feat(spanner): drop support for python 3.9

packages/google-cloud-spanner/README.rst

@@ -62,14 +62,14 @@ Supported Python Versions
 Our client libraries are compatible with all current `active`_ and `maintenance`_ versions of
 Python.
 
-Python >= 3.9, including 3.14
+Python >= 3.10, including 3.14
 
 .. _active: https://devguide.python.org/devcycle/#in-development-main-branch
 .. _maintenance: https://devguide.python.org/devcycle/#maintenance-branches
 
 Unsupported Python Versions
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
-Python <= 3.8
+Python <= 3.9
 
 If you are using an `end-of-life`_
 version of Python, we recommend that you update as soon as possible to an actively supported version.

packages/google-cloud-spanner/docs/README.rst

@@ -62,14 +62,14 @@ Supported Python Versions
 Our client libraries are compatible with all current `active`_ and `maintenance`_ versions of
 Python.
 
-Python >= 3.9, including 3.14
+Python >= 3.10, including 3.14
 
 .. _active: https://devguide.python.org/devcycle/#in-development-main-branch
 .. _maintenance: https://devguide.python.org/devcycle/#maintenance-branches
 
 Unsupported Python Versions
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
-Python <= 3.8
+Python <= 3.9
 
 If you are using an `end-of-life`_
 version of Python, we recommend that you update as soon as possible to an actively supported version.

packages/google-cloud-spanner/google/cloud/spanner_admin_database_v1/__init__.py

@@ -21,13 +21,6 @@
 
 __version__ = package_version.__version__
 
-if sys.version_info >= (3, 8):  # pragma: NO COVER
-    from importlib import metadata
-else:  # pragma: NO COVER
-    # TODO(https://github.com/googleapis/python-api-core/issues/835): Remove
-    # this code path once we drop support for Python 3.7
-    import importlib_metadata as metadata
-
 
 from .services.database_admin import DatabaseAdminAsyncClient, DatabaseAdminClient
 from .types.backup import (
@@ -106,92 +99,18 @@
     api_core.check_python_version("google.cloud.spanner_admin_database_v1")  # type: ignore
     api_core.check_dependency_versions("google.cloud.spanner_admin_database_v1")  # type: ignore
 else:  # pragma: NO COVER
-    # An older version of api_core is installed which does not define the
-    # functions above. We do equivalent checks manually.
-    try:
-        import sys
-        import warnings
-
-        _py_version_str = sys.version.split()[0]
-        _package_label = "google.cloud.spanner_admin_database_v1"
-        if sys.version_info < (3, 9):
-            warnings.warn(
-                "You are using a non-supported Python version "
-                + f"({_py_version_str}).  Google will not post any further "
-                + f"updates to {_package_label} supporting this Python version. "
-                + "Please upgrade to the latest Python version, or at "
-                + f"least to Python 3.9, and then update {_package_label}.",
-                FutureWarning,
-            )
-        if sys.version_info[:2] == (3, 9):
-            warnings.warn(
-                f"You are using a Python version ({_py_version_str}) "
-                + f"which Google will stop supporting in {_package_label} in "
-                + "January 2026. Please "
-                + "upgrade to the latest Python version, or at "
-                + "least to Python 3.10, before then, and "
-                + f"then update {_package_label}.",
-                FutureWarning,
-            )
-
-        def parse_version_to_tuple(version_string: str):
-            """Safely converts a semantic version string to a comparable tuple of integers.
-            Example: "4.25.8" -> (4, 25, 8)
-            Ignores non-numeric parts and handles common version formats.
-            Args:
-                version_string: Version string in the format "x.y.z" or "x.y.z<suffix>"
-            Returns:
-                Tuple of integers for the parsed version string.
-            """
-            parts = []
-            for part in version_string.split("."):
-                try:
-                    parts.append(int(part))
-                except ValueError:
-                    # If it's a non-numeric part (e.g., '1.0.0b1' -> 'b1'), stop here.
-                    # This is a simplification compared to 'packaging.parse_version', but sufficient
-                    # for comparing strictly numeric semantic versions.
-                    break
-            return tuple(parts)
-
-        def _get_version(dependency_name):
-            try:
-                version_string: str = metadata.version(dependency_name)
-                parsed_version = parse_version_to_tuple(version_string)
-                return (parsed_version, version_string)
-            except Exception:
-                # Catch exceptions from metadata.version() (e.g., PackageNotFoundError)
-                # or errors during parse_version_to_tuple
-                return (None, "--")
+    import warnings
 
