diff --git a/.kokoro/docker/Dockerfile b/.kokoro/docker/Dockerfile
index 137fd45fbfca..ca0e4325a6bb 100644
--- a/.kokoro/docker/Dockerfile
+++ b/.kokoro/docker/Dockerfile
@@ -45,6 +45,7 @@ RUN apt-get update \
     libffi-dev \
     liblzma-dev \
     libmagickwand-dev \
+    libmemcached-dev \
     libpython3-dev \
     libreadline-dev \
     libsnappy-dev \
@@ -103,7 +104,7 @@ RUN set -ex \
     && export GNUPGHOME="$(mktemp -d)" \
     && echo "disable-ipv6" >> "${GNUPGHOME}/dirmngr.conf" \
     && /tmp/fetch_gpg_keys.sh \
-    && for PYTHON_VERSION in 2.7.18 3.6.10 3.7.7 3.8.3; do \
+    && for PYTHON_VERSION in 2.7.18 3.6.10 3.7.7 3.8.3 3.9.0; do \
         wget --no-check-certificate -O python-${PYTHON_VERSION}.tar.xz "https://www.python.org/ftp/python/${PYTHON_VERSION%%[a-z]*}/Python-$PYTHON_VERSION.tar.xz" \
         && wget --no-check-certificate -O python-${PYTHON_VERSION}.tar.xz.asc "https://www.python.org/ftp/python/${PYTHON_VERSION%%[a-z]*}/Python-$PYTHON_VERSION.tar.xz.asc" \
         && gpg --batch --verify python-${PYTHON_VERSION}.tar.xz.asc python-${PYTHON_VERSION}.tar.xz \
diff --git a/.kokoro/docker/fetch_gpg_keys.sh b/.kokoro/docker/fetch_gpg_keys.sh
index bec72f622d26..57aba1fdb96f 100755
--- a/.kokoro/docker/fetch_gpg_keys.sh
+++ b/.kokoro/docker/fetch_gpg_keys.sh
@@ -44,6 +44,10 @@ retry 3 gpg --keyserver ha.pool.sks-keyservers.net --recv-keys \
 retry 3 gpg --keyserver ha.pool.sks-keyservers.net --recv-keys \
       0D96DF4D4110E5C43FBFB17F2D347EA6AA65421D
 
-# 3.8.0 (Łukasz Langa)
+# 3.8.0, 3.9.0 (Łukasz Langa)
 retry 3 gpg --keyserver ha.pool.sks-keyservers.net --recv-keys \
       E3FF2839C048B25C084DEBE9B26995E310250568
+
+# 3.10.x and 3.11.x (Pablo Galindo Salgado)
+retry 3 gpg --keyserver ha.pool.sks-keyservers.net --recv-keys \
+      A035C8C19219BA821ECEA86B64E628F8D684696D
diff --git a/.kokoro/python3.9/common.cfg b/.kokoro/python3.9/common.cfg
new file mode 100644
index 000000000000..b5e3a94fcba4
--- /dev/null
+++ b/.kokoro/python3.9/common.cfg
@@ -0,0 +1,63 @@
+# Copyright 2019 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Format: //devtools/kokoro/config/proto/build.proto
+
+timeout_mins: 300
+
+# Configure the docker image for kokoro-trampoline.
+env_vars: {
+    key: "TRAMPOLINE_IMAGE"
+    value: "gcr.io/cloud-devrel-kokoro-resources/python-samples-testing-docker"
+}
+
+# Download trampoline resources.
+gfile_resources: "/bigstore/cloud-devrel-kokoro-resources/trampoline"
+
+# Use the trampoline script to run in docker.
+build_file: "python-docs-samples/.kokoro/trampoline_v2.sh"
+
+# Download secrets from Cloud Storage.
+gfile_resources: "/bigstore/cloud-devrel-kokoro-resources/python-docs-samples"
+
+# Copy results for Resultstore
+action {
+  define_artifacts {
+    regex: "**/*sponge_log.xml"
+  }
+}
+
+# Specify which tests to run
+env_vars: {
+    key: "RUN_TESTS_SESSION"
+    value: "py-3.9"
+}
+
+# Declare build specific Cloud project. It still uses the common one,
+# but we'll update the value once we have more Cloud projects.
+env_vars: {
+    key: "BUILD_SPECIFIC_GCLOUD_PROJECT"
+    value: "python-docs-samples-tests-py39"
+}
+
+# Number of test workers.
+env_vars: {
+    key: "NUM_TEST_WORKERS"
+    value: "10"
+}
+
+env_vars: {
+    key: "TRAMPOLINE_DOCKERFILE"
+    value: ".kokoro/docker/Dockerfile"
+}
diff --git a/.kokoro/python3.9/continuous.cfg b/.kokoro/python3.9/continuous.cfg
new file mode 100644
index 000000000000..cfbe29058c88
--- /dev/null
+++ b/.kokoro/python3.9/continuous.cfg
@@ -0,0 +1,21 @@
+# Copyright 2020 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Format: //devtools/kokoro/config/proto/build.proto
+
+# Tell the trampoline which build file to use.
+env_vars: {
+    key: "TRAMPOLINE_BUILD_FILE"
+    value: ".kokoro/tests/run_tests_diff_head.sh"
+}
diff --git a/.kokoro/python3.9/periodic.cfg b/.kokoro/python3.9/periodic.cfg
new file mode 100644
index 000000000000..86f13817c222
--- /dev/null
+++ b/.kokoro/python3.9/periodic.cfg
@@ -0,0 +1,32 @@
+# Copyright 2020 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Format: //devtools/kokoro/config/proto/build.proto
+
+# Tell the trampoline which build file to use.
+env_vars: {
+    key: "TRAMPOLINE_BUILD_FILE"
+    value: ".kokoro/tests/run_tests.sh"
+}
+
+env_vars: {
+    key: "REPORT_TO_BUILD_COP_BOT"
+    value: "true"
+}
+
+# Tell Trampoline to upload the Docker image after successfull build.
+env_vars: {
+    key: "TRAMPOLINE_IMAGE_UPLOAD"
+    value: "true"
+}
diff --git a/.kokoro/python3.9/presubmit.cfg b/.kokoro/python3.9/presubmit.cfg
new file mode 100644
index 000000000000..1cf6a4b7382a
--- /dev/null
+++ b/.kokoro/python3.9/presubmit.cfg
@@ -0,0 +1,21 @@
+# Copyright 2019 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Format: //devtools/kokoro/config/proto/build.proto
+
+# Tell the trampoline which build file to use.
+env_vars: {
+    key: "TRAMPOLINE_BUILD_FILE"
+    value: ".kokoro/tests/run_tests_diff_master.sh"
+}
diff --git a/appengine/flexible/memcache/noxfile.py b/appengine/flexible/memcache/noxfile.py
index 0e3979cdca56..e3bf811ab994 100644
--- a/appengine/flexible/memcache/noxfile.py
+++ b/appengine/flexible/memcache/noxfile.py
@@ -22,7 +22,7 @@
 
