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

[Don C. <dco...@ch...>]

I think this is "normal"

inspect.getmembers is calling getattr on attributes that are not readable

from javax.swing import JFrame
from java.awt import IllegalComponentStateException

frame = JFrame()

for key in dir(frame):
    try:
        getattr(frame, key)
        print key
    except (TypeError, AttributeError, IllegalComponentStateException), e:
        print "%s [NOT READABLE %s]" % (key, e.__class__)


On 8/23/07, Jake B <ota...@gm...> wrote:
> 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