[Paraview] [EXTERNAL] Re: python scripting

Fri Mar 22 21:40:42 EDT 2013

Man, have I had that problem before.  What I did, which finally solved it, on Linux, was the following - both at build time and run time:

*         printenv | egrep PY. Then, take anything that sets up python and delete it.

*         setenv PATH path-to-your-python-executable:$PATH  (be sure to put your path before the $PATH).

*         setenv PYTHONPATH path-to-your-python-builds-modules, usually in lib/python-2.6 or somesuch.

I think that is correct - my problem build is on a computer that I can't get at this second.

Test with:
which python
Then run ParaView, and run Tools/ Python Shell.  Type 'import os', then 'os'.  It should tell you where your modules are coming from.

I am sure the Pyton gurus on the list could do better, but there are some ideas.

Alan

From: paraview-bounces at paraview.org [mailto:paraview-bounces at paraview.org] On Behalf Of Chukwudi Chukwudozie
Sent: Friday, March 22, 2013 8:55 AM
To: Pat Marion
Cc: paraview at paraview.org
Subject: [EXTERNAL] Re: [Paraview] python scripting

I just realized that paraview is using a different python (2.5) on my system than the default one (2.7) which has numpy. Also, the paraview I got is a compiled binary of 3.14. How do I go about pointing paraview to python2.7.

Also, form running the saved trace using python, it looks like it cannot load some of the paraview modules even though I can see them in the paraview directory. Any help?

Regards
On Fri, Mar 22, 2013 at 12:17 AM, Chukwudi Chukwudozie <cchukw1 at tigers.lsu.edu<mailto:cchukw1 at tigers.lsu.edu>> wrote:
Hi,

So I got python2.7 working and I set all the variables correctly like you advised but I still get errors. When I try to run a saved trace using python, I get the following errors.

b8-8d-12-38-84-40:Python chukwudichukwudozie$ python trace.py
Traceback (most recent call last):
  File "trace.py", line 2, in <module>
    except: from paraview.simple import *
  File "/Applications/ParaView.app/Contents/Python/paraview/simple.py", line 39, in <module>
    import servermanager
  File "/Applications/ParaView.app/Contents/Python/paraview/servermanager.py", line 43, in <module>
    import paraview, re, os, os.path, new, sys, vtk
  File "/Applications/ParaView.app/Contents/Python/paraview/vtk/__init__.py", line 1, in <module>
    from vtkCommonPython import *
ImportError: dlopen(/Applications/ParaView.app/Contents/Libraries/vtkCommonPython.so, 2): Library not loaded: @executable_path/../Libraries/libvtkCommonPythonD.pv3.14.dylib
  Referenced from: /Applications/ParaView.app/Contents/Libraries/vtkCommonPython.so
  Reason: image not found

Also, when I try to use pvpython to run a simple script to plot graph, I get the error message below

b8-8d-12-38-84-40:Python chukwudichukwudozie$ pvpython plot.py
Traceback (most recent call last):
  File "plot.py", line 2, in <module>
    import numpy as np
  File "/System/Library/Frameworks/Python.framework/Versions/2.5/Extras/lib/python/numpy/__init__.py", line 130, in <module>
    import add_newdocs
  File "/System/Library/Frameworks/Python.framework/Versions/2.5/Extras/lib/python/numpy/add_newdocs.py", line 9, in <module>
    from lib import add_newdoc
  File "/System/Library/Frameworks/Python.framework/Versions/2.5/Extras/lib/python/numpy/lib/__init__.py", line 152, in <module>
    from type_check import *
  File "/System/Library/Frameworks/Python.framework/Versions/2.5/Extras/lib/python/numpy/lib/type_check.py", line 8, in <module>
    import numpy.core.numeric as _nx
  File "/System/Library/Frameworks/Python.framework/Versions/2.5/Extras/lib/python/numpy/core/__init__.py", line 5, in <module>
    import multiarray
ImportError: dlopen(/System/Library/Frameworks/Python.framework/Versions/2.5/Extras/lib/python/numpy/core/multiarray.so, 2): no suitable image found.  Did find:
/System/Library/Frameworks/Python.framework/Versions/2.5/Extras/lib/python/numpy/core/multiarray.so: mach-o, but wrong architecture

Thanks.

