Re: [Jython-dev] bug: calling a builtin method as a class variable

[Samuele P. <pe...@in...>]

Yes, it's a bug.
Don't how complex is to fix, in any case is from a part of JPython
that we haven't touched and which is quite fragile.

Please submit a bug report to SF, if you haven't do so yet.

Thanks, Samuele Pedroni.

> From: "Kevin Dangoor" <kda...@we...>
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> X-Original-Date: Mon, 17 Sep 2001 12:08:55 -0400
> Date: Mon, 17 Sep 2001 12:08:55 -0400
> 
> This has a simple test case, but I'm not sure that the solution is simple.
> 
> 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
> >>>
> 
> 
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