feat: Add support for Python 3.14 (#14723)

Towards b/375664027

Author: parthea

packages/google-apps-script-type/noxfile.py

@@ -35,9 +35,15 @@
     "3.11",
     "3.12",
     "3.13",
+    "3.14",
 ]
 
-DEFAULT_PYTHON_VERSION = ALL_PYTHON[-1]
+DEFAULT_PYTHON_VERSION = "3.14"
+
+# TODO(https://github.com/googleapis/gapic-generator-python/issues/2450):
+# Switch this to Python 3.15 alpha1
+# https://peps.python.org/pep-0790/
+PREVIEW_PYTHON_VERSION = "3.14"
 
 CURRENT_DIRECTORY = pathlib.Path(__file__).parent.absolute()
 
@@ -57,7 +63,7 @@
 UNIT_TEST_EXTRAS: List[str] = []
 UNIT_TEST_EXTRAS_BY_PYTHON: Dict[str, List[str]] = {}
 
-SYSTEM_TEST_PYTHON_VERSIONS: List[str] = ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
+SYSTEM_TEST_PYTHON_VERSIONS: List[str] = ALL_PYTHON
 SYSTEM_TEST_STANDARD_DEPENDENCIES = [
     "mock",
     "pytest",
@@ -222,15 +228,22 @@ def install_unittest_dependencies(session, *constraints):
 def unit(session, protobuf_implementation):
     # Install all test dependencies, then install this package in-place.
 
-    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13"):
+    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
+    # Remove this check once support for Protobuf 3.x is dropped.
+    if protobuf_implementation == "cpp" and session.python in (
+        "3.11",
+        "3.12",
+        "3.13",
+        "3.14",
+    ):
         session.skip("cpp implementation is not supported in python 3.11+")
 
     constraints_path = str(
         CURRENT_DIRECTORY / "testing" / f"constraints-{session.python}.txt"
     )
     install_unittest_dependencies(session, "-c", constraints_path)
 
-    # TODO(https://github.com/googleapis/synthtool/issues/1976):
+    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
     # Remove the 'cpp' implementation once support for Protobuf 3.x is dropped.
     # The 'cpp' implementation requires Protobuf<4.
     if protobuf_implementation == "cpp":
@@ -420,7 +433,7 @@ def docfx(session):
     )
 
 
-@nox.session(python=DEFAULT_PYTHON_VERSION)
+@nox.session(python=PREVIEW_PYTHON_VERSION)
 @nox.parametrize(
     "protobuf_implementation",
     ["python", "upb", "cpp"],
@@ -433,7 +446,14 @@ def prerelease_deps(session, protobuf_implementation):
     `pip install --pre <package>`.
     """
 
-    if protobuf_implementation == "cpp" and session.python in ("3.11", "3.12", "3.13"):
+    # TODO(https://github.com/googleapis/gapic-generator-python/issues/2388):
+    # Remove this check once support for Protobuf 3.x is dropped.
+    if protobuf_implementation == "cpp" and session.python in (
+        "3.11",
+        "3.12",
+        "3.13",
+        "3.14",
+    ):
         session.skip("cpp implementation is not supported in python 3.11+")
 
     # Install all dependencies

packages/google-apps-script-type/setup.py

@@ -43,6 +43,8 @@
     # Exclude incompatible versions of `google-auth`
     # See https://github.com/googleapis/google-cloud-python/issues/12364
     "google-auth >= 2.14.1, <3.0.0,!=2.24.0,!=2.25.0",
+    "grpcio >= 1.33.2, < 2.0.0",
+    "grpcio >= 1.75.1, < 2.0.0; python_version >= '3.14'",
     "proto-plus >= 1.22.3, <2.0.0",
     "proto-plus >= 1.25.0, <2.0.0; python_version >= '3.13'",
     "protobuf>=3.20.2,<7.0.0,!=4.21.0,!=4.21.1,!=4.21.2,!=4.21.3,!=4.21.4,!=4.21.5",
@@ -84,6 +86,7 @@
         "Programming Language :: Python :: 3.11",
         "Programming Language :: Python :: 3.12",
         "Programming Language :: Python :: 3.13",
+        "Programming Language :: Python :: 3.14",
         "Operating System :: OS Independent",
         "Topic :: Internet",
     ],

packages/google-apps-script-type/testing/constraints-3.10.txt

@@ -2,5 +2,7 @@
 # This constraints file is required for unit tests.
 # List all library dependencies and extras in this file.
 google-api-core
+google-auth
+grpcio
 proto-plus
 protobuf

packages/google-apps-script-type/testing/constraints-3.11.txt

@@ -2,5 +2,7 @@
 # This constraints file is required for unit tests.
 # List all library dependencies and extras in this file.
 google-api-core
+google-auth
+grpcio
 proto-plus
 protobuf

packages/google-apps-script-type/testing/constraints-3.12.txt

@@ -2,5 +2,7 @@
 # This constraints file is required for unit tests.
 # List all library dependencies and extras in this file.
 google-api-core
+google-auth
+grpcio
 proto-plus
 protobuf

packages/google-apps-script-type/testing/constraints-3.13.txt

@@ -7,5 +7,6 @@
 # Then this file should have google-cloud-foo>=1
 google-api-core>=2
 google-auth>=2
+grpcio>=1
 proto-plus>=1
 protobuf>=6

packages/google-apps-script-type/testing/constraints-3.14.txt

@@ -0,0 +1,12 @@
+# We use the constraints file for the latest Python version
+# (currently this file) to check that the latest
+# major versions of dependencies are supported in setup.py.
+# List all library dependencies and extras in this file.
+# Require the latest major version be installed for each dependency.
+# e.g., if setup.py has "google-cloud-foo >= 1.14.0, < 2.0.0",
+# Then this file should have google-cloud-foo>=1
+google-api-core>=2
+google-auth>=2
+grpcio>=1
+proto-plus>=1
+protobuf>=6

packages/google-apps-script-type/testing/constraints-3.7.txt

@@ -6,5 +6,7 @@
 # Then this file should have google-cloud-foo==1.14.0
 google-api-core==1.34.1
 google-auth==2.14.1
+# TODO(https://github.com/googleapis/gapic-generator-python/issues/2453)
+# Add the minimum supported version of grpcio to constraints files
 proto-plus==1.22.3
 protobuf==3.20.2

packages/google-apps-script-type/testing/constraints-3.8.txt

@@ -2,5 +2,7 @@
 # This constraints file is required for unit tests.
 # List all library dependencies and extras in this file.
 google-api-core
+google-auth
+grpcio
 proto-plus
 protobuf

packages/google-apps-script-type/testing/constraints-3.9.txt

@@ -2,5 +2,7 @@
 # This constraints file is required for unit tests.
 # List all library dependencies and extras in this file.
 google-api-core
+google-auth
+grpcio
 proto-plus
 protobuf