Add ruff.toml configuration file

.ruff.toml

@@ -0,0 +1,31 @@
+# Lint all .py files and extra python scripts without extensions
+include = ["*.py", "bin/wsim", "bin/regression-wally", "bin/iterelf", "sim/vcs/run_vcs"]
+exclude = ["addins/*", "tests/wally-riscv-arch-test/riscv-test-suite/rv64i_m/Q/*", "tests/fp/quad/fpdatasetgen.py"]
+
+# Target oldest version of Python used (Python 3.9 for Ubuntu 20.04 LTS)
+target-version = "py39"
+
+line-length=250
+
+[lint]
+select = [
+  "F",    # various basic rules
+  "E101", # indentation contains mixed spaces and tabs
+  "E4",   # imports
+  "E7",   # various improvements
+  "E9",   # error
+  "W1",   # tabs used instead of spaces
+  "W292", # no newline at end of file
+  "UP",   # Upgraded version available in newer Python
+  "EXE",  # Executable file shebangs
+  "Q003", # Avoidable escaped quotes
+  "Q004", # Unnecessary esacpe character
+  "RUF",  # Ruff specific rules
+]
+
+ignore = [
+  "E701", "E702",   # multiple statements on one line
+  "E722",           # do not use bare 'except'
+  "E74",            # ambiguous name
+  "RUF005",         # iterable unpacking in list
+]