 # DO NOT EDIT - automatically generated.
 # All versions used to tested samples.
-ALL_VERSIONS = ["2.7", "3.6", "3.7", "3.8"]
+ALL_VERSIONS = ["2.7", "3.6", "3.7", "3.8", "3.9"]
 
 # Any default versions that should be ignored.
 IGNORED_VERSIONS = ["2.7", "3.8"]
diff --git a/appengine/standard/noxfile-template.py b/appengine/standard/noxfile-template.py
index b7fa361d97a4..4379a081ebf3 100644
--- a/appengine/standard/noxfile-template.py
+++ b/appengine/standard/noxfile-template.py
@@ -81,10 +81,10 @@ def get_pytest_env_vars():
 
 # DO NOT EDIT - automatically generated.
 # All versions used to tested samples.
-ALL_VERSIONS = ["2.7", "3.6", "3.7", "3.8"]
+ALL_VERSIONS = ["2.7", "3.6", "3.7", "3.8", "3.9"]
 
 # Any default versions that should be ignored.
-IGNORED_VERSIONS = ["3.6", "3.7", "3.8"]
+IGNORED_VERSIONS = ["3.6", "3.7", "3.8", "3.9"]
 
 TESTED_VERSIONS = sorted([v for v in ALL_VERSIONS if v not in IGNORED_VERSIONS])
 
