Re: [Jython-users] Works in cpython, __import__ and more package names

[Berlin Brown <berlin.brown@gm...>]

Sorry about all that and thanks, I think that will be useful incase
people dont read docs.

On 10/19/05, Kent Johnson <kent37@...> wrote:
> Berlin Brown wrote:
> >>>>a =3D __import__('java.lang.String', {}, {}, [])
> >>>>print dir(a)
> >
> > ['__name__', 'applet', 'awt', 'beans', 'io', 'lang', 'math', 'net', 'ni=
o', 'rmi'
> > , 'security', 'sql', 'text', 'util']
> >
> >>>>a =3D __import__('java.lang', {}, {}, [])
> >>>>print dir(a)
> >
> > ['__name__', 'applet', 'awt', 'beans', 'io', 'lang', 'math', 'net', 'ni=
o', 'rmi'
> > , 'security', 'sql', 'text', 'util']
>
> As designed. From the Python docs:
>
> __import__(     name[, globals[, locals[, fromlist]]])
> <snip>
> When the name variable is of the form package.module, normally, the top-l=
evel package (the name up till the first dot) is returned, not the module n=
amed by name. However, when a non-empty fromlist argument is given, the mod=
ule named by name is returned. This is done for compatibility with the byte=
code generated for the different kinds of import statement; when using "imp=
ort spam.ham.eggs", the top-level package spam must be placed in the import=
ing namespace, but when using "from spam.ham import eggs", the spam.ham sub=
package must be used to find the eggs variable. As a workaround for this be=
havior, use getattr() to extract the desired components. For example, you c=
ould define the following helper:
>
> def my_import(name):
>     mod =3D __import__(name)
>     components =3D name.split('.')
>     for comp in components[1:]:
>         mod =3D getattr(mod, comp)
>     return mod
>
> Kent
>
> >
> >
> > On 10/19/05, Dipankar Das <ddas@...> wrote:
> >
> >>Start your JVM with -verbose option.
> >>I think you will see what happens when you use eval.
> >>
> >>--ddas
> >>
> >>-----Original Message-----
> >>From: jython-users-admin@...
> >>[mailto:jython-users-admin@...]On Behalf Of Berlin
> >>Brown
> >>Sent: Wednesday, October 19, 2005 3:35 AM
> >>Cc: jython-users@...
> >>Subject: Re: [Jython-users] Works in cpython, __import__ and more
> >>package names
> >>
> >>
> >>I am just going to use eval, that is the only that works, I dont know
> >>why people frown on the things that work.  All of the code didnt give
> >>me what I wanted.
> >>
> >>On 10/19/05, Berlin Brown <berlin.brown@...> wrote:
> >>
> >>>Hmm, that didnt return:
> >>>
> >>> a =3D __import__('java.lang.String', {},{}, [])
> >>>
> >>>On 10/19/05, Kent Johnson <kent37@...> wrote:
> >>>
> >>>>Berlin Brown wrote:
> >>>>
> >>>>>>>a =3D __import__("xml.dom.xmlbuilder", {}, {}, True)
> >>>>>>>print a
> >>>>>
> >>>>>
> >>>>>This code works in python but doesnt seem to work in jython22a0, is
> >>>>>there an equivalent to dynamically load classes and Files?
> >>>>
> >>>>__import__ works in Jython. The module xml.dom.xmlbuilder does not ex=
ist
> >>
> >>in Jython and the last argument to __import__ should be a list.
> >>
> >>>>>>>__import__('string', {}, {}, [])
> >>>>
> >>>><module 'string' from 'C:\Downloads\Java\jython-2.2a1\Lib\string.py'>
> >>>>
> >>>>Kent
> >>>>
> >>>>
> >>>
> >>
> >>-------------------------------------------------------
> >>This SF.Net email is sponsored by:
> >>Power Architecture Resource Center: Free content, downloads, discussion=
s,
> >>and more. http://solutions.newsforge.com/ibmarch.tmpl
> >>_______________________________________________
> >>Jython-users mailing list
> >>Jython-users@...
> >>https://lists.sourceforge.net/lists/listinfo/jython-users
> >>
> >>
> >
> >
> >
> > -------------------------------------------------------
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s,
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> > https://lists.sourceforge.net/lists/listinfo/jython-users
> >
> >
>
>
>
> -------------------------------------------------------
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>

