Add numBlob to the parameters for the ex_init_params method.

This was needed to initialize a new exodus file from inside of
exodus.py using the init_params argument of the exodus class.

Add a test to ensure this capability does not regress and that
ex_init_params works if new arguments need to be initalized in the
future.

Address the tests not running due to the test and exodus.py script
being placed in lib64. This still needs work to ensure it finds the
libexodus.so library because SEACAS_LIBDIR is left blank during the
CMake configure step.

packages/seacas/scripts/exodus3.in.py

@@ -164,13 +164,12 @@ class ex_options(Enum):
 if os.name == 'nt':
     so_prefix = ''
     so_suffix = 'dll'
+elif os.uname()[0] == 'Darwin':
+    so_prefix = 'lib'
+    so_suffix = 'dylib'
 else:
-    if os.uname()[0] == 'Darwin':
-        so_prefix = 'lib'
-        so_suffix = 'dylib'
-    else:
-        so_prefix = 'lib'
-        so_suffix = 'so'
+    so_prefix = 'lib'
+    so_suffix = 'so'
 pip_path = os.path.dirname(__file__)
 pip_so_path = os.path.join(pip_path, f"{so_prefix}exodus.{so_suffix}")
 try:
@@ -673,7 +672,7 @@ def __init__(self, file, mode=None, array_type='ctype', title=None,
 
 
         >>> ex_pars = ex_init_params(num_dim=numDims, num_nodes=numNodes,
-        ...                          num_elem=numElems, num_elem_blk=numElemBlocks, num_assembly=numAssembly)
+        ...                          num_elem=numElems, num_elem_blk=numElemBlocks, num_assembly=numAssembly, num_blob=numBlob)
         >>> exo = exodus(file_name, mode=mode, title=title,
         ...             array_type=array_type, init_params=ex_pars)
         >>> with exodus(file_name, mode=mode, title=title,\
@@ -729,7 +728,10 @@ def __init__(self, file, mode=None, array_type='ctype', title=None,
                     numElems = 0
                 if numBlocks is None:
                     numBlocks = 0
-
+                if numBlob is None:
+                    numBlob = 0
+                if numAssembly is None:
+                    numAssembly = 0                    
                 info = [title, numDims, numNodes, numElems, numBlocks,
                         numNodeSets, numSideSets]
                 if None not in info:
@@ -842,6 +844,7 @@ def put_info_ext(self, p):
         self.numNodeSets = ctypes.c_longlong(p.num_node_sets)
         self.numSideSets = ctypes.c_longlong(p.num_side_sets)
         self.numAssembly = ctypes.c_longlong(p.num_assembly)
+        self.numBlob = ctypes.c_longlong(p.num_blob)
 
         EXODUS_LIB.ex_put_init_ext(self.fileId, ctypes.byref(p))
         return True

packages/seacas/scripts/tests/test_exodus3.py

@@ -17,6 +17,7 @@
 
 ACCESS = os.getenv("ACCESS", "@ACCESSDIR@")
 sys.path.append(os.path.join(ACCESS, "lib"))
+sys.path.append(os.path.join(ACCESS, "lib64"))
 import exodus as exo
 
 
@@ -59,6 +60,19 @@ def test_exodus_context_manager_reraises_exceptions(self):
             with exo.exodus(self.temp_exo_path, mode="r"):
                 self.assertFalse(True)
 
+    def test_ex_init_params(self):
+        ex_pars = exo.ex_init_params(
+            num_dim=2,
+            num_nodes=9,
+            num_elem=4,
+            num_elem_blk=1,
+            num_assembly=0,
+            num_blob=0,
+        )
+        new_temp_exo_path = os.path.join(self.tempdir.name, "newexodusfile.e")
+        with exo.exodus(new_temp_exo_path, mode="w+", init_params=ex_pars) as exo_file:
+            exo_file.summarize()
+
     def test_copy_opened_in_append_mode(self):
         new = exo.assembly(
             name="Unit_test", type=exo.ex_entity_type.EX_ASSEMBLY, id=444