-line option is not working for me in Jython 2.2b2. It does work from an interactive session and from a script. I am using the version of Jython installed by the official installer on Windows.

Example session in Command Prompt window:

Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\Documents and Settings\davhan>mkdir C:\temp2

C:\Documents and Settings\davhan>cd C:\temp2

C:\temp2>mkdir p1

C:\temp2>copy nul p1\__init__.py
        1 file(s) copied.

C:\temp2>jython
Jython 2.2b2 on java1.4.2_05
Type "copyright", "credits" or "license" for more information.
>>> import p1
>>> p1.__file__
'C:\\temp2\\p1\\__init__.py'
>>> ^Z


C:\temp2>jython -c "import p1"
Traceback (innermost last):
  File "<string>", line 1, in ?
ImportError: no module named p1

C:\temp2>

A simpler way to describe the problem is that running Jython 2.2b2 with the -c option doesn't put an empty string (representing the current directory) in sys.path like it used to do.

C:\temp2>jython -c "import sys; print sys.path"
['C:\\home\\davhan\\tools\\jython2.2b2\\Lib', 'C:\\home\\davhan\\lib\\python', '
__classpath__', 'C:\\home\\davhan\\tools\\jython2.2b2']

C:\temp2>jython
Jython 2.2b2 on java1.4.2_05
Type "copyright", "credits" or "license" for more information.
>>> import sys; print sys.path
['', 'C:\\home\\davhan\\tools\\jython2.2b2\\Lib', 'C:\\home\\davhan\\lib\\python
', '__classpath__', 'C:\\home\\davhan\\tools\\jython2.2b2']
>>>

This has a simple, one-line fix in jython.java which I have tested and have been using for weeks. I'll attempt to post my fix as an official "patch". I'm hope that the fix gets into Jython 2.2 soon.

I posted patch 1743594 containing the fix.

Fixed in r3284.  We were actually already adding "" to sys.path for the interactive interpreter right below your patch, so I just moved the exec of the command string to right after that.  That has the benefit of not adding '' twice if you use jython -i -c.  The patch definitely pointed me in the right direction though, so thanks for submitting it!