Feature 1747 pylonglong (#1748)

* Per #1747, update MET to interpret longlong values as integers. NetCDF file attributes that have an LL suffix are read into python as numpy.int64 objects. Right now MET fails when trying to read those as integers. Update the parsing logic to interpret those as ints.

* Per #1747, since MET can now interpret both long and longlong's as ints, there's no need to cast nx and ny to ints in the read_tmp_dataplane.py script anymore.

* Per #1747, this is slightly unrelated. But after installing the netCDF4 module on kiowa for /usr/local/met-python3/bin/python3, we should no longer need a custom PATH setting to get unit_python.xml to work. Reverting the change I made to it a couple of days ago to get it working.

met/data/wrappers/read_tmp_dataplane.py

@@ -27,7 +27,6 @@
         grid[grid_attr] = attr_val
     else:
         met_attrs[attr] = attr_val
-grid['nx'], grid['ny'] = int(grid['nx']), int(grid['ny'])
 met_attrs['grid'] = grid
 met_attrs['name'] = met_attrs['name_str']
 del met_attrs['name_str']

met/src/libcode/vx_python3_utils/python3_dict.cc

@@ -164,6 +164,14 @@ if ( ! a )  {
 
 }
 
+// If not a Long, try interpreting as LongLong for numpy.int64 values
+
+if ( ! PyLong_Check(a) )  {
+
+   a = PyLong_FromLongLong(PyLong_AsLongLong(a));
+
+}
+
 if ( ! PyLong_Check(a) )  {
 
    mlog << Error << "\nPython3_Dict::lookup_int(const char *) -> "

test/xml/unit_python.xml

@@ -7,7 +7,6 @@
   <!ENTITY INPUT_DIR      "${MET_TEST_INPUT}">
   <!ENTITY OUTPUT_DIR     "${MET_TEST_OUTPUT}">
   <!ENTITY MET_PYTHON_EXE "/usr/local/python3/bin/python3">
-  <!ENTITY ANACONDA_BIN   "/usr/local/anaconda3-20190923/bin">
 
   <!ENTITY CONFIG_DIR      "&TEST_DIR;/config">
   <!ENTITY DATA_DIR_PYTHON "&INPUT_DIR;/python">
@@ -392,8 +391,7 @@
 
   <!-- Invokes Python pickle logic to read NUMPY text data -->
   <test name="python_numpy_plot_data_plane_pickle">
-    <exec>export PATH='&ANACONDA_BIN;:${PATH}'; \
-          &MET_BIN;/plot_data_plane</exec>
+    <exec>&MET_BIN;/plot_data_plane</exec>
     <env>
        <pair><name>MET_PYTHON_EXE</name> <value>&MET_PYTHON_EXE;</value></pair>
     </env>