On Sun, Mar 17, 2013 at 6:43 PM, Pat Marion <pat.marion at kitware.com<mailto:pat.marion at kitware.com>> wrote:
For PYTHONPATH, try removing the last /paraview components from the path, so you're setting:   /Applications/ParaView.app/Contents/Python

Also add /Applications/ParaView.app/Contents/Libraries to PYTHONPATH and DYLD_LIBRARY_PATH.  Note, that is DYLD not LD.  You don't need to add the Contents/bin directory to DYLD_LIBRARY_PATH, and you don't need to add DYLD_LIBRARY_PATH to PATH, and you don't need to add PYTHONPATH to PATH.

In summary, ParaView uses both pure python modules and c extension modules.  The pure python modules are in Contents/Python, and the c extension modules are in Contents/Libraries.  Both these paths should be on PYTHONPATH (or append sys.path at the top of your main script).  The c extenion modules have dependencies on dynamic libraries which are located in Contents/Libraries, so Contents/Libraries this needs to be in the DYLD_LIBRARY_PATH.

Pat

On Sat, Mar 16, 2013 at 12:58 PM, Chukwudi Chukwudozie <cchukw1 at tigers.lsu.edu<mailto:cchukw1 at tigers.lsu.edu>> wrote:
Hi,

I want help to be able to do the following two things using my mac OS X 10.7.5 but I have not been successful.

1. Run a paraview python script on terminal using pvpython.
2. Run the same script on terminal using python.

For (1) above, I saved the trace for a particular operation and ran it using pvpython and it worked. However, I got a paraview python scripts (newscript.py) on the internet and when I try to run them on my terminal using pvpython, it aborts with the error below.

Traceback (most recent call last):
  File "newscript.py", line 3, in <module>
    Connect()
  File "/Applications/ParaView.app/Contents/Python/paraview/servermanager.py", line 1932, in Connect
    connection = Connection(id, session)
  File "/Applications/ParaView.app/Contents/Python/paraview/servermanager.py", line 1806, in __init__
    raise RuntimeError, "Concurrent connections not supported!"
RuntimeError: Concurrent connections not supported!

For (2) above, I tried to run on my terminal using system python, the saved trace (newparaview.py) that was successful with pvpython and it keeps aborting with the following error messages

Traceback (most recent call last):
  File "newparaview.py", line 2, in <module>
    from paraview.servermanager import *
ImportError: No module named paraview.servermanager

My .bash_profile file looks like this.

export LD_LIBRARY_PATH=/Applications/ParaView.app/Contents/bin
export PATH=$PATH:${LD_LIBRARY_PATH}

export PYTHONPATH=$PYTHONPATH:/Applications/ParaView.app/Contents/Python/paraview:/Applications/ParaView.app/Contents/bin
export PATH=$PATH:{$PYTHONPATH}

# Setting PATH for EPD_free-7.2-2
# The orginal version is saved in .bash_profile.pysave
PATH="/Library/Frameworks/Python.framework/Versions/Current/bin:${PATH}"
export PATH

Regards,

--
Chukwudi Chukwudozie
cchukw1 at tigers.lsu.edu<mailto:cchukw1 at tigers.lsu.edu>
Craft and Hawkins Department of Petroleum Engineering
Louisiana State University
Patrick F. Taylor Hall (CEBA)
Room 3429
Baton Rouge LA, 70803
Cell:3373546822<tel:3373546822>
Office: 2255786064<tel:2255786064>

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--
Chukwudi Chukwudozie
cchukw1 at tigers.lsu.edu<mailto:cchukw1 at tigers.lsu.edu>
Craft and Hawkins Department of Petroleum Engineering
Louisiana State University
Patrick F. Taylor Hall (CEBA)
Room 3429
Baton Rouge LA, 70803
Cell:3373546822<tel:3373546822>
Office: 2255786064<tel:2255786064>

--
Chukwudi Chukwudozie
cchukw1 at tigers.lsu.edu<mailto:cchukw1 at tigers.lsu.edu>
Craft and Hawkins Department of Petroleum Engineering
Louisiana State University
Patrick F. Taylor Hall (CEBA)
Room 3429
Baton Rouge LA, 70803
Cell:3373546822
Office: 2255786064
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