update usage statement to include METplus version number

ush/run_metplus.py

@@ -28,6 +28,7 @@
 import produtil.setup
 
 from metplus.util import pre_run_setup, run_metplus, post_run_cleanup
+from metplus import __version__ as metplus_version
 
 '''!@namespace run_metplus
 Main script the processes all the tasks in the PROCESS_LIST
@@ -57,15 +58,12 @@ def main():
 
 def usage():
     """!How to call this script."""
-    print ('''
-Usage: %s arg1 arg2 arg3
-    -h|--help               Display this usage statement
-
-Arguments:
-/path/to/parmfile.conf -- Specify custom configuration file to use
-section.option=value -- override conf options on the command line
-
-'''%(basename(__file__)))
+    print(f"Running METplus v{metplus_version}\n"
+          f"Usage: {basename(__file__)} arg1 arg2 arg3\n"
+          "    -h|--help               Display this usage statement\n\n"
+          "Arguments:\n"
+          "/path/to/parmfile.conf -- Specify custom configuration file to use\n"
+          "section.option=value -- override conf options on the command line")
     sys.exit(2)
 
 
@@ -83,9 +81,8 @@ def get_config_inputs_from_command_line():
 
     # print usage statement and exit if help arg is found
     help_args = ('-h', '--help', '-help')
-    for help_arg in help_args:
-        if help_arg in sys.argv:
-            usage()
+    if any(arg in sys.argv for arg in help_args):
+        usage()
 
     # pull out command line arguments
     config_inputs = []