feat: Add support for Python 3.14 (#1217)

Author: daniel-sanche

.cross_sync/transformers.py

@@ -71,18 +71,19 @@ def visit_FunctionDef(self, node):
         Replace function docstrings
         """
         docstring = ast.get_docstring(node)
-        if docstring and isinstance(node.body[0], ast.Expr) and isinstance(
-            node.body[0].value, ast.Str
-        ):
+        if docstring and isinstance(node.body[0], ast.Expr) \
+            and isinstance(node.body[0].value, ast.Constant) \
+            and isinstance(node.body[0].value.value, str) \
+        :
             for key_word, replacement in self.replacements.items():
                 docstring = docstring.replace(key_word, replacement)
-            node.body[0].value.s = docstring
+            node.body[0].value.value = docstring
         return self.generic_visit(node)
 
     def visit_Constant(self, node):
         """Replace string type annotations"""
         try:
-            node.s = self.replacements.get(node.s, node.s)
+            node.value = self.replacements.get(node.value, node.value)
         except TypeError:
             # ignore unhashable types (e.g. list)
             pass
@@ -264,7 +265,7 @@ def get_output_path(self, node):
                 for target in n.targets:
                     if isinstance(target, ast.Name) and target.id == self.FILE_ANNOTATION:
                         # return the output path
-                        return n.value.s.replace(".", "/") + ".py"
+                        return n.value.value.replace(".", "/") + ".py"
 
     def visit_Module(self, node):
         # look for __CROSS_SYNC_OUTPUT__ Assign statement

.github/.OwlBot.lock.yaml

@@ -13,5 +13,5 @@
 # limitations under the License.
 docker:
   image: gcr.io/cloud-devrel-public-resources/owlbot-python:latest
-  digest: sha256:5581906b957284864632cde4e9c51d1cc66b0094990b27e689132fe5cd036046
-# created: 2025-03-05
+  digest: sha256:4a9e5d44b98e8672e2037ee22bc6b4f8e844a2d75fcb78ea8a4b38510112abc6
+# created: 2025-10-07

.github/sync-repo-settings.yaml

@@ -29,9 +29,19 @@ branchProtectionRules:
   # List of required status check contexts that must pass for commits to be accepted to matching branches.
   requiredStatusCheckContexts:
     - 'Kokoro'
-    - 'Kokoro system-3.8'
+    - 'Kokoro system'
     - 'cla/google'
     - 'OwlBot Post Processor'
+    - 'lint'
+    - 'mypy'
+    - 'docs'
+    - 'docfx'
+    - 'unit-3.9'
+    - 'unit-3.10'
+    - 'unit-3.11'
+    - 'unit-3.12'
+    - 'unit-3.13'
+    - 'unit-3.14'
 # List of explicit permissions to add (additive only)
 permissionRules:
     # Team slug to add to repository permissions

.github/workflows/conformance.yaml

@@ -25,7 +25,7 @@ jobs:
     strategy:
       matrix:
         test-version: [ "v0.0.4" ]
-        py-version: [ 3.8 ]
+        py-version: [ 3.13 ]
         client-type: [ "async", "sync"]
         # None of the clients currently support reverse scans, execute query plan refresh, retry info, or routing cookie
         include:

.github/workflows/mypy.yml

@@ -12,7 +12,7 @@ jobs:
     - name: Setup Python
       uses: actions/setup-python@v5
       with:
-        python-version: "3.8"
+        python-version: "3.13"
     - name: Install nox
       run: |
         python -m pip install --upgrade setuptools pip wheel

.github/workflows/system_emulated.yml

@@ -17,7 +17,7 @@ jobs:
     - name: Setup Python
       uses: actions/setup-python@v5
       with:
-        python-version: '3.8'
+        python-version: '3.13'
 
     - name: Setup GCloud SDK
       uses: google-github-actions/setup-gcloud@v2.1.1

.github/workflows/unittest.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-22.04
     strategy:
       matrix:
-        python: ['3.7', '3.8', '3.9', '3.10', '3.11', '3.12', '3.13']
+        python: ['3.7', '3.8', '3.9', '3.10', '3.11', '3.12', '3.13', '3.14']
     steps:
     - name: Checkout
       uses: actions/checkout@v4

.kokoro/presubmit/system-3.8.cfg .kokoro/presubmit/system-3.9.cfg.kokoro/presubmit/system-3.8.cfg renamed to .kokoro/presubmit/system-3.9.cfg

@@ -3,5 +3,5 @@
 # Only run this nox session.
 env_vars: {
     key: "NOX_SESSION"
-    value: "system-3.8"
+    value: "system-3.9"
 }

.kokoro/presubmit/system.cfg

@@ -0,0 +1,7 @@
+# Format: //devtools/kokoro/config/proto/build.proto
+
+# Only run this nox session.
+env_vars: {
+    key: "NOX_SESSION"
+    value: "system-3.9"
+}

.kokoro/samples/python3.14/common.cfg

@@ -0,0 +1,40 @@
+# Format: //devtools/kokoro/config/proto/build.proto
+
+# Build logs will be here
+action {
+  define_artifacts {
+    regex: "**/*sponge_log.xml"
+  }
+}
+
+# Specify which tests to run
+env_vars: {
+    key: "RUN_TESTS_SESSION"
+    value: "py-3.14"
+}
+
+# Declare build specific Cloud project.
+env_vars: {
+    key: "BUILD_SPECIFIC_GCLOUD_PROJECT"
+    value: "python-docs-samples-tests-314"
+}
+
+env_vars: {
+    key: "TRAMPOLINE_BUILD_FILE"
+    value: "github/python-bigtable/.kokoro/test-samples.sh"
+}
+
+# Configure the docker image for kokoro-trampoline.
+env_vars: {
+    key: "TRAMPOLINE_IMAGE"
+    value: "gcr.io/cloud-devrel-kokoro-resources/python-samples-testing-docker"
+}
+
+# Download secrets for samples
+gfile_resources: "/bigstore/cloud-devrel-kokoro-resources/python-docs-samples"
+
+# Download trampoline resources.
+gfile_resources: "/bigstore/cloud-devrel-kokoro-resources/trampoline"
+
+# Use the trampoline script to run in docker.
+build_file: "python-bigtable/.kokoro/trampoline_v2.sh"