diff --git a/appengine/standard_python3/bigquery/noxfile_config.py b/appengine/standard_python3/bigquery/noxfile_config.py
new file mode 100644
index 000000000000..17fd0b01bf24
--- /dev/null
+++ b/appengine/standard_python3/bigquery/noxfile_config.py
@@ -0,0 +1,39 @@
+# Copyright 2021 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Default TEST_CONFIG_OVERRIDE for python repos.
+
+# You can copy this file into your directory, then it will be inported from
+# the noxfile.py.
+
+# The source of truth:
+# https://github.com/GoogleCloudPlatform/python-docs-samples/blob/master/noxfile_config.py
+
+TEST_CONFIG_OVERRIDE = {
+    # You can opt out from the test for specific Python versions.
+    # There's no google-cloud-bigquery package for Python 3.9.
+    "ignored_versions": ["2.7", "3.9"],
+    # 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
+    # to use your own Cloud project.
+    "gcloud_project_env": "GOOGLE_CLOUD_PROJECT",
+    # 'gcloud_project_env': 'BUILD_SPECIFIC_GCLOUD_PROJECT',
+    # A dictionary you want to inject into your test. Don't put any
+    # secrets here. These values will override predefined values.
+    "envs": {},
+}
diff --git a/appengine/standard_python3/cloud_debugger/noxfile_config.py b/appengine/standard_python3/cloud_debugger/noxfile_config.py
new file mode 100644
index 000000000000..9a7ec8ded333
--- /dev/null
+++ b/appengine/standard_python3/cloud_debugger/noxfile_config.py
@@ -0,0 +1,40 @@
+# Copyright 2021 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Default TEST_CONFIG_OVERRIDE for python repos.
+
+# You can copy this file into your directory, then it will be inported from
+# the noxfile.py.
+
+# The source of truth:
+# https://github.com/GoogleCloudPlatform/python-docs-samples/blob/master/noxfile_config.py
+
+TEST_CONFIG_OVERRIDE = {
+    # You can opt out from the test for specific Python versions.
+    # google-python-cloud-debugger doesn't support Python 3.9.
+    # https://github.com/GoogleCloudPlatform/cloud-debug-python/issues/22
+    "ignored_versions": ["2.7", "3.9"],
+    # 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
+    # to use your own Cloud project.
+    "gcloud_project_env": "GOOGLE_CLOUD_PROJECT",
+    # 'gcloud_project_env': 'BUILD_SPECIFIC_GCLOUD_PROJECT',
+    # A dictionary you want to inject into your test. Don't put any
+    # secrets here. These values will override predefined values.
+    "envs": {},
+}
diff --git a/bigquery/bqml/noxfile_config.py b/bigquery/bqml/noxfile_config.py
new file mode 100644
index 000000000000..da81697c595d
--- /dev/null
+++ b/bigquery/bqml/noxfile_config.py
@@ -0,0 +1,39 @@
+# Copyright 2021 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Default TEST_CONFIG_OVERRIDE for python repos.
+
+# You can copy this file into your directory, then it will be inported from
+# the noxfile.py.
+
+# The source of truth:
+# https://github.com/GoogleCloudPlatform/python-docs-samples/blob/master/noxfile_config.py
+
+TEST_CONFIG_OVERRIDE = {
+    # You can opt out from the test for specific Python versions.
+    # Skipping for Python 3.9 due to pyarrow compilation failure.
+    "ignored_versions": ["2.7", "3.9"],
+    # 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
+    # to use your own Cloud project.
+    "gcloud_project_env": "GOOGLE_CLOUD_PROJECT",
+    # 'gcloud_project_env': 'BUILD_SPECIFIC_GCLOUD_PROJECT',
+    # A dictionary you want to inject into your test. Don't put any
+    # secrets here. These values will override predefined values.
+    "envs": {},
+}
diff --git a/bigquery/datalab-migration/noxfile_config.py b/bigquery/datalab-migration/noxfile_config.py
new file mode 100644
index 000000000000..da81697c595d
--- /dev/null
+++ b/bigquery/datalab-migration/noxfile_config.py
@@ -0,0 +1,39 @@
+# Copyright 2021 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Default TEST_CONFIG_OVERRIDE for python repos.
+
+# You can copy this file into your directory, then it will be inported from
+# the noxfile.py.
+
+# The source of truth:
+# https://github.com/GoogleCloudPlatform/python-docs-samples/blob/master/noxfile_config.py
+
+TEST_CONFIG_OVERRIDE = {
+    # You can opt out from the test for specific Python versions.
+    # Skipping for Python 3.9 due to pyarrow compilation failure.
+    "ignored_versions": ["2.7", "3.9"],
+    # 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
+    # to use your own Cloud project.
+    "gcloud_project_env": "GOOGLE_CLOUD_PROJECT",
+    # 'gcloud_project_env': 'BUILD_SPECIFIC_GCLOUD_PROJECT',
+    # A dictionary you want to inject into your test. Don't put any
+    # secrets here. These values will override predefined values.
+    "envs": {},
+}
diff --git a/bigquery/pandas-gbq-migration/noxfile_config.py b/bigquery/pandas-gbq-migration/noxfile_config.py
new file mode 100644
index 000000000000..da81697c595d
--- /dev/null
+++ b/bigquery/pandas-gbq-migration/noxfile_config.py
@@ -0,0 +1,39 @@
+# Copyright 2021 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Default TEST_CONFIG_OVERRIDE for python repos.
+
+# You can copy this file into your directory, then it will be inported from
+# the noxfile.py.
+
+# The source of truth:
+# https://github.com/GoogleCloudPlatform/python-docs-samples/blob/master/noxfile_config.py
+
+TEST_CONFIG_OVERRIDE = {
+    # You can opt out from the test for specific Python versions.
+    # Skipping for Python 3.9 due to pyarrow compilation failure.
+    "ignored_versions": ["2.7", "3.9"],
+    # 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
+    # to use your own Cloud project.
+    "gcloud_project_env": "GOOGLE_CLOUD_PROJECT",
+    # 'gcloud_project_env': 'BUILD_SPECIFIC_GCLOUD_PROJECT',
+    # A dictionary you want to inject into your test. Don't put any
+    # secrets here. These values will override predefined values.
+    "envs": {},
+}
diff --git a/cloud-sql/mysql/sqlalchemy/noxfile.py b/cloud-sql/mysql/sqlalchemy/noxfile.py
index a30e4a6baf7d..27d6f7ca9688 100644
--- a/cloud-sql/mysql/sqlalchemy/noxfile.py
+++ b/cloud-sql/mysql/sqlalchemy/noxfile.py
@@ -81,7 +81,7 @@ def get_pytest_env_vars():
 
 # DO NOT EDIT - automatically generated.
 # All versions used to tested samples.
-ALL_VERSIONS = ["2.7", "3.6", "3.7", "3.8"]
+ALL_VERSIONS = ["2.7", "3.6", "3.7", "3.8", "3.9"]
 
