Bugfix 1798 main_v10.0 py_grid_string

[JohnHalleyGotway]

Pull Request Testing

• Describe testing already performed for these changes:
  
  Manually tested and confirmed that these changes enable python embedding to work in this case.

• Recommend testing for the reviewer(s) to perform, including the location of input datasets, and any additional instructions:
  
  Replicate the problem described in issue Fix python embedding when using a named grid with MET_PYTHON_EXE set. #1798 and confirm that these changes fix the problem.

• Do these changes include sufficient documentation updates, ensuring that no errors or warnings exist in the build of the documentation? [Yes]
  No doc updates required for this bugfix.

• Do these changes include sufficient testing updates? [Yes]
  I made no updates to tests on the main_v10.0 branch but will update them on the develop branch.

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

• Please complete this pull request review by [5/21/21].
  

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[jprestop]

I replicated the problem described in issue #1798 and confirm that these changes fix the problem, and I approve this request.

First ran without MET_PYTHON_EXE set and got a successful run:

/usr/local/met-10.0.0/bin/plot_data_plane PYTHON_NUMPY plot.ps 'name="read_ascii_numpy_named_grid.py data/python/fcst.txt FCST";'
DEBUG 1: Opening data file: PYTHON_NUMPY
Python Script:	'read_ascii_numpy_named_grid.py'
Input File:	'data/python/fcst.txt'
Data Name:	'FCST'
Data Shape:	(129, 185)
Data Type:	dtype('float64')
Attributes:	{'valid': '20050807_120000', 'init': '20050807_000000', 'lead': '120000', 'accum': '120000', 'name': 'FCST', 'long_name': 'FCST_word', 'level': 'Surface', 'units': 'None', 'grid': 'G212'}
DEBUG 1: Creating postscript file: plot.ps

Then set MET_PYTHON_EXE and ran again and did not get a successful run:

setenv MET_PYTHON_EXE `which python3`
/usr/local/met-10.0.0/bin/plot_data_plane PYTHON_NUMPY plot.ps 'name="read_ascii_numpy_named_grid.py data/python/fcst.txt FCST";'
DEBUG 1: Opening data file: PYTHON_NUMPY
Python Script:	'/usr/local/met-10.0.0/share/met/wrappers/write_tmp_dataplane.py'
User Command:	'read_ascii_numpy_named_grid data/python/fcst.txt FCST'
Temporary File:	'/tmp/tmp_met_nc_39904_0'
Python Script:	'read_ascii_numpy_named_grid'
Input File:	'data/python/fcst.txt'
Data Name:	'FCST'
Data Shape:	(129, 185)
Data Type:	dtype('float64')
Attributes:	{'valid': '20050807_120000', 'init': '20050807_000000', 'lead': '120000', 'accum': '120000', 'name': 'FCST', 'long_name': 'FCST_word', 'level': 'Surface', 'units': 'None', 'grid': 'G212'}
Traceback (most recent call last):
  File "/usr/local/met-10.0.0/share/met/wrappers/read_tmp_dataplane.py", line 23, in <module>
    grid_attr = attr.split('.')[1]
IndexError: list index out of range
WARNING: 
WARNING: tmp_nc_dataplane() -> an error occurred importing module "read_tmp_dataplane"
WARNING: 
ERROR  : 
ERROR  : plot_data_plane -> trouble getting field "name="read_ascii_numpy_named_grid.py data/python/fcst.txt FCST";" from file "PYTHON_NUMPY"
ERROR  : 

Then, using the new code, I reran with MET_PYTHON_EXE set and saw the problem was resolved:

/d1/projects/MET/MET_pull_requests/met-10.0.1/bugfix_1798/MET-bugfix_1798_main_v10.0_py_grid_string_into_main_v10.0/met/bin/plot_data_plane PYTHON_NUMPY plot.ps 'name="read_ascii_numpy_named_grid.py data/python/fcst.txt FCST";'
DEBUG 1: Opening data file: PYTHON_NUMPY
Python Script:	'/d1/projects/MET/MET_pull_requests/met-10.0.1/bugfix_1798/MET-bugfix_1798_main_v10.0_py_grid_string_into_main_v10.0/met/share/met/wrappers/write_tmp_dataplane.py'
User Command:	'read_ascii_numpy_named_grid data/python/fcst.txt FCST'
Temporary File:	'/tmp/tmp_met_nc_40024_0'
Python Script:	'read_ascii_numpy_named_grid'
Input File:	'data/python/fcst.txt'
Data Name:	'FCST'
Data Shape:	(129, 185)
Data Type:	dtype('float64')
Attributes:	{'valid': '20050807_120000', 'init': '20050807_000000', 'lead': '120000', 'accum': '120000', 'name': 'FCST', 'long_name': 'FCST_word', 'level': 'Surface', 'units': 'None', 'grid': 'G212'}
DEBUG 1: Creating postscript file: plot.ps