message: PY3 migration - set py_test target to "PY3" in `lite/testing/model_coverage/BUILD.bazel`.
diff: @@ -18,6 +18,7 @@ py_library(
  py_test(
  name = "model_coverage_lib_test",
  srcs = ["model_coverage_lib_test.py"],
  + python_version = "PY3",
  srcs_version = "PY2AND3",
  tags = [
  "manual",
  