Improve standalone vs import usage #2

Move args management & print() only if __name__ == __main__

TODO: remove print() by a logger

cli/gpx.py

@@ -7,7 +7,6 @@ Process a GPX file to get informations.
 
 import sys as mod_sys
 import logging as mod_logging
-import argparse as mod_argparse
 from typing import Union, List
 
 import gpxpy as mod_gpxpy
@@ -87,7 +86,7 @@ def get_gpx_info(gpx: mod_gpx.GPX, gpx_file: str) -> None:
     # gpx_summary.update({"segments": len(track.segments)})
 
     gpx_summary.update(get_gpx_part_info(gpx))
-    print(gpx_summary)
+    return gpx_summary
 
 
 def run(gpx_files: List[str]) -> None:
@@ -101,7 +100,7 @@ def run(gpx_files: List[str]) -> None:
             gpx = mod_gpxpy.parse(open_file)
 
             try:
-                get_gpx_info(gpx, gpx_file)
+                return get_gpx_info(gpx, gpx_file)
             except mod_gpx.GPXXMLSyntaxException as except_detail:
                 mod_logging.exception(except_detail)
                 mod_sys.exit(1)
@@ -114,20 +113,12 @@ def run(gpx_files: List[str]) -> None:
 
 
 if __name__ == "__main__":
+    import argparse as mod_argparse
+
     parser = mod_argparse.ArgumentParser(
-        usage="%(prog)s [-d] [file ...]",
+        usage="%(prog)s [-h] path_to_gpx_file(s)",
         description="Command line utility to extract basic statistics from gpx file(s)",
     )
-    parser.add_argument(
-        "-d", "--debug", action="store_true", help="show detailed logging"
-    )
     args, local_files = parser.parse_known_args()
-    debug = args.debug
-
-    if debug:
-        mod_logging.basicConfig(
-            level=mod_logging.DEBUG,
-            format="%(asctime)s %(name)-12s %(levelname)-8s %(message)s",
-        )
 
-    run(gpx_files=local_files)
+    print(run(gpx_files=local_files))