 # Any default versions that should be ignored.
 IGNORED_VERSIONS = TEST_CONFIG['ignored_versions']
diff --git a/cloud-sql/postgres/sqlalchemy/noxfile.py b/cloud-sql/postgres/sqlalchemy/noxfile.py
index a30e4a6baf7d..27d6f7ca9688 100644
--- a/cloud-sql/postgres/sqlalchemy/noxfile.py
+++ b/cloud-sql/postgres/sqlalchemy/noxfile.py
@@ -81,7 +81,7 @@ def get_pytest_env_vars():
 
 # DO NOT EDIT - automatically generated.
 # All versions used to tested samples.
-ALL_VERSIONS = ["2.7", "3.6", "3.7", "3.8"]
+ALL_VERSIONS = ["2.7", "3.6", "3.7", "3.8", "3.9"]
 
 # Any default versions that should be ignored.
 IGNORED_VERSIONS = TEST_CONFIG['ignored_versions']
diff --git a/cloud-sql/sql-server/sqlalchemy/noxfile.py b/cloud-sql/sql-server/sqlalchemy/noxfile.py
index a30e4a6baf7d..27d6f7ca9688 100644
--- a/cloud-sql/sql-server/sqlalchemy/noxfile.py
+++ b/cloud-sql/sql-server/sqlalchemy/noxfile.py
@@ -81,7 +81,7 @@ def get_pytest_env_vars():
 
 # DO NOT EDIT - automatically generated.
 # All versions used to tested samples.
-ALL_VERSIONS = ["2.7", "3.6", "3.7", "3.8"]
+ALL_VERSIONS = ["2.7", "3.6", "3.7", "3.8", "3.9"]
 
 # Any default versions that should be ignored.
 IGNORED_VERSIONS = TEST_CONFIG['ignored_versions']
diff --git a/composer/workflows/noxfile_config.py b/composer/workflows/noxfile_config.py
new file mode 100644
index 000000000000..4400d71d381d
--- /dev/null
+++ b/composer/workflows/noxfile_config.py
@@ -0,0 +1,39 @@
+# Copyright 2021 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Default TEST_CONFIG_OVERRIDE for python repos.
+
+# You can copy this file into your directory, then it will be inported from
+# the noxfile.py.
+
+# The source of truth:
+# https://github.com/GoogleCloudPlatform/python-docs-samples/blob/master/noxfile_config.py
+
+TEST_CONFIG_OVERRIDE = {
+    # You can opt out from the test for specific Python versions.
+    # Skipping for Python 3.9 due to numpy compilation failure.
+    "ignored_versions": ["2.7", "3.9"],
+    # 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
+    # to use your own Cloud project.
+    "gcloud_project_env": "GOOGLE_CLOUD_PROJECT",
+    # 'gcloud_project_env': 'BUILD_SPECIFIC_GCLOUD_PROJECT',
+    # A dictionary you want to inject into your test. Don't put any
+    # secrets here. These values will override predefined values.
+    "envs": {},
+}
diff --git a/composer/workflows/requirements.txt b/composer/workflows/requirements.txt
index fcaaed95ce10..a39735a24e84 100644
--- a/composer/workflows/requirements.txt
+++ b/composer/workflows/requirements.txt
@@ -3,5 +3,5 @@ cattrs==1.0.0 #this has to be explicitly pinned to 1.0.0 until airflow 1.10.13 w
 kubernetes==12.0.1
 scipy==1.4.1; python_version > '3.0'
 scipy==1.2.3; python_version < '3.0'
-numpy==1.17.4; python_version > '3.0'
+numpy==1.19.5; python_version > '3.0'
 numpy==1.16.6; python_version < '3.0'
diff --git a/data-science-onramp/data-cleaning/noxfile_config.py b/data-science-onramp/data-cleaning/noxfile_config.py
new file mode 100644
index 000000000000..da81697c595d
--- /dev/null
+++ b/data-science-onramp/data-cleaning/noxfile_config.py
@@ -0,0 +1,39 @@
+# Copyright 2021 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Default TEST_CONFIG_OVERRIDE for python repos.
+
+# You can copy this file into your directory, then it will be inported from
+# the noxfile.py.
+
+# The source of truth:
+# https://github.com/GoogleCloudPlatform/python-docs-samples/blob/master/noxfile_config.py
+
+TEST_CONFIG_OVERRIDE = {
+    # You can opt out from the test for specific Python versions.
+    # Skipping for Python 3.9 due to pyarrow compilation failure.
+    "ignored_versions": ["2.7", "3.9"],
+    # 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
+    # to use your own Cloud project.
+    "gcloud_project_env": "GOOGLE_CLOUD_PROJECT",
+    # 'gcloud_project_env': 'BUILD_SPECIFIC_GCLOUD_PROJECT',
+    # A dictionary you want to inject into your test. Don't put any
+    # secrets here. These values will override predefined values.
+    "envs": {},
+}
diff --git a/data-science-onramp/data-ingestion/noxfile_config.py b/data-science-onramp/data-ingestion/noxfile_config.py
new file mode 100644
index 000000000000..17fd0b01bf24
--- /dev/null
+++ b/data-science-onramp/data-ingestion/noxfile_config.py
@@ -0,0 +1,39 @@
+# Copyright 2021 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Default TEST_CONFIG_OVERRIDE for python repos.
+
+# You can copy this file into your directory, then it will be inported from
+# the noxfile.py.
+
+# The source of truth:
+# https://github.com/GoogleCloudPlatform/python-docs-samples/blob/master/noxfile_config.py
+
+TEST_CONFIG_OVERRIDE = {
+    # You can opt out from the test for specific Python versions.
+    # There's no google-cloud-bigquery package for Python 3.9.
+    "ignored_versions": ["2.7", "3.9"],
+    # 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
+    # to use your own Cloud project.
+    "gcloud_project_env": "GOOGLE_CLOUD_PROJECT",
+    # 'gcloud_project_env': 'BUILD_SPECIFIC_GCLOUD_PROJECT',
+    # A dictionary you want to inject into your test. Don't put any
+    # secrets here. These values will override predefined values.
+    "envs": {},
+}
diff --git a/dataflow/encryption-keys/noxfile.py b/dataflow/encryption-keys/noxfile.py
index 0e3979cdca56..c917ea77ced0 100644
--- a/dataflow/encryption-keys/noxfile.py
+++ b/dataflow/encryption-keys/noxfile.py
@@ -22,10 +22,10 @@
 
