Feature 1319 no pickle

[dwfncar]

Pull Request Testing

The branch now how temporary pickle files replaced by NetCDF for the dataplane and ASCII for the ascii2nc python handler.
MPR pickle replacement will be encapsulated in a separate issue.
Note: This version is a temporary solution that will be superseded by the Python3_Module refactorization when complete.

• Describe testing already performed for these changes:
  

• Recommend testing for the reviewer(s) to perform, including the location of input datasets, and any additional instructions:
  
  Run python unit tests.

• Do these changes include sufficient documentation and testing updates? [Yes or No]
  No.

• Will this PR result in changes to the test suite? [Yes or No]
  
  If yes, describe the new output and/or changes to the existing output:
  
  No.

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[JohnHalleyGotway]

David, I tried running unit_python.xml using these changes and almost got through all of them. However, I'm getting a runtime error on my Mac laptop. Perhaps it's version-specific?

Here's the 2nd to last command from those tests:

export MET_PYTHON_EXE='/usr/local/python3/bin/python3'
/Volumes/d1/projects/MET/MET_development/MET-python_pickle/met/share/met/../../bin/plot_data_plane \
      PYTHON_NUMPY \
      /Volumes/d1/projects/MET/MET_unit_test/MET_test_output/python/letter_pickle.ps \
      'name = "/Volumes/d1/projects/MET/MET_development/MET-python_pickle/met/share/met/python/read_ascii_numpy.py /Volumes/d1/projects/MET/MET_unit_test/MET_test_input/python/letter.txt LETTER";' \
      -plot_range 0.0 255.0 \
      -title "Python enabled plot_data_plane" \
      -v 1
unset MET_PYTHON_EXE

Here's the error I get:

ERROR  : 
ERROR  : tmp_nc_dataplane() -> command "/opt/local/bin/python3 /Volumes/d1/projects/MET/MET_development/MET-python_pickle/met/share/met/wrappers/write_tmp_dataplane.py /tmp/tmp_met_nc_36779_0 /Volumes/d1/projects/MET/MET_development/MET-python_pickle/met/share/met/python/read_ascii_numpy /Volumes/d1/projects/MET/MET_unit_test/MET_test_input/python/letter.txt LETTER" failed ... status = 256
ERROR  : 

And re-running that single python command manually, I get:

/opt/local/bin/python3 /Volumes/d1/projects/MET/MET_development/MET-python_pickle/met/share/met/wrappers/write_tmp_dataplane.py /tmp/tmp_met_nc_36779_0 /Volumes/d1/projects/MET/MET_development/MET-python_pickle/met/share/met/python/read_ascii_numpy /Volumes/d1/projects/MET/MET_unit_test/MET_test_input/python/letter.txt LETTER

Traceback (most recent call last):
  File "/Volumes/d1/projects/MET/MET_development/MET-python_pickle/met/share/met/wrappers/write_tmp_dataplane.py", line 59, in <module>
    setattr(ds, attr, attr_val)
  File "netCDF4/_netCDF4.pyx", line 2957, in netCDF4._netCDF4.Dataset.__setattr__
AttributeError: 'name' is one of the reserved attributes ('_grpid', '_grp', '_varid', 'groups', 'dimensions', 'variables', 'dtype', 'data_model', 'disk_format', '_nunlimdim', 'path', 'parent', 'ndim', 'mask', 'scale', 'cmptypes', 'vltypes', 'enumtypes', '_isprimitive', 'file_format', '_isvlen', '_isenum', '_iscompound', '_cmptype', '_vltype', '_enumtype', 'name', '__orthogoral_indexing__', 'keepweakref', '_has_lsd', '_buffer', 'chartostring', '_use_get_vars', '_ncstring_attrs__'), cannot rebind. Use setncattr instead.

Looks like a complaint about "name" being a reserved word. Please let me know if there's something else you'd like me to test.

[dwfncar]

Change _name in tmp netcdf file to name_str.
This is done in write_tmp_netcdf.py and read_tmp_netcdf.py wrappers.
Be sure to check the installed versions of these scripts to be sure they are treating the name attribute as special.