[Jython-bugs] [ jython-Bugs-462280 ] builtin method as a class variable

[<no...@so...>]

Bugs item #462280, was opened at 2001-09-17 10:01
You can respond by visiting: 
http://sourceforge.net/tracker/?func=detail&atid=112867&aid=462280&group_id=12867

Category: Core
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Nobody/Anonymous (nobody)
>Assigned to: Finn Bock (bckfnn)
Summary: builtin method as a class variable

Initial Comment:
This has a simple test case, but I'm not sure that the 
solution is simple. This particular case is in the 
context of a list object, but it is possible that 
other objects suffer from the same problem.

Jython 2.1a3 on java1.3.0 (JIT: null)
Type "copyright", "credits" or "license" for more 
information.
>>> class Foo:
...   mylistIndex = ['a', 'b', 'c', 'd', 'e'].index
...
>>> a = Foo()
>>> a.mylistIndex
<builtin method 'index'>
>>> a.mylistIndex('c')
Traceback (innermost last):
  File "<console>", line 1, in ?
TypeError: index(): expected 1 args; got 2
>>>
>>> Foo.mylistIndex('c')
Traceback (innermost last):
  File "<console>", line 1, in ?
java.lang.NullPointerException
        at org.python.core.ListFunctions.__call__
(PyList.java)
        at org.python.core.PyObject.invoke
(PyObject.java)
        at org.python.pycode._pyx2.f$0(<console>:1)
        at org.python.pycode._pyx2.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
(InteractiveInterpret
er.java)
        at
org.python.util.InteractiveInterpreter.runsource
(InteractiveInterpret
er.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)

java.lang.NullPointerException: 
java.lang.NullPointerException


For reference, CPython doesn't choke on this:

Python 2.1 (#1, Apr 17 2001, 09:45:01)
[GCC 2.95.3-2 (cygwin special)] on cygwin_nt-4.01
Type "copyright", "credits" or "license" for more 
information.
>>> class Foo:
...   mylistIndex = ['a', 'b', 'c', 'd', 'e'].index
...
>>> a = Foo()
>>> a.mylistIndex
<built-in method index of list object at 0xa04da34>
>>> a.mylistIndex('c')
2
>>>


----------------------------------------------------------------------

>Comment By: Finn Bock (bckfnn)
Date: 2001-10-30 11:01

Message:
Logged In: YES 
user_id=4201

Added as test328.py

----------------------------------------------------------------------

You can respond by visiting: 
http://sourceforge.net/tracker/?func=detail&atid=112867&aid=462280&group_id=12867