[Scons-users] Creating a class in a SConscript

[Bill Deegan]

how about a zip file or a tar gzip? Make it easier on us..

On Thu, May 4, 2017 at 3:48 PM, Dynastic Space <dynasticspace at gmail.com>
wrote:

> Attaching files here.
>
> I obfuscated my directory structure, but I am sure you can reconstitute
> it. In the 'project' directory there is an empty __init__.py file just to
> satisfy python. gmail does not let me attach it here.
>
> The output I get is:
>
>  scons
> scons: Reading SConscript files ...
> isinstance(d, B) = True
> PrintIsInstance called from SConstruct, type <class 'SCons.Script.D'>,
> isinstance: True, hierarchy (<class 'SCons.Script.D'>, <class
> 'my_script.C'>, <class 'my_script.B'>, <class 'my_script.A'>, <type
> 'object'>)
> PrintIsInstance called from SConstruct, type <class 'SCons.Script.D'>,
> isinstance: False, hierarchy (<class 'SCons.Script.D'>, <class
> 'my_script.C'>, <class 'my_script.B'>, <class 'my_script.A'>, <type
> 'object'>)
> scons: done reading SConscript files.
> scons: Building targets ...
> scons: `.' is up to date.
> scons: done building targets.
>
> Thanks for the quick response.
>
> Howling
>
>
> On Thu, May 4, 2017 at 10:14 PM, Bill Deegan <bill at baddogconsulting.com>
> wrote:
>
>> Can you provide a small complete example? (A SConstruct which demonstrate
>> this?)
>>
>> On Thu, May 4, 2017 at 3:05 PM, Dynastic Space <dynasticspace at gmail.com>
>> wrote:
>>
>>> I have a python script defining a hierarchy of classes. This script is
>>> not part of the scons environment.
>>>
>>> In a SConscript file I derive from one of the classes defined in my
>>> script.
>>>
>>> I store an instance of the new class in the environment, to access it
>>> later in my script.
>>> However, when I use isinstance(instance, MyParentClass) it returns False.
>>>
>>> See the following print:
>>> binary: app type: <class 'SCons.Script.MyAppBinaryDesc'> instance of
>>> AppBinaryDesc: False hierarchy: (<class 'SCons.Script.MyBinaryDesc'>,
>>> <class 'binary_descriptor.SPAppBinaryDesc'>, <class
>>> 'binary_descriptor.AppBinaryDesc'>, <class
>>> 'binary_descriptor.BuildableDesc'>, <class
>>> 'binary_descriptor.BinaryDesc'>, <type 'object'>)
>>>
>>> The instantiated object is app.
>>> The class that was instantiated in my SConscript is MyAppBinaryDesc.
>>> I use isinstance(app, AppBinaryDesc) which returns False.
>>>
>>> I expect it to return 'True', as the hierarchy clearly shows
>>> MyAppBinaryDesc inheriting from AppBinaryDesc.
>>>
>>> I tried importing SCons.Script in my script, but that did not help.
>>>
>>> Thanks,
>>>
>>> Howling
>>>
>>> _______________________________________________
>>> Scons-users mailing list
>>> Scons-users at scons.org
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>>>
>>>
>>
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>
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