configure flake8 and fix issues

poetry.lock

@@ -94,6 +94,24 @@ mccabe = ">=0.7.0,<0.8.0"
 pycodestyle = ">=2.10.0,<2.11.0"
 pyflakes = ">=3.0.0,<3.1.0"
 
+[[package]]
+name = "flake8-pyproject"
+version = "1.2.3"
+description = "Flake8 plug-in loading the configuration from pyproject.toml"
+category = "dev"
+optional = false
+python-versions = ">= 3.6"
+files = [
+    {file = "flake8_pyproject-1.2.3-py3-none-any.whl", hash = "sha256:6249fe53545205af5e76837644dc80b4c10037e73a0e5db87ff562d75fb5bd4a"},
+]
+
+[package.dependencies]
+Flake8 = ">=5"
+TOMLi = {version = "*", markers = "python_version < \"3.11\""}
+
+[package.extras]
+dev = ["pyTest", "pyTest-cov"]
+
 [[package]]
 name = "mccabe"
 version = "0.7.0"
@@ -369,4 +387,4 @@ files = [
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.9"
-content-hash = "b90de4dbcb9039b01369909dd0a6cf26b2346671b8907ccbbe5bbea6a06a6182"
+content-hash = "bbed92f250e97d898bbff9948aa49a22308abedc4f9f5dd165c94e9af1972bae"

pyproject.toml

@@ -7,8 +7,8 @@ readme = "README.md"
 
 [tool.poetry.dependencies]
 python = "^3.9"
-spidev = "^3.6"
-mfrc522 = "^0.0.7"
+spidev = { version = "^3.6", "platform" = "linux" }
+mfrc522 = { version = "^0.0.7", platform = "linux" }
 pydantic = "^1.10.7"
 python-mpd2 = "^3.1.0"
 
@@ -17,7 +17,13 @@ python-mpd2 = "^3.1.0"
 black = "^23.3.0"
 mypy = "^1.3.0"
 flake8 = "^6.0.0"
+flake8-pyproject = "^1.2.3"
 
 [build-system]
 requires = ["poetry-core"]
 build-backend = "poetry.core.masonry.api"
+
+[tool.flake8]
+max-line-length = 88
+select = ['C', 'E', 'F', 'W', 'B', 'B950']
+extend-ignore = ['E203', 'E501', 'W503']

src/sleepywaves.py

@@ -2,7 +2,7 @@
 
 RFID/NFC-based sleep time audio player. """
 
-from typing import Literal, Optional, Dict, Any, List, Union
+from typing import Literal, Optional, Dict, List
 from abc import ABC, abstractmethod
 
 import logging
@@ -146,7 +146,7 @@ class Player:
     def read_burst(self) -> Optional[int]:
         tag_id: Optional[int] = None
         for _ in range(10):
-            tag_id = self.reader.read_id_no_block()  # type:ignore
+            tag_id: Optional[int] = self.reader.read_id_no_block()
             if tag_id is not None:
                 return tag_id
         return None
@@ -290,7 +290,7 @@ class MpdRenderer(Renderer):
     def __init__(self) -> None:
         super().__init__()
 
-        self.mpd = MPDClient()  # type:ignore
+        self.mpd: MPDClient = MPDClient()
         self.mpd.timeout = 10
         self.mpd.connect("/var/run/mpd/socket")
         self.mpd.clear()
@@ -342,7 +342,7 @@ def main(media_path: str, renderer_type: str) -> None:
     else:
         renderer = DebugRenderer()
     player = Player(media_path=media_path, renderer=renderer)
-    log.info('sleepywaves ready.')
+    log.info("sleepywaves ready.")
     try:
         while True:
             player.process()
@@ -363,7 +363,7 @@ if __name__ == "__main__":
     )
     parser.add_argument(
         "--log",
-        choices=list(log_levels) + [l.lower() for l in log_levels],
+        choices=list(log_levels) + [lv.lower() for lv in log_levels],
         default="WARNING",
         help="log level",
     )