 # DO NOT EDIT - automatically generated.
 # All versions used to tested samples.
-ALL_VERSIONS = ["2.7", "3.6", "3.7", "3.8"]
+ALL_VERSIONS = ["2.7", "3.6", "3.7", "3.8", "3.9"]
 
 # Any default versions that should be ignored.
-IGNORED_VERSIONS = ["2.7", "3.8"]
+IGNORED_VERSIONS = ["2.7", "3.8", "3.9"]
 
 TESTED_VERSIONS = sorted([v for v in ALL_VERSIONS if v not in IGNORED_VERSIONS])
 
diff --git a/dataflow/flex-templates/streaming_beam/noxfile.py b/dataflow/flex-templates/streaming_beam/noxfile.py
index 0e3979cdca56..c917ea77ced0 100644
--- a/dataflow/flex-templates/streaming_beam/noxfile.py
+++ b/dataflow/flex-templates/streaming_beam/noxfile.py
@@ -22,10 +22,10 @@
 
 # DO NOT EDIT - automatically generated.
 # All versions used to tested samples.
-ALL_VERSIONS = ["2.7", "3.6", "3.7", "3.8"]
+ALL_VERSIONS = ["2.7", "3.6", "3.7", "3.8", "3.9"]
 
 # Any default versions that should be ignored.
-IGNORED_VERSIONS = ["2.7", "3.8"]
+IGNORED_VERSIONS = ["2.7", "3.8", "3.9"]
 
 TESTED_VERSIONS = sorted([v for v in ALL_VERSIONS if v not in IGNORED_VERSIONS])
 
diff --git a/eventarc/noxfile.py b/eventarc/noxfile.py
index a30e4a6baf7d..27d6f7ca9688 100644
--- a/eventarc/noxfile.py
+++ b/eventarc/noxfile.py
@@ -81,7 +81,7 @@ def get_pytest_env_vars():
 
 # DO NOT EDIT - automatically generated.
 # All versions used to tested samples.
-ALL_VERSIONS = ["2.7", "3.6", "3.7", "3.8"]
+ALL_VERSIONS = ["2.7", "3.6", "3.7", "3.8", "3.9"]
 
 # Any default versions that should be ignored.
 IGNORED_VERSIONS = TEST_CONFIG['ignored_versions']
diff --git a/iot/api-client/manager/manager.py b/iot/api-client/manager/manager.py
index 3f763ac8a422..d3bbec55213a 100644
--- a/iot/api-client/manager/manager.py
+++ b/iot/api-client/manager/manager.py
@@ -268,8 +268,11 @@ def get_state(service_account_json, project_id, cloud_region, registry_id, devic
 
     print("State history")
     states = client.list_device_states(request={"name": device_path}).device_states
-    for state in states:
-        print("State: {}".format(state))
+
+    # Avoid ReferenceError in py-3.9 builds.
+    if states:
+        for state in states:
+            print("State: {}".format(state))
 
     return states
 
diff --git a/ml_engine/online_prediction/noxfile.py b/ml_engine/online_prediction/noxfile.py
index 0e3979cdca56..c917ea77ced0 100644
--- a/ml_engine/online_prediction/noxfile.py
+++ b/ml_engine/online_prediction/noxfile.py
@@ -22,10 +22,10 @@
 
 # DO NOT EDIT - automatically generated.
 # All versions used to tested samples.
-ALL_VERSIONS = ["2.7", "3.6", "3.7", "3.8"]
+ALL_VERSIONS = ["2.7", "3.6", "3.7", "3.8", "3.9"]
 
 # Any default versions that should be ignored.
-IGNORED_VERSIONS = ["2.7", "3.8"]
+IGNORED_VERSIONS = ["2.7", "3.8", "3.9"]
 
