Add RUF018 to lint.select

Author: jacob720

template/pyproject.toml.jinja

@@ -103,18 +103,19 @@ allowlist_externals =
 src = ["src", "tests"]
 line-length = 88
 lint.select = [
-    "B",   # flake8-bugbear - https://docs.astral.sh/ruff/rules/#flake8-bugbear-b
-    "C4",  # flake8-comprehensions - https://docs.astral.sh/ruff/rules/#flake8-comprehensions-c4
-    "E",   # pycodestyle errors - https://docs.astral.sh/ruff/rules/#error-e
-    "F",   # pyflakes rules - https://docs.astral.sh/ruff/rules/#pyflakes-f
-    "W",   # pycodestyle warnings - https://docs.astral.sh/ruff/rules/#warning-w
-    "I",   # isort - https://docs.astral.sh/ruff/rules/#isort-i
-    "UP",  # pyupgrade - https://docs.astral.sh/ruff/rules/#pyupgrade-up
-    "SLF", # self - https://docs.astral.sh/ruff/settings/#lintflake8-self
+    "B",     # flake8-bugbear - https://docs.astral.sh/ruff/rules/#flake8-bugbear-b
+    "C4",    # flake8-comprehensions - https://docs.astral.sh/ruff/rules/#flake8-comprehensions-c4
+    "E",     # pycodestyle errors - https://docs.astral.sh/ruff/rules/#error-e
+    "F",     # pyflakes rules - https://docs.astral.sh/ruff/rules/#pyflakes-f
+    "W",     # pycodestyle warnings - https://docs.astral.sh/ruff/rules/#warning-w
+    "I",     # isort - https://docs.astral.sh/ruff/rules/#isort-i
+    "UP",    # pyupgrade - https://docs.astral.sh/ruff/rules/#pyupgrade-up
+    "SLF",   # self - https://docs.astral.sh/ruff/settings/#lintflake8-self
+    "RUF018" # walrus operators in asserts - https://docs.astral.sh/ruff/rules/assignment-in-assert/
 ]
 
 [tool.ruff.lint.per-file-ignores]
 # By default, private member access is allowed in tests
 # See https://github.com/DiamondLightSource/python-copier-template/issues/154
-# Remove this line to forbid private member access in tests
-"tests/**/*" = ["SLF001"]
+# Remove this line to forbid private member access, walrus operators inside asserts in tests
+"tests/**/*" = ["SLF001", "RUF018"]