Re: [Jython-users] Newb question: how do I determine an object's public methods?

[Jake B <ota...@gm...>]

You are correct, I am able to import inspect with Jython 2.2. It doesn't
seem to work on all classes though. For example, I can do this, and
everything is happy:

Jython Completion Shell
JythJython Completion Shell
Jython 2.2 on java1.5.0_10
>>> import inspect
>>> class Test:
...     def testMethod():
...         print 'foo'
...
>>> t = Test()
>>> t
<<unknown>.Test instance 1>
>>> inspect.getmembers(t,inspect.ismethod)
[('testMethod', <method Test.testMethod of Test instance 1>)]

But if I try the same thing with a JFrame, it doesn't work:

>>> from javax.swing import JFrame
>>> f = JFrame()
>>> f
javax.swing.JFrame[frame0,0,0,0x0,invalid,hidden,layout=
java.awt.BorderLayout
,title=,resizable,normal,defaultCloseOperation=HIDE_ON_CLOSE,rootPane=
javax.swing.JRootPane[,0,0,0x0,invalid,layout=
javax.swing.JRootPane$RootLayout,alignmentX=0.0,alignmentY=0.0
,border=,flags=16777673,maximumSize=,minimumSize=,preferredSize=],rootPaneCheckingEnabled=true]
>>> inspect.getmembers(f,inspect.ismethod)
Traceback (most recent call last):
  File "<input>", line 1, in ?
  File "/mathworks/home/jbeard/jythonconsole-0.0.4/inspect.py", line 160, in
getmembers
    value = getattr(object, key)
TypeError: write only attribute

Is this normal? Could anyone explain why this is happening?
Please let me know. Thanks.

Jake

On 8/23/07, Charlie Groves <cha...@gm...> wrote:
>
> inspect has been added to Jython 2.2, so you should be able to import
> it with that version.
>
> Charlie
>
> On 8/23/07, Don Coleman <dco...@ch...> wrote:
> > Your import failed because inspect.py is not included with Jython 2.1.
> >  For jythonconsole I used inspect.py from CPython 2.2.2.
> >
> > On 8/22/07, Jake B <ota...@gm...> wrote:
> > > Just a quick note:
> > > I tried import inspect under jython 2.2rc3, and it works fine, but it
> fails
> > > under jython 2.1.
> > > Is this normal?
> > > Please let me know. Thanks.
> > >
> > > Jake
> > >
> > >
> > > On 8/22/07, Jake B <ota...@gm...> wrote:
> > > > Thank you for the quick replies! Jythonconsole is very interesting.
> Also,
> > > I found that the commercial version of Pydev supports some
> autocompletion
> > > and autoimports libraries. Unfortunately, Pydev autocompletion doesn't
> work
> > > perfectly, and jythonconsole does not yet adequately fulfill my needs
> for an
> > > editing environment.
> > > > For now, I'd just be happy to have the inspect module working. The
> > > developer of jythonconsole says that he uses inspect.py in his
> > > implementation, but whenever i'm using jython and I try to import it,
> I
> > > always get an error message saying that the module cannot be found.
> When I'm
> > > in python, however, I'm able to import it just fine.
> > > > If anyone has any advice as to how I could troubleshoot this, I
> would
> > > greatly appreciate it if you would let me know. Thanks.
> > > >
> > > > Jake
> > > >
> > > >
> > > >
> > > > On 8/21/07, Pekka Laukkanen <pe...@ik...> wrote:
> > > > > 2007/8/21, Jake B < ota...@gm...>:
> > > > > > I was wondering if there
> > > > > > were any other function that could retrieve an object's public
> methods
> > > and
> > > > > > other constructs.
> > > > >
> > > > > You probably already know about it but simply using dir(object)
> gives
> > > > > you list of all the object's attributes. If you are only
> interested
> > > > > about methods, relatively simple code like below can help.
> > > > >
> > > > > >>> from java.lang import String
> > > > > >>> from types import MethodType
> > > > > >>> s = String('')
> > > > > >>> for a in [a for a in dir(s) if type(getattr(s, a)) is
> MethodType ]:
> > > > > ...     print a
> > > > >
> > > > >
> > > > > Cheers,
> > > > >     .peke
> > > > >
> > > >
> > > >
> > >
> > >
> > >
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