Adds -v --version to display version

README.rst

@@ -62,11 +62,12 @@ First, launch the daemon to watch a directory new inputs.
 
 .. code::
 
-    usage: youtube-music-upload [-h] [--directory DIRECTORY] [--oauth OAUTH] [-r]
+    usage: youtube-music-upload [-h] [-v] [--directory DIRECTORY] [--oauth OAUTH] [-r]
                               [-o] [--deduplicate_api DEDUPLICATE_API]
 
     optional arguments:
       -h, --help            show this help message and exit
+      -v, --version         show version number and exit
       --directory DIRECTORY, -d DIRECTORY
                             Music Folder to upload from (default: .)
       --oauth OAUTH, -a OAUTH

youtube_music_uploader/__init__.py

@@ -2,5 +2,5 @@
 This program will upload your music library to YouTube Music
 """
 
-__all__ = ['uploader_daemon']
+__all__ = ['uploader_daemon', '__version__']
 __version__ = '1.0.0'

youtube_music_uploader/uploader_daemon.py

@@ -8,6 +8,7 @@
 import glob
 import argparse
 import requests
+from .__init__ import __version__
 
 from watchdog.observers import Observer
 from watchdog.events import FileSystemEventHandler
@@ -177,7 +178,16 @@ def main():
         default=None,
         help="Deduplicate API (should be HTTP and compatible with the manifest (see README)) (default: None)"
     )
+    parser.add_argument(
+        "--version",
+        '-v',
+        action='store_true',
+        help="show version number and exit"
+    )
     args = parser.parse_args()
+    if args.version:
+        print(__version__)
+        return
     upload(
         directory=args.directory,
         oauth=args.oauth,