add mypy and black checks to 'make test'; resolve lints

Makefile

@@ -21,10 +21,16 @@ super-clean: super-clean-message clean-silent
 	@rm -rf venv*
 
 
-test: test-versions test-installed test-coverage
+test: test-mypy test-black test-versions test-installed test-coverage
 	@# test-coverage needs to be last in deps, don't clean after it runs!
 	@echo "\n(test) completed\n"
 
+test-mypy:
+	mypy green example
+
+test-black:
+	black --check --diff green example
+
 test-local:
 	@pip3 install --upgrade -e '.[dev]'
 	@make test-installed

green/process.py

@@ -64,8 +64,8 @@ def ddebug(msg: str, err: ExcInfoType | None = None) -> None:  # pragma: no cove
         error_string = "".join(traceback.format_exception(*err))
     else:
         error_string = ""
-    sys.__stdout__.write(f"({os.getpid()}) {msg} {error_string}\n")
-    sys.__stdout__.flush()
+    sys.__stdout__.write(f"({os.getpid()}) {msg} {error_string}\n")  # type: ignore
+    sys.__stdout__.flush()  # type: ignore
 
 
 class ProcessLogger: