AW: AW: AW: AW: [Jython-users] Import doesn't work (perfectly - but it does!)

[Joern E. <Joe...@mi...>]

Hi all.

Here are now the latest results from my try to import within a script. 
Likely this will be the last e-mil from me. At the moment I'm the 
doc-writer-man because my practical work (I'm a student) will be finished 
in two weeks, therefore I have to write one report for my employer as well 
as one for the Fachhochschule (It's comparable to a college).
Ok guys, here we go:

> On Wed, 25 Jul 2001, Joern Eckhoff wrote:
> > now my script looks like this:
> >
> > # ----------- begin ob script
> > import java
> > java.lang.System.getProperty("python.home")
> > java.lang.System.getProperty("python.path")
> >
> > import sys
> > sys.path.append("c:\\program files\\jython;c:\\program 
files\\jython\\lib")
>
> This append may be the culprit. Sorry if I've missed this in earlier
> mails, but for...
>
>     sys.path.append("c:\\;c:\\windows\\desktop")
>     import test  # a Jython script on my desktop
>
> The above does not work. sys.path is a list of individual directories,
> rather than system directory representations (e.g.
> ["\\path\\one", "\\path\\two"] instead of \\path\\one;\\path\\two).
> Instead, if I use:
>
>     sys.path.append("c:\\")
>     sys.path.append("c:\\windows\\desktop")
>     import test  # a Jython script on my desktop
>
> All is well.  So, give this a try:
>
>     sys.path.append("c:\\program files\\jython\\Lib") # only one dir
>     # or
>     sys.path.extend(
>         ("c:\\program files\\jython", "c:\\program files\\jython\\Lib")
>     )

I've changed this part of my script and now it looks like this:

import sys
sys.path.append("c:\\program files\\jython")
sys.path.append("c:\\program files\\jython\\lib")

> > print "python.home: ",java.lang.System.getProperty("python.home")
> > print "python.path: ",java.lang.System.getProperty("python.path")
> > print "sys.path: ",sys.path
> > print "sys.prefix: ",sys.prefix
> >
> > # Import support for strings
> > import string
> >
> > # Get the value of the scalar node
> > value = scriptinterface.getNodeValue(".1.3.6.1...")
> >
> > # Convert value to INT
> > valueAsInt=string.atoi(value)
> >
> > # Add 1 to value
> > valueAsInt=valueAsInt+1
> >
> > # Set a limit of 8 for value
> > if valueAsInt > 8:
> > 	valueAsInt=1
> >
> > # Convert valueAsInt back to string
> > value=str(valueAsInt)
> >
> > # Write back (increased) value to node
> > scriptinterface.updateValue(".1.3.6.1...",value,"CONST")
> > # ----------- end ob script

<snip>

> > - the
> > '.\\jars\\Lib' is the path leading to the jars containing all the
> > class-files of the AgentSimulator. The module 'string.py' actually is
> > present at 'c:\program files\jython\lib'. Doesn't it indicate the path 
to
> > the modules is missing? Does jython use sys.path as well as 
python.path?
>
> Properties, like python.path, python.home and etcettera, are all about
> initializing Jython. Java code takes steps to set Jython's system state
> before actually creating the interpreter instance, and these property
> values are what is used in these steps. The main step is
> PythonInterpreter.initialize(), but remember that this method should be
> called before instantiating an interpreter. After instantiation, Jython's
> sys module as the final word. python.path is added to the sys.path during
> initialization. Following that, what is in sys.path is the final word.

Ok, I see. Then it wouldn't wonder that the script now works. There's only 
one blemish left. When starting the script _the first time_ (i.e. when 
PythonInterpreter is initialized the first time after restart) it results 
in a NoSuchMethodError thrown by the module string.py in line 418. I've 
attached the log-file, the script and my version of string.py (please see 
attached file.zip) to let you have a look at it.

For me it looks like string.py couldn't find the module named strop.?. I've 
searched for it with mask *strop*.* at c:\ and all subfolders but the only 
file I've found was test_strop.py at c:\program files\Python\Lib\test. I 
guess everthing will be all right after adding strop.? to my installation.

<snip>

> Cheers,
> Robert

cu Joe