jython-users

[Jython-users] Jython exceptions

[Yang W. <yw...@pr...>]

Hi All,

I have read the book "Learning Python" and almost all online docs but
could not find info on how to print out the entire stack trace of Java
Exceptions.  Any ideas?

Thanks in advance.

Yang

Re: [Jython-users] Jython exceptions

[Carl P. <c.j...@hu...>]

Yang,
  to get exception information, you need to use the sys module.

  sys.exc_info() will get you a triple. The third component of which is
a traceback object.

  Using the traceback module you can then print out the exception stack
as you require.

  Hope that helps,

    Carl.

--
Dr. Carl Pulley (Lecturer)
School of Computing and Mathematics,
University of Huddersfield,             email: c.j...@hu...
Huddersfield                            WWW:
http://scom.hud.ac.uk/scomcjp

Re: [Jython-users] Jython exceptions

[Kevin B. <kb...@ca...>]

>>> import traceback
>>> from java.lang import *
>>> try:
...   String( None )
... except Exception, x:
...   print "As Python:"
...   traceback.print_exc()
...   print "As Java:"
...   x.printStackTrace()
... 
As Python:
Traceback (most recent call last):
  File "<console>", line 2, in ?
java.lang.NullPointerException: java.lang.NullPointerException
As Java:
java.lang.NullPointerException
	at java.lang.String.<init>(String.java:193)
	at java.lang.reflect.Constructor.newInstance(Native Method)
	at org.python.core.PyReflectedConstructor.__call__(PyReflectedConstructor.java)
	at org.python.core.PyJavaInstance.__init__(PyJavaInstance.java)
	at org.python.core.PyJavaClass.__call__(PyJavaClass.java)
	at org.python.core.PyObject.__call__(PyObject.java)
	at org.python.pycode._pyx9.f$0(<console>:2)
	at org.python.pycode._pyx9.call_function(<console>)
	at org.python.core.PyTableCode.call(PyTableCode.java)
	at org.python.core.PyCode.call(PyCode.java)
	at org.python.core.Py.runCode(Py.java)
	at org.python.core.Py.exec(Py.java)
	at org.python.util.PythonInterpreter.exec(PythonInterpreter.java)
	at org.python.util.InteractiveInterpreter.runcode(InteractiveInterpreter.java)
	at org.python.util.InteractiveInterpreter.runsource(InteractiveInterpreter.java)
	at org.python.util.InteractiveInterpreter.runsource(InteractiveInterpreter.java)
	at org.python.util.InteractiveConsole.push(InteractiveConsole.java)
	at org.python.util.InteractiveConsole.interact(InteractiveConsole.java)
	at org.python.util.jython.main(jython.java)
>>> 

kb

Yang Wang wrote:
> 
> Hi All,
> 
> I have read the book "Learning Python" and almost all online docs but
> could not find info on how to print out the entire stack trace of Java
> Exceptions.  Any ideas?
> 
> Thanks in advance.
> 
> Yang
> 
> _______________________________________________
> Jython-users mailing list
> Jyt...@li...
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