Re: [Jython-users] Works in cpython, __import__ and more package names

[Kent Johnson <kent37@td...>]

Berlin Brown wrote:
>>>>a = __import__('java.lang.String', {}, {}, [])
>>>>print dir(a)
> 
> ['__name__', 'applet', 'awt', 'beans', 'io', 'lang', 'math', 'net', 'nio', 'rmi'
> , 'security', 'sql', 'text', 'util']
> 
>>>>a = __import__('java.lang', {}, {}, [])
>>>>print dir(a)
> 
> ['__name__', 'applet', 'awt', 'beans', 'io', 'lang', 'math', 'net', 'nio', 'rmi'
> , 'security', 'sql', 'text', 'util']

As designed. From the Python docs:

__import__(  	name[, globals[, locals[, fromlist]]])
<snip>
When the name variable is of the form package.module, normally, the top-level package (the name up till the first dot) is returned, not the module named by name. However, when a non-empty fromlist argument is given, the module named by name is returned. This is done for compatibility with the bytecode generated for the different kinds of import statement; when using "import spam.ham.eggs", the top-level package spam must be placed in the importing namespace, but when using "from spam.ham import eggs", the spam.ham subpackage must be used to find the eggs variable. As a workaround for this behavior, use getattr() to extract the desired components. For example, you could define the following helper:

def my_import(name):
    mod = __import__(name)
    components = name.split('.')
    for comp in components[1:]:
        mod = getattr(mod, comp)
    return mod

Kent

> 
> 
> On 10/19/05, Dipankar Das <ddas@...> wrote:
> 
>>Start your JVM with -verbose option.
>>I think you will see what happens when you use eval.
>>
>>--ddas
>>
>>-----Original Message-----
>>From: jython-users-admin@...
>>[mailto:jython-users-admin@...]On Behalf Of Berlin
>>Brown
>>Sent: Wednesday, October 19, 2005 3:35 AM
>>Cc: jython-users@...
>>Subject: Re: [Jython-users] Works in cpython, __import__ and more
>>package names
>>
>>
>>I am just going to use eval, that is the only that works, I dont know
>>why people frown on the things that work.  All of the code didnt give
>>me what I wanted.
>>
>>On 10/19/05, Berlin Brown <berlin.brown@...> wrote:
>>
>>>Hmm, that didnt return:
>>>
>>> a = __import__('java.lang.String', {},{}, [])
>>>
>>>On 10/19/05, Kent Johnson <kent37@...> wrote:
>>>
>>>>Berlin Brown wrote:
>>>>
>>>>>>>a = __import__("xml.dom.xmlbuilder", {}, {}, True)
>>>>>>>print a
>>>>>
>>>>>
>>>>>This code works in python but doesnt seem to work in jython22a0, is
>>>>>there an equivalent to dynamically load classes and Files?
>>>>
>>>>__import__ works in Jython. The module xml.dom.xmlbuilder does not exist
>>
>>in Jython and the last argument to __import__ should be a list.
>>
>>>>>>>__import__('string', {}, {}, [])
>>>>
>>>><module 'string' from 'C:\Downloads\Java\jython-2.2a1\Lib\string.py'>
>>>>
>>>>Kent
>>>>
>>>>
>>>
>>
>>-------------------------------------------------------
>>This SF.Net email is sponsored by:
>>Power Architecture Resource Center: Free content, downloads, discussions,
>>and more. http://solutions.newsforge.com/ibmarch.tmpl
>>_______________________________________________
>>Jython-users mailing list
>>Jython-users@...
>>https://lists.sourceforge.net/lists/listinfo/jython-users
>>
>>
> 
> 
> 
> -------------------------------------------------------
> This SF.Net email is sponsored by:
> Power Architecture Resource Center: Free content, downloads, discussions,
> and more. http://solutions.newsforge.com/ibmarch.tmpl
> _______________________________________________
> Jython-users mailing list
> Jython-users@...
> https://lists.sourceforge.net/lists/listinfo/jython-users
> 
> 

