Add ruff and apply it

weather-server-python/pyproject.toml

@@ -13,6 +13,41 @@ dependencies = [
 requires = [ "hatchling",]
 build-backend = "hatchling.build"
 
+[dependency-groups]
+dev = [
+    "ruff>=0.14.8",
+]
+
 [project.scripts]
 weather = "weather:main"
 
+[tool.ruff]
+line-length = 120
+target-version = "py310"
+extend-exclude = ["README.md"]
+
+[tool.ruff.lint]
+select = [
+    "C4",   # flake8-comprehensions
+    "C90",  # mccabe
+    "E",    # pycodestyle
+    "F",    # pyflakes
+    "I",    # isort
+    "PERF", # Perflint
+    "PL",   # Pylint
+    "UP",   # pyupgrade
+]
+ignore = ["PERF203", "PLC0415", "PLR0402"]
+mccabe.max-complexity = 24 # Default is 10
+
+[tool.ruff.lint.per-file-ignores]
+"__init__.py" = ["F401"]
+"tests/server/fastmcp/test_func_metadata.py" = ["E501"]
+"tests/shared/test_progress_notifications.py" = ["PLW0603"]
+
+[tool.ruff.lint.pylint]
+allow-magic-value-types = ["bytes", "float", "int", "str"]
+max-args = 23                                              # Default is 5
+max-branches = 23                                          # Default is 12
+max-returns = 13                                           # Default is 6
+max-statements = 102                                       # Default is 50