 TESTED_VERSIONS = sorted([v for v in ALL_VERSIONS if v not in IGNORED_VERSIONS])
 
diff --git a/notebooks/noxfile_config.py b/notebooks/noxfile_config.py
new file mode 100644
index 000000000000..22d06bc8f683
--- /dev/null
+++ b/notebooks/noxfile_config.py
@@ -0,0 +1,39 @@
+# Copyright 2021 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Default TEST_CONFIG_OVERRIDE for python repos.
+
+# You can copy this file into your directory, then it will be inported from
+# the noxfile.py.
+
+# The source of truth:
+# https://github.com/GoogleCloudPlatform/python-docs-samples/blob/master/noxfile_config.py
+
+TEST_CONFIG_OVERRIDE = {
+    # You can opt out from the test for specific Python versions.
+    # Skipping for Python 3.9 due to pyarrow compilation failure.
+    "ignored_versions": ["2.7", "3.9"],
+    # Old samples are opted out of enforcing Python type hints
+    # All new samples should feature them
+    "enforce_type_hints": True,
+    # 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
+    # to use your own Cloud project.
+    "gcloud_project_env": "GOOGLE_CLOUD_PROJECT",
+    # 'gcloud_project_env': 'BUILD_SPECIFIC_GCLOUD_PROJECT',
+    # A dictionary you want to inject into your test. Don't put any
+    # secrets here. These values will override predefined values.
+    "envs": {},
+}
diff --git a/noxfile-template.py b/noxfile-template.py
index 9c28d5a0050e..1b11728e6f53 100644
--- a/noxfile-template.py
+++ b/noxfile-template.py
@@ -86,7 +86,7 @@ def get_pytest_env_vars() -> Dict[str, str]:
 
 # DO NOT EDIT - automatically generated.
 # All versions used to tested samples.
-ALL_VERSIONS = ["2.7", "3.6", "3.7", "3.8"]
+ALL_VERSIONS = ["2.7", "3.6", "3.7", "3.8", "3.9"]
 
 # Any default versions that should be ignored.
 IGNORED_VERSIONS = TEST_CONFIG['ignored_versions']
diff --git a/pubsub/streaming-analytics/noxfile.py b/pubsub/streaming-analytics/noxfile.py
index 0e3979cdca56..c917ea77ced0 100644
--- a/pubsub/streaming-analytics/noxfile.py
+++ b/pubsub/streaming-analytics/noxfile.py
@@ -22,10 +22,10 @@
 
 # DO NOT EDIT - automatically generated.
 # All versions used to tested samples.
-ALL_VERSIONS = ["2.7", "3.6", "3.7", "3.8"]
+ALL_VERSIONS = ["2.7", "3.6", "3.7", "3.8", "3.9"]
 
 # Any default versions that should be ignored.
-IGNORED_VERSIONS = ["2.7", "3.8"]
+IGNORED_VERSIONS = ["2.7", "3.8", "3.9"]
 
 TESTED_VERSIONS = sorted([v for v in ALL_VERSIONS if v not in IGNORED_VERSIONS])
 
diff --git a/run/deployment-previews/noxfile_config.py b/run/deployment-previews/noxfile_config.py
index 7b8aa473a34f..1a727d4c9dc3 100644
--- a/run/deployment-previews/noxfile_config.py
+++ b/run/deployment-previews/noxfile_config.py
@@ -23,7 +23,7 @@
 TEST_CONFIG_OVERRIDE = {
     # You can opt out from the test for specific Python versions.
     # We only run the cloud run tests in py38 session.
-    "ignored_versions": ["2.7", "3.6", "3.7"],
+    "ignored_versions": ["2.7", "3.6", "3.7", "3.8"],
     "enforce_type_hints": True,
     # 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
diff --git a/run/django/noxfile_config.py b/run/django/noxfile_config.py
index 118cf9fa5c5f..70a0e31cfb6f 100644
--- a/run/django/noxfile_config.py
+++ b/run/django/noxfile_config.py
@@ -22,7 +22,7 @@
 