Re: [Jython-users] Works in cpython, __import__ and more package names

[Berlin Brown <berlin.brown@gm...>]

>>> a =3D __import__('java.lang.String', {}, {}, [])
>>> print dir(a)
['__name__', 'applet', 'awt', 'beans', 'io', 'lang', 'math', 'net', 'nio', =
'rmi'
, 'security', 'sql', 'text', 'util']
>>> a =3D __import__('java.lang', {}, {}, [])
>>> print dir(a)
['__name__', 'applet', 'awt', 'beans', 'io', 'lang', 'math', 'net', 'nio', =
'rmi'
, 'security', 'sql', 'text', 'util']
>>>

On 10/19/05, Dipankar Das <ddas@...> wrote:
> Start your JVM with -verbose option.
> I think you will see what happens when you use eval.
>
> --ddas
>
> -----Original Message-----
> From: jython-users-admin@...
> [mailto:jython-users-admin@...]On Behalf Of Berlin
> Brown
> Sent: Wednesday, October 19, 2005 3:35 AM
> Cc: jython-users@...
> Subject: Re: [Jython-users] Works in cpython, __import__ and more
> package names
>
>
> I am just going to use eval, that is the only that works, I dont know
> why people frown on the things that work.  All of the code didnt give
> me what I wanted.
>
> On 10/19/05, Berlin Brown <berlin.brown@...> wrote:
> > Hmm, that didnt return:
> >
> >  a =3D __import__('java.lang.String', {},{}, [])
> >
> > On 10/19/05, Kent Johnson <kent37@...> wrote:
> > > Berlin Brown wrote:
> > > >>>a =3D __import__("xml.dom.xmlbuilder", {}, {}, True)
> > > >>>print a
> > > >
> > > >
> > > > This code works in python but doesnt seem to work in jython22a0, is
> > > > there an equivalent to dynamically load classes and Files?
> > >
> > > __import__ works in Jython. The module xml.dom.xmlbuilder does not ex=
ist
> in Jython and the last argument to __import__ should be a list.
> > >
> > > >>> __import__('string', {}, {}, [])
> > > <module 'string' from 'C:\Downloads\Java\jython-2.2a1\Lib\string.py'>
> > >
> > > Kent
> > >
> > >
> >
>
>
> -------------------------------------------------------
> This SF.Net email is sponsored by:
> Power Architecture Resource Center: Free content, downloads, discussions,
> and more. http://solutions.newsforge.com/ibmarch.tmpl
> _______________________________________________
> Jython-users mailing list
> Jython-users@...
> https://lists.sourceforge.net/lists/listinfo/jython-users
>
>

Re: [Jython-users] Works in cpython, __import__ and more package names

[Kent Johnson <kent37@td...>]

Berlin Brown wrote:
> I am just going to use eval, that is the only that works, I dont know
> why people frown on the things that work.  All of the code didnt give
> me what I wanted.

People frown on needlessly creating security holes. But suit yourself.

> 
> On 10/19/05, Berlin Brown <berlin.brown@...> wrote:
> 
>>Hmm, that didnt return:
>>
>> a = __import__('java.lang.String', {},{}, [])

Works for me. What version of Jython?