-        _dependency_package = "google.protobuf"
-        _next_supported_version = "4.25.8"
-        _next_supported_version_tuple = (4, 25, 8)
-        _recommendation = " (we recommend 6.x)"
-        (_version_used, _version_used_string) = _get_version(_dependency_package)
-        if _version_used and _version_used < _next_supported_version_tuple:
-            warnings.warn(
-                f"Package {_package_label} depends on "
-                + f"{_dependency_package}, currently installed at version "
-                + f"{_version_used_string}. Future updates to "
-                + f"{_package_label} will require {_dependency_package} at "
-                + f"version {_next_supported_version} or higher{_recommendation}."
-                + " Please ensure "
-                + "that either (a) your Python environment doesn't pin the "
-                + f"version of {_dependency_package}, so that updates to "
-                + f"{_package_label} can require the higher version, or "
-                + "(b) you manually update your Python environment to use at "
-                + f"least version {_next_supported_version} of "
-                + f"{_dependency_package}.",
-                FutureWarning,
-            )
-    except Exception:
+    _py_version_str = sys.version.split()[0]
+    # version-scanner: ignore-next-line
+    if sys.version_info < (3, 10):
         warnings.warn(
-            "Could not determine the version of Python "
-            + "currently being used. To continue receiving "
-            + "updates for {_package_label}, ensure you are "
-            + "using a supported version of Python; see "
-            + "https://devguide.python.org/versions/"
+            "You are using a non-supported Python version "
+            + f"({_py_version_str}).  Google will not post any further "
+            + "updates to google.cloud.spanner_admin_database_v1 supporting this Python version. "
+            + "Please upgrade to the latest Python version, or at "
+            + "least to Python 3.10, and then update google.cloud.spanner_admin_database_v1.",
+            FutureWarning,
         )
 
 __all__ = (

packages/google-cloud-spanner/google/cloud/spanner_admin_instance_v1/__init__.py

@@ -21,13 +21,6 @@
 
 __version__ = package_version.__version__
 
-if sys.version_info >= (3, 8):  # pragma: NO COVER
-    from importlib import metadata
-else:  # pragma: NO COVER
-    # TODO(https://github.com/googleapis/python-api-core/issues/835): Remove
-    # this code path once we drop support for Python 3.7
-    import importlib_metadata as metadata
-
 
