From 3d3e94c4e02370f307a9a200b0c743c3d8d19f29 Mon Sep 17 00:00:00 2001
From: "Leah E. Cole" <6719667+leahecole@users.noreply.github.com>
Date: Wed, 4 Nov 2020 17:36:32 -0800
Subject: [PATCH] chore: add type hint check (#840)

---
 synthtool/gcp/templates/python_samples/noxfile.py.j2 | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/synthtool/gcp/templates/python_samples/noxfile.py.j2 b/synthtool/gcp/templates/python_samples/noxfile.py.j2
index 01686e4a0..4621115ed 100644
--- a/synthtool/gcp/templates/python_samples/noxfile.py.j2
+++ b/synthtool/gcp/templates/python_samples/noxfile.py.j2
@@ -39,6 +39,10 @@ TEST_CONFIG = {
     # You can opt out from the test for specific Python versions.
     'ignored_versions': ["2.7"],
 
+    # Old samples are opted out of enforcing Python type hints
+    # All new samples should feature them
+    'enforce_type_hints': False,
+
     # An envvar key for determining the project id to use. Change it
     # to 'BUILD_SPECIFIC_GCLOUD_PROJECT' if you want to opt in using a
     # build specific Cloud project. You can also use your own string
@@ -132,7 +136,10 @@ FLAKE8_COMMON_ARGS = [
 
 @nox.session
 def lint(session):
-    session.install("flake8", "flake8-import-order")
+    if not TEST_CONFIG['enforce_type_hints']:
+        session.install("flake8", "flake8-import-order")
+    else:
+        session.install("flake8", "flake8-import-order", "flake8-annotations")
 
     local_names = _determine_local_import_names(".")
     args = FLAKE8_COMMON_ARGS + [