[Bug 347789] [NEW] jython can't find standard libraries

[Daanemanz]

Public bug reported:

Binary package hint: jython

Using The Grinder, we came up to a quirk in jython 2.2.1 on Intrepid
32-bit. When using jython scripts from The Grinder, we use standard
jython (2.2.1-1ubuntu3) and java (sun-java6-jre, jdk and bin, version
6-07-3ubuntu2) libraries, but in some cases jython cannot find these
libraries.

jython.jar itself is located in /usr/share/java, whereas its libraries
are located in /usr/share/jython/Lib. I'm sure that the 'standard'
/usr/bin/jython script sets the directories correctly, but when jython
is started directly from its directory by calling 'java -jar
/usr/share/java/jython.jar', and you try to import, let's say 'random',
jython will give you an error:

me at mylaptop:/usr/share/java$ java -jar jython.jar 
Jython 2.2.1 on java1.6.0_07
>>> import random
Traceback (innermost last):
  File "<console>", line 1, in ?
ImportError: no module named random

We also found a workaround by creating a symlink to
/usr/share/jython/Lib in the /usr/share/java directory. Somehow jython
looks for a 'Lib' directory in its current directory to find its
libraries. We think that either jython.jar should be placed in the
/usr/share/jython directory, or a symlink as described should be added
to the package.

** Affects: jython (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: jython

** Description changed:

  Binary package hint: jython
  
  Using The Grinder, we came up to a quirk in jython 2.2.1 on Intrepid
  32-bit. When using jython scripts from The Grinder, we use standard
  jython (2.2.1-1ubuntu3) and java (sun-java6-jre, jdk and bin, version
  6-07-3ubuntu2) libraries, but in some cases jython cannot find these
  libraries.
  
  jython.jar itself is located in /usr/share/java, whereas its libraries
  are located in /usr/share/jython/Lib. I'm sure that the 'standard'
  /usr/bin/jython script sets the directories correctly, but when jython
  is started directly from its directory by calling 'java -jar
  /usr/share/java/jython.jar', and you try to import, let's say 'random',
  jython will give you an error:
  
  me at mylaptop:/usr/share/java$ java -jar jython.jar 
- Jython 2.2.1 on java1.6.0_10
+ Jython 2.2.1 on java1.6.0_07
  >>> import random
  Traceback (innermost last):
    File "<console>", line 1, in ?
  ImportError: no module named random
  
  We also found a workaround by creating a symlink to
  /usr/share/jython/Lib in the /usr/share/java directory. Somehow jython
  looks for a 'Lib' directory in its current directory to find its
  libraries. We think that either jython.jar should be placed in the
  /usr/share/jython directory, or a symlink as described should be added
  to the package.

-- 
jython can't find standard libraries
https://bugs.launchpad.net/bugs/347789
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