 from .services.instance_admin import InstanceAdminAsyncClient, InstanceAdminClient
 from .types.common import FulfillmentPeriod, OperationProgress, ReplicaSelection
@@ -78,92 +71,18 @@
     api_core.check_python_version("google.cloud.spanner_admin_instance_v1")  # type: ignore
     api_core.check_dependency_versions("google.cloud.spanner_admin_instance_v1")  # type: ignore
 else:  # pragma: NO COVER
-    # An older version of api_core is installed which does not define the
-    # functions above. We do equivalent checks manually.
-    try:
-        import sys
-        import warnings
-
-        _py_version_str = sys.version.split()[0]
-        _package_label = "google.cloud.spanner_admin_instance_v1"
-        if sys.version_info < (3, 9):
-            warnings.warn(
-                "You are using a non-supported Python version "
-                + f"({_py_version_str}).  Google will not post any further "
-                + f"updates to {_package_label} supporting this Python version. "
-                + "Please upgrade to the latest Python version, or at "
-                + f"least to Python 3.9, and then update {_package_label}.",
-                FutureWarning,
-            )
-        if sys.version_info[:2] == (3, 9):
-            warnings.warn(
-                f"You are using a Python version ({_py_version_str}) "
-                + f"which Google will stop supporting in {_package_label} in "
-                + "January 2026. Please "
-                + "upgrade to the latest Python version, or at "
-                + "least to Python 3.10, before then, and "
-                + f"then update {_package_label}.",
-                FutureWarning,
-            )
-
-        def parse_version_to_tuple(version_string: str):
-            """Safely converts a semantic version string to a comparable tuple of integers.
-            Example: "4.25.8" -> (4, 25, 8)
-            Ignores non-numeric parts and handles common version formats.
-            Args:
-                version_string: Version string in the format "x.y.z" or "x.y.z<suffix>"
-            Returns:
-                Tuple of integers for the parsed version string.
-            """
-            parts = []
-            for part in version_string.split("."):
-                try:
-                    parts.append(int(part))
-                except ValueError:
-                    # If it's a non-numeric part (e.g., '1.0.0b1' -> 'b1'), stop here.
-                    # This is a simplification compared to 'packaging.parse_version', but sufficient
-                    # for comparing strictly numeric semantic versions.
-                    break
-            return tuple(parts)
-
-        def _get_version(dependency_name):
-            try:
-                version_string: str = metadata.version(dependency_name)
-                parsed_version = parse_version_to_tuple(version_string)
-                return (parsed_version, version_string)
-            except Exception:
-                # Catch exceptions from metadata.version() (e.g., PackageNotFoundError)
-                # or errors during parse_version_to_tuple
-                return (None, "--")
+    import warnings
 
-        _dependency_package = "google.protobuf"
-        _next_supported_version = "4.25.8"
-        _next_supported_version_tuple = (4, 25, 8)
-        _recommendation = " (we recommend 6.x)"
-        (_version_used, _version_used_string) = _get_version(_dependency_package)
-        if _version_used and _version_used < _next_supported_version_tuple:
-            warnings.warn(
-                f"Package {_package_label} depends on "
-                + f"{_dependency_package}, currently installed at version "
-                + f"{_version_used_string}. Future updates to "
-                + f"{_package_label} will require {_dependency_package} at "
-                + f"version {_next_supported_version} or higher{_recommendation}."
-                + " Please ensure "
-                + "that either (a) your Python environment doesn't pin the "
-                + f"version of {_dependency_package}, so that updates to "
-                + f"{_package_label} can require the higher version, or "
-                + "(b) you manually update your Python environment to use at "
-                + f"least version {_next_supported_version} of "
-                + f"{_dependency_package}.",
-                FutureWarning,
-            )
-    except Exception:
+    _py_version_str = sys.version.split()[0]
+    # version-scanner: ignore-next-line
+    if sys.version_info < (3, 10):
         warnings.warn(
-            "Could not determine the version of Python "
-            + "currently being used. To continue receiving "
-            + "updates for {_package_label}, ensure you are "
-            + "using a supported version of Python; see "
-            + "https://devguide.python.org/versions/"
+            "You are using a non-supported Python version "
+            + f"({_py_version_str}).  Google will not post any further "
+            + "updates to google.cloud.spanner_admin_instance_v1 supporting this Python version. "
+            + "Please upgrade to the latest Python version, or at "
+            + "least to Python 3.10, and then update google.cloud.spanner_admin_instance_v1.",
+            FutureWarning,
         )
 
