General script cleanup

dlaudio.py

@@ -3,22 +3,36 @@
 
 Dependencies:
 =============
+
 * youtube-dl
 """
 
 import argparse
-import pathlib
+from pathlib import Path
 import shutil
 import subprocess
 
 # =========== Constants ==========
-YOUTUBE_DL_BIN = shutil.which("youtube-dl")
+YOUTUBE_DL_BIN = "/usr/bin/youtube-dl"
-DEFAULT_FILENAME = f"{pathlib.Path.home()}/Music/%(title)s.%(ext)s"
+DEFAULT_FILENAME = f"{Path.home() / 'Music'}/%(title)s.%(ext)s"
+DEFAULT_YOUTUBE_DL_OPTS = (
+    "--no-part",
+    "--audio-quality=0",
+    "--no-continue",
+    "--extract-audio",
+)
 
-# ========== Error Codes ==========
+# ----- Error Codes -----
 E_NOURLS = 2
 
-# ========== Main Script ==========
+
+# ========== Functions ==========
+def parse_cmdline_arguments(**kwargs):
+    """Parse command line arguments passed to the script.
+        All kwargs are passed to ArgumentParser.parse_args().
+
+    :rtype: argparse.Namespace object
+    """
     parser = argparse.ArgumentParser()
     parser.add_argument("-b", "--batchfile", help="provide the links from a text file")
     parser.add_argument(
@@ -28,13 +42,17 @@ parser.add_argument(
         "-n", "--filename", type=str, help="downloaded filename (without extension)"
     )
     parser.add_argument("urls", nargs="*", help="video URLs")
-args = parser.parse_args()
+
+    return parser.parse_args()
+
+
+# ========== Main Script ==========
+if __name__ == "__main__":
+    args = parse_cmdline_arguments()
 
     dl_opts = [
         YOUTUBE_DL_BIN,
-    "--no-part",
+        *DEFAULT_YOUTUBE_DL_OPTS,
-    "--no-continue",
-    "--extract-audio",
         f"--audio-format={args.format}",
     ]