Fix type annotations in sst_unittest_support.py (#1176)

* add Python type annotations to tests

* fix Python string escaping

* sst_unittest_support.py: fix type annotations

* sst_unittest_support.py: fix comparisons against None

* sst_unittest_support.py: don't use match keyword as variable name

* sst_unittest_support.py: deduplicate implementation in testing_compare_filtered_subset

* sst_unittest_support.py: remove outdated call to platform.linux_distribution

* sst_unittest_support.py: update type annotations for comparing filtered lines

* pyproject.toml: update mypy configuration

* sst_unittest_support.py: fix specificity of generic type parameters

pyproject.toml

@@ -1,19 +1,22 @@
 [tool.mypy]
+cache_dir = "build/.mypy_cache"
 explicit_package_bases = true
 mypy_path = "$MYPY_CONFIG_FILE_DIR/src/sst/core/testingframework"
+# This should be 3.6 but is not supported with the newest versions of mypy.
+python_version = "3.8"
 
-warn_unused_ignores = true
-
-warn_return_any = true
-warn_unused_configs = true
-
-disallow_untyped_defs = true
+strict = true
 
 exclude = [
     '^scripts/',
     '^tests/',
 ]
 
 [[tool.mypy.overrides]]
-module = "sst"
+module = [
+    "blessings",
+    "sst",
+    "testtools",
+    "testtools.testsuite",
+]
 ignore_missing_imports = true

src/sst/core/model/python/unittests/test-ua.py

@@ -98,7 +98,7 @@
 ua3_id_before = id(ua3)
 ua3 /= ua2
 if id(ua3) == ua3_id_before:
-    print("ERROR: \= operator returned the same object")
+    print(r"ERROR: \= operator returned the same object")
 print(ua3)
 print(ua4)