Fix: Update Python versions (drop 3.7, 3.8 and add 3.13)

README.rst

@@ -52,11 +52,11 @@ dependencies.
 
 Supported Python Versions
 ^^^^^^^^^^^^^^^^^^^^^^^^^
-Python >= 3.7
+Python >= 3.9
 
 Unsupported Python Versions
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
-Python == 2.7, Python == 3.5, Python == 3.6.
+Python == 2.7, Python == 3.5, Python == 3.6, Python == 3.7, Python == 3.8.
 
 The last version of this library compatible with Python 2.7 and 3.5 is
 `google-cloud-bigquery==1.28.0`.

google/cloud/bigquery/__init__.py

@@ -126,12 +126,12 @@
 
 if sys_major == 3 and sys_minor in (7, 8):
     warnings.warn(
-        "The python-bigquery library will stop supporting Python 3.7 "
-        "and Python 3.8 in a future major release expected in Q4 2024. "
+        "The python-bigquery library no longer supports Python 3.7 "
+        "and Python 3.8. "
         f"Your Python version is {sys_major}.{sys_minor}.{sys_micro}. We "
         "recommend that you update soon to ensure ongoing support. For "
         "more details, see: [Google Cloud Client Libraries Supported Python Versions policy](https://cloud.google.com/python/docs/supported-python-versions)",
-        PendingDeprecationWarning,
+        DeprecationWarning,
     )
 
 __all__ = [

google/cloud/bigquery/external_config.py

@@ -22,6 +22,7 @@
 
 import base64
 import copy
+import typing
 from typing import Any, Dict, FrozenSet, Iterable, Optional, Union
 
 from google.cloud.bigquery._helpers import _to_bytes
@@ -835,11 +836,15 @@ def schema(self):
         See
         https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#ExternalDataConfiguration.FIELDS.schema
         """
+
         prop = self._properties.get("schema", {})
-        return [SchemaField.from_api_repr(field) for field in prop.get("fields", [])]
+        return [
+            SchemaField.from_api_repr(field)
+            for field in typing.cast(dict, prop).get("fields", [])
+        ]
 
     @schema.setter
-    def schema(self, value):
+    def schema(self, value: Union[list, dict, None]):
         prop = value
         if value is not None:
             prop = {"fields": [field.to_api_repr() for field in value]}

noxfile.py

@@ -24,7 +24,7 @@
 
 
 MYPY_VERSION = "mypy==1.6.1"
-PYTYPE_VERSION = "pytype==2021.4.9"
+PYTYPE_VERSION = "pytype==2024.9.13"
 BLACK_VERSION = "black==23.7.0"
 BLACK_PATHS = (
     "benchmark",
@@ -37,9 +37,9 @@
     "setup.py",
 )
 
-DEFAULT_PYTHON_VERSION = "3.8"
-SYSTEM_TEST_PYTHON_VERSIONS = ["3.8", "3.11", "3.12"]
-UNIT_TEST_PYTHON_VERSIONS = ["3.7", "3.8", "3.12"]
+DEFAULT_PYTHON_VERSION = "3.10"
+SYSTEM_TEST_PYTHON_VERSIONS = ["3.9", "3.12", "3.13"]  # oldest, two most recent
+UNIT_TEST_PYTHON_VERSIONS = ["3.9", "3.12", "3.13"]  # oldest, two most recent
 CURRENT_DIRECTORY = pathlib.Path(__file__).parent.absolute()
 
 
@@ -103,7 +103,8 @@ def default(session, install_extras=True):
         constraints_path,
     )
 
-    if install_extras and session.python in ["3.11", "3.12"]:
+    # Testing two highest versions with extras
+    if install_extras and session.python in UNIT_TEST_PYTHON_VERSIONS[-2:]:
         install_target = ".[bqstorage,ipywidgets,pandas,tqdm,opentelemetry]"
     elif install_extras:
         install_target = ".[all]"
@@ -136,6 +137,7 @@ def unit(session):
     default(session)
 
