[Paraview] problems using pvbatch in frozen build

[Burlen Loring]

certainly seems like a bug worth fixing. let me know if you want me to 
start a bug report.

On 07/08/2016 01:19 PM, Burlen Loring wrote:
> Thanks Utakarsh. It sounds like it may be possible to work around the 
> issue by not importing the lookuptable module from simple. However,  
> it's "import math" that fails, and math seems like a fairly basic 
> module that should always be present. Is there any chance it got left 
> out of some packaging manifest used in the freeze process? having it 
> be available might be a better solution.
>
> On 07/08/2016 08:38 AM, Utkarsh Ayachit wrote:
>> I got over such problems by delaying importing of those modules until 
>> needed. They are not needed for most common use-cases.
>>
>> See:
>> https://gitlab.kitware.com/paraview/paraview/commit/3af48fffd924bf5ffd11f576a261ef4eb3ff5897
>>
>> On Tue, Jul 5, 2016 at 2:35 PM, Burlen Loring <bloring at lbl.gov 
>> <mailto:bloring at lbl.gov>> wrote:
>>
>>     Hi All,
>>
>>     I'm encountering some issues when trying to use pvbatch from a
>>     frozen build(PARAVIEW_FREEZE_PYTHON=ON). Seems that certain key
>>     python modules are missing.ie <http://missing.ie> math. However,
>>     I can use Python shell feature in the GUI from the same build. Do
>>     we have any idea about what may be wrong with pvbatch?
>>
>>
>>     here is output from a simple test:
>>
>>         nid00048:~$pvbatch pvbatch-test.py
>>         started
>>         Traceback (most recent call last):
>>           File "pvbatch-test.py", line 3, in <module>
>>             from paraview.simple import *
>>           File
>>         "/usr/common/graphics/ParaView/builds/PV-4.4.0/lib/site-packages/paraview/simple.py",
>>         line 40, in <module>
>>             import lookuptable
>>           File
>>         "/usr/common/graphics/ParaView/builds/PV-4.4.0/lib/site-packages/paraview/lookuptable.py",
>>         line 21, in <module>
>>             from math import sqrt
>>         ImportError: No module named math
>>
>>     I tried this as well:
>>
>>         nid00048:~$pvpython
>>         Python 2.7.9 (default, Jan  8 2015, 22:29:31)
>>         [GCC 4.9.1 20140716 (Cray Inc.)] on linux2
>>         Traceback (most recent call last):
>>           File "/etc/pythonstart", line 7, in <module>
>>             import readline
>>         ImportError: Excluded frozen object named readline
>>         >>> import math
>>         Traceback (most recent call last):
>>           File "<stdin>", line 1, in <module>
>>         ImportError: No module named math
>>         >>>
>>
>>     Thanks
>>     Burlen
>>
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