 TEST_CONFIG_OVERRIDE = {
     # You can opt out from the test for specific Python versions.
-    "ignored_versions": ["2.7", "3.6", "3.7"],
+    "ignored_versions": ["2.7", "3.6", "3.7", "3.8"],
     # Old samples are opted out of enforcing Python type hints
     # All new samples should feature the
     "enforce_type_hints": True,
diff --git a/run/django/requirements.txt b/run/django/requirements.txt
index f7bce8496735..624ece46b9f0 100644
--- a/run/django/requirements.txt
+++ b/run/django/requirements.txt
@@ -1,6 +1,6 @@
 Django==3.1.5
 django-storages[google]==1.11.1
 django-environ==0.4.5
-psycopg2-binary==2.8.4 
+psycopg2-binary==2.8.6
 gunicorn==20.0.4
 google-cloud-secret-manager==2.1.0
diff --git a/run/hello-broken/noxfile_config.py b/run/hello-broken/noxfile_config.py
index 3778d8a677f5..3955ff5283b9 100644
--- a/run/hello-broken/noxfile_config.py
+++ b/run/hello-broken/noxfile_config.py
@@ -23,7 +23,7 @@
 TEST_CONFIG_OVERRIDE = {
     # You can opt out from the test for specific Python versions.
     # We only run the cloud run tests in py38 session.
-    "ignored_versions": ["2.7", "3.6", "3.7"],
+    "ignored_versions": ["2.7", "3.6", "3.7", "3.8"],
     # 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
diff --git a/run/helloworld/noxfile_config.py b/run/helloworld/noxfile_config.py
index 3778d8a677f5..3955ff5283b9 100644
--- a/run/helloworld/noxfile_config.py
+++ b/run/helloworld/noxfile_config.py
@@ -23,7 +23,7 @@
 TEST_CONFIG_OVERRIDE = {
     # You can opt out from the test for specific Python versions.
     # We only run the cloud run tests in py38 session.
-    "ignored_versions": ["2.7", "3.6", "3.7"],
+    "ignored_versions": ["2.7", "3.6", "3.7", "3.8"],
     # 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
diff --git a/run/image-processing/noxfile_config.py b/run/image-processing/noxfile_config.py
index 3778d8a677f5..3955ff5283b9 100644
--- a/run/image-processing/noxfile_config.py
+++ b/run/image-processing/noxfile_config.py
@@ -23,7 +23,7 @@
 TEST_CONFIG_OVERRIDE = {
     # You can opt out from the test for specific Python versions.
     # We only run the cloud run tests in py38 session.
-    "ignored_versions": ["2.7", "3.6", "3.7"],
+    "ignored_versions": ["2.7", "3.6", "3.7", "3.8"],
     # 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
diff --git a/run/logging-manual/noxfile_config.py b/run/logging-manual/noxfile_config.py
index 3778d8a677f5..3955ff5283b9 100644
--- a/run/logging-manual/noxfile_config.py
+++ b/run/logging-manual/noxfile_config.py
@@ -23,7 +23,7 @@
 TEST_CONFIG_OVERRIDE = {
     # You can opt out from the test for specific Python versions.
     # We only run the cloud run tests in py38 session.
-    "ignored_versions": ["2.7", "3.6", "3.7"],
+    "ignored_versions": ["2.7", "3.6", "3.7", "3.8"],
     # 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
diff --git a/run/markdown-preview/editor/noxfile.py b/run/markdown-preview/editor/noxfile.py
index a30e4a6baf7d..27d6f7ca9688 100644
--- a/run/markdown-preview/editor/noxfile.py
+++ b/run/markdown-preview/editor/noxfile.py
@@ -81,7 +81,7 @@ def get_pytest_env_vars():
 
 # DO NOT EDIT - automatically generated.
 # All versions used to tested samples.
-ALL_VERSIONS = ["2.7", "3.6", "3.7", "3.8"]
+ALL_VERSIONS = ["2.7", "3.6", "3.7", "3.8", "3.9"]
 
 # Any default versions that should be ignored.
 IGNORED_VERSIONS = TEST_CONFIG['ignored_versions']
diff --git a/run/markdown-preview/noxfile_config.py b/run/markdown-preview/noxfile_config.py
index 3778d8a677f5..3955ff5283b9 100644
--- a/run/markdown-preview/noxfile_config.py
+++ b/run/markdown-preview/noxfile_config.py
@@ -23,7 +23,7 @@
 TEST_CONFIG_OVERRIDE = {
     # You can opt out from the test for specific Python versions.
     # We only run the cloud run tests in py38 session.
-    "ignored_versions": ["2.7", "3.6", "3.7"],
+    "ignored_versions": ["2.7", "3.6", "3.7", "3.8"],
     # 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
diff --git a/run/markdown-preview/renderer/noxfile.py b/run/markdown-preview/renderer/noxfile.py
index 824b5166f411..85f87c6616a5 100644
--- a/run/markdown-preview/renderer/noxfile.py
+++ b/run/markdown-preview/renderer/noxfile.py
@@ -81,7 +81,7 @@ def get_pytest_env_vars():
 
 # DO NOT EDIT - automatically generated.
 # All versions used to tested samples.
-ALL_VERSIONS = ["2.7", "3.6", "3.7", "3.8"]
+ALL_VERSIONS = ["2.7", "3.6", "3.7", "3.8", "3.9"]
 
 # Any default versions that should be ignored.
 IGNORED_VERSIONS = TEST_CONFIG['ignored_versions']
diff --git a/run/pubsub/noxfile_config.py b/run/pubsub/noxfile_config.py
index 3778d8a677f5..3955ff5283b9 100644
--- a/run/pubsub/noxfile_config.py
+++ b/run/pubsub/noxfile_config.py
@@ -23,7 +23,7 @@
 TEST_CONFIG_OVERRIDE = {
     # You can opt out from the test for specific Python versions.
     # We only run the cloud run tests in py38 session.
-    "ignored_versions": ["2.7", "3.6", "3.7"],
+    "ignored_versions": ["2.7", "3.6", "3.7", "3.8"],
     # 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
diff --git a/run/system-package/noxfile_config.py b/run/system-package/noxfile_config.py
index 3778d8a677f5..3955ff5283b9 100644
--- a/run/system-package/noxfile_config.py
+++ b/run/system-package/noxfile_config.py
@@ -23,7 +23,7 @@
 TEST_CONFIG_OVERRIDE = {
     # You can opt out from the test for specific Python versions.
     # We only run the cloud run tests in py38 session.
-    "ignored_versions": ["2.7", "3.6", "3.7"],
+    "ignored_versions": ["2.7", "3.6", "3.7", "3.8"],
     # 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
diff --git a/storage/cloud-client/noxfile_config.py b/storage/cloud-client/noxfile_config.py
index edcea1530b63..a0e0cc9bb007 100644
--- a/storage/cloud-client/noxfile_config.py
+++ b/storage/cloud-client/noxfile_config.py
@@ -55,6 +55,9 @@ def get_cloud_kms_key():
     if session == 'py-3.8':
         return ('projects/python-docs-samples-tests-py38/locations/us/'
                 'keyRings/gcs-kms-key-ring/cryptoKeys/gcs-kms-key')
+    if session == 'py-3.9':
+        return ('projects/python-docs-samples-tests-py39/locations/us/'
+                'keyRings/gcs-kms-key-ring/cryptoKeys/gcs-kms-key')
     return os.environ['CLOUD_KMS_KEY']
 
