[x3d-public] Fwd: Next, in Python news...

John Carlson yottzumm at gmail.com
Wed Aug 25 13:18:31 PDT 2021 

Downloaded:

AllenStandShootRifleM24.py

From:

https://www.web3d.org/x3d/content/examples/HumanoidAnimation/Prototypes/AllenStandShootRifleM24Index.html

Results:

coderextreme at coderextreme-Kubuntu20:~/Downloads$ python3 
AllenStandShootRifleM24.py
Traceback (most recent call last):
   File "AllenStandShootRifleM24.py", line 21, in <module>
     from x3d import *
AttributeError: module 'x3d' has no attribute 'SFBool'


coderextreme at coderextreme-Kubuntu20:~/Downloads$ source 
~/X3DJSONLD/src/main/python/venv/bin/activate


(venv) coderextreme at coderextreme-Kubuntu20:~/Downloads$ python3 
AllenStandShootRifleM24.py Traceback (most recent call last):
   File "AllenStandShootRifleM24.py", line 21, in <module>
     from x3d import *
AttributeError: module 'x3d' has no attribute 'SFBool'


(venv) coderextreme at coderextreme-Kubuntu20:~/Downloads$ export 
PYTHONPATH=~/X3DJSONLD/src/main/python/net/x3djsonld/data/


(venv) coderextreme at coderextreme-Kubuntu20:~/Downloads$ python3 
AllenStandShootRifleM24.py x3d.py package loaded, have fun with X3D 
Graphics!
Traceback (most recent call last):
   File "AllenStandShootRifleM24.py", line 44, in <module>
     ProtoDeclare(name='LOA1_ShootAnimation',
   File 
"/home/coderextreme/X3DJSONLD/src/main/python/net/x3djsonld/data/x3d.py", 
line 10239, in __init__
     self.ProtoBody = ProtoBody
   File 
"/home/coderextreme/X3DJSONLD/src/main/python/net/x3djsonld/data/x3d.py", 
line 10282, in ProtoBody
     if not ProtoBody is None and not 
isinstance(ProtoBody,(ProtoBody,ProtoInstance)):
TypeError: isinstance() arg 2 must be a type or tuple of types


Look at:


File 
"/home/coderextreme/X3DJSONLD/src/main/python/net/x3djsonld/data/x3d.py", 
line 10282, in ProtoBody
     if not ProtoBody is None and not 
isinstance(ProtoBody,(ProtoBody,ProtoInstance)):


It seems obvious to me that there's an issue with this line, but I don't 
really know Python too well!

Please bring up a virtual environment or otherwise provide better 
instructions for patching the issue.


John

On 8/25/21 1:33 AM, John Carlson wrote:
>
> This is a repeat.  I only saw ProtoBody setter isinstance error when 
> running python generated from the X3D archives from sourceforge.
>
> If you like, I can download a python file from the website? Okay!
>
> On 8/24/21 10:41 PM, Brutzman, Donald (Don) (CIV) wrote:
>>
>> John, we have a lot of simple prototypes and prototypes with embedded 
>> Script nodes in the archives that have all tested OK.
>>
>> If your example is that Rubiks’s cube with nested prototypes, that is 
>> harder.  We believe the spec is OK but that feature is only 
>> occasionally demonstrated as working.  Any model with nested 
>> prototypes (ProtoDeclare within ProtoDeclare) can be easily 
>> refactored by putting all of the ProtoDeclare blocks first.  
>> Similarly it makes sense to test individual ProtoInstance nodes 
>> without feeding them nested ProtoInstance fields.
>>
>> Looking at existing examples is also good because they have passed 
>> through validation.  Step by step.
>>
>>   * https://www.web3d.org/x3d/content/examples/X3dResources.html#Examples
>>     <https://www.web3d.org/x3d/content/examples/X3dResources.html#Examples>
>>
>> Once again sorry I can’t pursue “deep dive” excursions at this time.  
>> Am working on (a) X3D architecture Mantis editorial issues, (b) DIS 
>> protocol implementation open-dis7-java, upgraded DIS support in Xj3D, 
>> and just tonight got X3D-Edit building despite issues with a very old 
>> laptop.  Step  by step.
>>
>> *From:* x3d-public <x3d-public-bounces at web3d.org> *On Behalf Of *John 
>> Carlson
>> *Sent:* Tuesday, August 24, 2021 7:48 PM
>> *To:* Joseph D Williams <joedwil at earthlink.net>
>> *Cc:* X3D Graphics public mailing list <x3d-public at web3d.org>
>> *Subject:* Re: [x3d-public] Fwd: Next, in Python news...
>>
>> Yes, you need to ‘’’pip install x3d’’’
>>
>> before running the provided script in previous message.   See link 
>> previously posted by Joe.
>>
>> Thanks for confirmation of received message.
>>
>> The header is the top of the file.   If you don’t want to run my 
>> code, convert your own proto xml to python using X3dToPython.xslt.   
>> I don’t have a JSON converter for this test.
>>
>> The main purpose is to get proper implementation of Protos in pure 
>> python.   I’m guessing it may be a wider problem with x3d.py, because 
>> when I patched Protos in my version, there were further issues.   So 
>> simply patching Protos won’t fix all the issues.   A full roundtrip 
>> XML -> python -> XML needs to be done for the archive.
>>
>> I’ve freed up some time to work on python, and I plan to start work 
>> on a test suite soon.   It would be good to get past my initial 
>> issues with the package.   I can reattempt to modify the x3d package 
>> generator, but that doesn’t mean my patches will be available when I 
>> am done.    It still needs to go through official channels.
>>
>> If you’re fed up with stylesheets, I can offer a solution, but it’s 
>> not as elegant or pythonic and uses Java.   As far as I can tell, 
>> XSLT is the declarative transformer of choice for XML.
>>
>> The main thing I think needs to be done is handle cases where 
>> parameters and classes have the same case sensitive name.
>>
>> If people want to contribute to x3d.py project, now’s your chance.   
>> I’m fairly sure the python binding needs to be standardized.
>>
>> I know pretty much everyone has been covidized.
>>
>> After spinning up python, I’ll return to C++ if there’s enough code 
>> separated from the standard.
>>
>> John
>>
>> On Tue, Aug 24, 2021 at 8:55 PM Joseph D Williams 
>> <joedwil at earthlink.net <mailto:joedwil at earthlink.net>> wrote:
>>
>>     # Now available: developmental python x3d.py package on PyPi for
>>     import.
>>
>>     # This approach greatly simplifies Python X3D deployment and use.
>>
>>     # https://pypi.org/project/x3d
>>     <https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpypi.org%2Fproject%2Fx3d&data=04%7C01%7Cbrutzman%40nps.edu%7C72693df0fce44ec3ba3408d96772eba5%7C6d936231a51740ea9199f7578963378e%7C0%7C0%7C637654565985912019%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=Sw68kSJJKNZaBcGFk4Up3toP5CkFxSgiUQASR49Cfos%3D&reserved=0>
>>
>>     The text got here as attachment
>>
>>     Joe
>>
>>     *From: *John Carlson <mailto:yottzumm at gmail.com>
>>     *Sent: *Tuesday, August 24, 2021 3:00 PM
>>     *To: *Don Brutzman <mailto:brutzman at nps.edu>; X3D Graphics public
>>     mailing list <mailto:x3d-public at web3d.org>
>>     *Subject: *[x3d-public] Fwd: Next, in Python news...
>>
>>     Resend of non-working python code.   No rush,    I don’t want
>>     anyone to be surprised.  I do want someone to confirm receipt of
>>     email.   I’m guessing things are going to spam?
>>
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