lesson 03: photorec file scanner with dry-run flag

learning/03-photorec-scanner/scanner.py

@@ -0,0 +1,35 @@
+import os
+import shutil
+import argparse
+
+def parse_args():
+    parser = argparse.ArgumentParser(description="Sort files by extension into subfolders")
+    parser.add_argument("source", help="Directory to scan")
+    parser.add_argument("dest", help="Destination directory")
+    parser.add_argument("--ext", nargs="+", required=True, help="Extensions to match e.g. jpg png")
+    parser.add_argument("--dry-run", action="store_true", help="Preview only, no files moved")
+    return parser.parse_args()
+def scan_and_move(source, dest, extensions, dry_run):
+    extensions = [e.lower().lstrip(".") for e in extensions]
+    matched = 0
+
+    for root, dirs, files in os.walk(source):
+        for file in files:
+            ext = os.path.splitext(file)[1].lower().lstrip(".")
+            if ext in extensions:
+                src_path = os.path.join(root, file)
+                dest_dir = os.path.join(dest, ext)
+                dest_path = os.path.join(dest_dir, file)
+
+                print(f"{'[DRY RUN] ' if dry_run else ''}Moving: {src_path} → {dest_path}")
+
+                if not dry_run:
+                    os.makedirs(dest_dir, exist_ok=True)
+                    shutil.move(src_path, dest_path)
+
+                matched += 1
+
+    print(f"\nDone. {matched} file(s) matched.")
+if __name__ == "__main__":
+    args = parse_args()
+    scan_and_move(args.source, args.dest, args.ext, args.dry_run)