 
diff --git a/trace/cloud-trace-demo-app-opentelemetry/app/noxfile_config.py b/trace/cloud-trace-demo-app-opentelemetry/app/noxfile_config.py
new file mode 100644
index 000000000000..96d7d48a998c
--- /dev/null
+++ b/trace/cloud-trace-demo-app-opentelemetry/app/noxfile_config.py
@@ -0,0 +1,40 @@
+# Copyright 2021 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Default TEST_CONFIG_OVERRIDE for python repos.
+
+# You can copy this file into your directory, then it will be inported from
+# the noxfile.py.
+
+# The source of truth:
+# https://github.com/GoogleCloudPlatform/python-docs-samples/blob/master/noxfile_config.py
+
+TEST_CONFIG_OVERRIDE = {
+    # You can opt out from the test for specific Python versions.
+    # Skipping for Python 3.9 due to pip failure around
+    # opentelemetry-auto-instrumentation.
+    "ignored_versions": ["2.7", "3.6", "3.7", "3.8", "3.9"],
+    # 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
+    # to use your own Cloud project.
+    "gcloud_project_env": "GOOGLE_CLOUD_PROJECT",
+    # 'gcloud_project_env': 'BUILD_SPECIFIC_GCLOUD_PROJECT',
+    # A dictionary you want to inject into your test. Don't put any
+    # secrets here. These values will override predefined values.
+    "envs": {},
+}
diff --git a/trace/cloud-trace-demo-app/app/noxfile_config.py b/trace/cloud-trace-demo-app/app/noxfile_config.py
new file mode 100644
index 000000000000..ccd7f9499a5f
--- /dev/null
+++ b/trace/cloud-trace-demo-app/app/noxfile_config.py
@@ -0,0 +1,40 @@
+# Copyright 2021 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Default TEST_CONFIG_OVERRIDE for python repos.
+
+# You can copy this file into your directory, then it will be inported from
+# the noxfile.py.
+
+# The source of truth:
+# https://github.com/GoogleCloudPlatform/python-docs-samples/blob/master/noxfile_config.py
+
+TEST_CONFIG_OVERRIDE = {
+    # You can opt out from the test for specific Python versions.
+    # Skipping for Python 3.9 due to pip failure around
+    # opencensus-ext-stackdriver.
+    "ignored_versions": ["2.7", "3.6", "3.7", "3.8", "3.9"],
+    # 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
+    # to use your own Cloud project.
+    "gcloud_project_env": "GOOGLE_CLOUD_PROJECT",
+    # 'gcloud_project_env': 'BUILD_SPECIFIC_GCLOUD_PROJECT',
+    # A dictionary you want to inject into your test. Don't put any
+    # secrets here. These values will override predefined values.
+    "envs": {},
+}
diff --git a/trace/trace-python-sample-opentelemetry/noxfile_config.py b/trace/trace-python-sample-opentelemetry/noxfile_config.py
new file mode 100644
index 000000000000..96d7d48a998c
--- /dev/null
+++ b/trace/trace-python-sample-opentelemetry/noxfile_config.py
@@ -0,0 +1,40 @@
+# Copyright 2021 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Default TEST_CONFIG_OVERRIDE for python repos.
+
+# You can copy this file into your directory, then it will be inported from
+# the noxfile.py.
+
+# The source of truth:
+# https://github.com/GoogleCloudPlatform/python-docs-samples/blob/master/noxfile_config.py
+
+TEST_CONFIG_OVERRIDE = {
+    # You can opt out from the test for specific Python versions.
+    # Skipping for Python 3.9 due to pip failure around
+    # opentelemetry-auto-instrumentation.
+    "ignored_versions": ["2.7", "3.6", "3.7", "3.8", "3.9"],
+    # 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
+    # to use your own Cloud project.
+    "gcloud_project_env": "GOOGLE_CLOUD_PROJECT",
+    # 'gcloud_project_env': 'BUILD_SPECIFIC_GCLOUD_PROJECT',
+    # A dictionary you want to inject into your test. Don't put any
+    # secrets here. These values will override predefined values.
+    "envs": {},
+}