C:\Downloads\Java\jython-2.2a1>jython
Jython 2.2a1 on java1.4.2_06 (JIT: null)
Type "copyright", "credits" or "license" for more information.
>>> __import__('java.lang.String', {}, {}, [])
<java package java 1>

Kent

>>
>>On 10/19/05, Kent Johnson <kent37@...> wrote:
>>
>>>Berlin Brown wrote:
>>>
>>>>>>a = __import__("xml.dom.xmlbuilder", {}, {}, True)
>>>>>>print a
>>>>
>>>>
>>>>This code works in python but doesnt seem to work in jython22a0, is
>>>>there an equivalent to dynamically load classes and Files?
>>>
>>>__import__ works in Jython. The module xml.dom.xmlbuilder does not exist in Jython and the last argument to __import__ should be a list.
>>>
>>>
>>>>>>__import__('string', {}, {}, [])
>>>
>>><module 'string' from 'C:\Downloads\Java\jython-2.2a1\Lib\string.py'>
>>>
>>>Kent
>>>
>>>
>>
> 
> 
> -------------------------------------------------------
> This SF.Net email is sponsored by:
> Power Architecture Resource Center: Free content, downloads, discussions,
> and more. http://solutions.newsforge.com/ibmarch.tmpl
> _______________________________________________
> Jython-users mailing list
> Jython-users@...
> https://lists.sourceforge.net/lists/listinfo/jython-users
> 
> 

Re: [Jython-users] Works in cpython, __import__ and more package names

[Berlin Brown <berlin.brown@gm...>]

I am just going to use eval, that is the only that works, I dont know
why people frown on the things that work.  All of the code didnt give
me what I wanted.

On 10/19/05, Berlin Brown <berlin.brown@...> wrote:
> Hmm, that didnt return:
>
>  a =3D __import__('java.lang.String', {},{}, [])
>
> On 10/19/05, Kent Johnson <kent37@...> wrote:
> > Berlin Brown wrote:
> > >>>a =3D __import__("xml.dom.xmlbuilder", {}, {}, True)
> > >>>print a
> > >
> > >
> > > This code works in python but doesnt seem to work in jython22a0, is
> > > there an equivalent to dynamically load classes and Files?
> >
> > __import__ works in Jython. The module xml.dom.xmlbuilder does not exis=
t in Jython and the last argument to __import__ should be a list.
> >
> > >>> __import__('string', {}, {}, [])
> > <module 'string' from 'C:\Downloads\Java\jython-2.2a1\Lib\string.py'>
> >
> > Kent
> >
> >
>

Re: [Jython-users] Works in cpython, __import__ and more package names

[Berlin Brown <berlin.brown@gm...>]

Hmm, that didnt return:

 a =3D __import__('java.lang.String', {},{}, [])

On 10/19/05, Kent Johnson <kent37@...> wrote:
> Berlin Brown wrote:
> >>>a =3D __import__("xml.dom.xmlbuilder", {}, {}, True)
> >>>print a
> >
> >
> > This code works in python but doesnt seem to work in jython22a0, is
> > there an equivalent to dynamically load classes and Files?
>
> __import__ works in Jython. The module xml.dom.xmlbuilder does not exist =
in Jython and the last argument to __import__ should be a list.
>
> >>> __import__('string', {}, {}, [])
> <module 'string' from 'C:\Downloads\Java\jython-2.2a1\Lib\string.py'>
>
> Kent
>
>

Re: [Jython-users] Works in cpython, __import__ and more package names

[Kent Johnson <kent37@td...>]

Berlin Brown wrote:
>>>a = __import__("xml.dom.xmlbuilder", {}, {}, True)
>>>print a
> 
> 
> This code works in python but doesnt seem to work in jython22a0, is
> there an equivalent to dynamically load classes and Files?

__import__ works in Jython. The module xml.dom.xmlbuilder does not exist in Jython and the last argument to __import__ should be a list.

>>> __import__('string', {}, {}, [])
<module 'string' from 'C:\Downloads\Java\jython-2.2a1\Lib\string.py'>

Kent

[Jython-users] Works in cpython, __import__ and more package names

[Berlin Brown <berlin.brown@gm...>]

>> a =3D __import__("xml.dom.xmlbuilder", {}, {}, True)
>> print a

This code works in python but doesnt seem to work in jython22a0, is
there an equivalent to dynamically load classes and Files?

without using eval.