 __all__ = (

packages/google-cloud-spanner/google/cloud/spanner_v1/_opentelemetry_tracing.py

@@ -19,10 +19,7 @@
 from datetime import datetime
 
 from opentelemetry import trace
-from opentelemetry.semconv.attributes.otel_attributes import (
-    OTEL_SCOPE_NAME,
-    OTEL_SCOPE_VERSION,
-)
+
 from opentelemetry.trace.status import Status, StatusCode
 
 from google.cloud.spanner_v1._helpers import (
@@ -99,9 +96,9 @@ def trace_call(
         "db.url": SpannerClient.DEFAULT_ENDPOINT,
         "db.instance": db_name,
         "net.host.name": SpannerClient.DEFAULT_ENDPOINT,
-        OTEL_SCOPE_NAME: TRACER_NAME,
+        "otel.scope.name": TRACER_NAME,
         "cloud.region": cloud_region,
-        OTEL_SCOPE_VERSION: TRACER_VERSION,
+        "otel.scope.version": TRACER_VERSION,
         # Standard GCP attributes for OTel, attributes are used for internal purpose and are subjected to change
         "gcp.client.service": "spanner",
         "gcp.client.version": TRACER_VERSION,

packages/google-cloud-spanner/noxfile.py

@@ -31,7 +31,6 @@
 SYSTEM_TEST_PYTHON_VERSIONS: List[str] = ["3.12"]
 
 ALL_PYTHON: List[str] = [
-    "3.9",
     "3.10",
     "3.11",
     "3.12",

packages/google-cloud-spanner/setup.py

@@ -39,12 +39,11 @@
     release_status = "Development Status :: 5 - Production/Stable"
 
 dependencies = [
-    "google-api-core[grpc] >= 1.34.0, <3.0.0,!=2.0.*,!=2.1.*,!=2.2.*,!=2.3.*,!=2.4.*,!=2.5.*,!=2.6.*,!=2.7.*,!=2.8.*,!=2.9.*,!=2.10.*",
-    "google-cloud-core >= 1.4.4, < 3.0.0",
+    "google-api-core[grpc] >= 2.19.0, <3.0.0",
+    "google-cloud-core >= 2.0.0, < 3.0.0",
     "grpc-google-iam-v1 >= 0.12.4, <1.0.0",
-    "proto-plus >= 1.22.0, <2.0.0",
+    "proto-plus >= 1.22.3, <2.0.0",
     "sqlparse >= 0.4.4",
-    "proto-plus >= 1.22.2, <2.0.0; python_version>='3.11'",
     "protobuf >= 4.25.8, < 8.0.0",
     "grpc-interceptor >= 0.15.4",
     # Make OpenTelemetry a core dependency
@@ -86,7 +85,6 @@
         "License :: OSI Approved :: Apache Software License",
         "Programming Language :: Python",
         "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",
         "Programming Language :: Python :: 3.12",
@@ -97,7 +95,7 @@
     ],
     platforms="Posix; MacOS X; Windows",
     packages=packages,
-    python_requires=">=3.9",
+    python_requires=">=3.10",
     install_requires=dependencies,
     extras_require=extras,
     include_package_data=True,

packages/google-cloud-spanner/testing/constraints-3.10.txt

@@ -1,10 +1,20 @@
-# -*- coding: utf-8 -*-
-# 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
-# cryptography is a direct dependency of google-auth
-cryptography
+# This constraints file is used to check that lower bounds
+# are correct in setup.py
+# List all library dependencies and extras in this file,
+# pinning their versions to their lower bounds.
+# For example, if setup.py has "google-cloud-foo >= 1.14.0, < 2.0.0",
+# then this file should have google-cloud-foo==1.14.0
+google-api-core==2.19.0
+google-cloud-core==2.0.0
+grpc-google-iam-v1==0.12.4
+proto-plus==1.22.3
+sqlparse==0.4.4
+protobuf==4.25.8
+grpc-interceptor==0.15.4
+opentelemetry-api==1.22.0
+opentelemetry-sdk==1.22.0
+opentelemetry-semantic-conventions==0.43b0
+opentelemetry-resourcedetector-gcp==1.8.0a0
+google-cloud-monitoring==2.16.0
+mmh3==4.1.0
+libcst==0.2.5