[CLI] Remove duplicate sources, bump versions in pre-commit config

Author: egeakman

.pre-commit-config.yaml

@@ -1,6 +1,6 @@
 repos:
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.1.9
+    rev: v0.2.1
     hooks:
       - id: ruff
       - id: ruff-format
@@ -12,7 +12,7 @@ repos:
       - id: isort
 
   - repo: https://github.com/psf/black-pre-commit-mirror
-    rev: 23.12.1
+    rev: 24.1.1
     hooks:
       - id: black
 
@@ -27,11 +27,11 @@ repos:
       - id: trailing-whitespace
 
   - repo: https://github.com/tox-dev/pyproject-fmt
-    rev: 1.5.3
+    rev: 1.7.0
     hooks:
       - id: pyproject-fmt
 
   - repo: https://github.com/abravalheri/validate-pyproject
-    rev: v0.15
+    rev: v0.16
     hooks:
       - id: validate-pyproject

mjpeg_streamer/cli.py

@@ -36,6 +36,7 @@ def parse_args() -> argparse.Namespace:
     args.prefix = re.sub("[^0-9a-zA-Z]+", "_", args.prefix)
     args.source: List[Union[int, str],] = [[0]] if args.source is None else args.source
     args.source = [item for sublist in args.source for item in sublist]
+    args.source = list(set(args.source))
     return args