 
+# Testing lowest and highest with no extras
 @nox.session(python=[UNIT_TEST_PYTHON_VERSIONS[0], UNIT_TEST_PYTHON_VERSIONS[-1]])
 @_calculate_duration
 def unit_noextras(session):
@@ -149,7 +151,7 @@ def unit_noextras(session):
     # so that it continues to be an optional dependency.
     # https://github.com/googleapis/python-bigquery/issues/1877
     if session.python == UNIT_TEST_PYTHON_VERSIONS[0]:
-        session.install("pyarrow==1.0.0")
+        session.install("pyarrow==5.0.0")
 
     default(session, install_extras=False)
 
@@ -222,7 +224,7 @@ def system(session):
     # Resource Manager needed for test with a real Resource Tag.
     session.install("google-cloud-resource-manager", "-c", constraints_path)
 
-    if session.python in ["3.11", "3.12"]:
+    if session.python in SYSTEM_TEST_PYTHON_VERSIONS[-2]:  # two most recent
         extras = "[bqstorage,ipywidgets,pandas,tqdm,opentelemetry]"
     else:
         extras = "[all]"
@@ -266,8 +268,6 @@ def mypy_samples(session):
         "types-setuptools",
     )
 
-    session.install("typing-extensions")  # for TypedDict in pre-3.8 Python versions
-
     session.run(
         "mypy",
         "--config-file",
@@ -291,7 +291,8 @@ def snippets(session):
     session.install("google-cloud-storage", "-c", constraints_path)
     session.install("grpcio", "-c", constraints_path)
 
-    if session.python in ["3.11", "3.12"]:
+    # Testing snippets against two most recent versions
+    if session.python in UNIT_TEST_PYTHON_VERSIONS[-2:]:
         extras = "[bqstorage,ipywidgets,pandas,tqdm,opentelemetry]"
     else:
         extras = "[all]"

pyproject.toml

@@ -20,7 +20,7 @@ build-backend = "setuptools.build_meta"
 name = "google-cloud-bigquery"
 authors = [{ name = "Google LLC", email = "googleapis-packages@google.com" }]
 license = { text = "Apache 2.0" }
-requires-python = ">=3.7"
+requires-python = ">=3.9"
 description = "Google BigQuery API client library"
 readme = "README.rst"
 classifiers = [
@@ -33,12 +33,11 @@ classifiers = [
   "License :: OSI Approved :: Apache Software License",
   "Programming Language :: Python",
   "Programming Language :: Python :: 3",
-  "Programming Language :: Python :: 3.7",
-  "Programming Language :: Python :: 3.8",
   "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
   "Programming Language :: Python :: 3.12",
+  "Programming Language :: Python :: 3.13",
   "Operating System :: OS Independent",
   "Topic :: Internet",
 ]
@@ -76,7 +75,6 @@ pandas = [
   "pandas >= 1.1.0",
   "pyarrow >= 3.0.0",
   "db-dtypes >= 0.3.0, < 2.0.0dev",
-  "importlib_metadata >= 1.0.0; python_version < '3.8'",
 ]
 ipywidgets = ["ipywidgets >= 7.7.0", "ipykernel >= 6.0.0"]
 geopandas = ["geopandas >= 0.9.0, < 2.0dev", "Shapely >= 1.8.4, < 3.0.0dev"]

samples/desktopapp/user_credentials_test.py

@@ -13,7 +13,6 @@
 # limitations under the License.
 
 import os
-import sys
 from typing import Iterator, Union
 from unittest import mock
 
@@ -24,13 +23,7 @@
 
 PROJECT = os.environ["GOOGLE_CLOUD_PROJECT"]
 
-
-if sys.version_info >= (3, 8):
-    # Python 3.8+ has an AsyncMock attribute in unittest.mock, but 3.7 does not
-    MockType = Union[mock.MagicMock, mock.AsyncMock]
-else:
-    # Other definitions and imports
-    MockType = Union[mock.MagicMock]
+MockType = Union[mock.MagicMock, mock.AsyncMock]
 
 
 @pytest.fixture

samples/magics/conftest.py

@@ -18,7 +18,7 @@
 import pytest
 
 if typing.TYPE_CHECKING:
-    from IPython.core.interactiveshell import TerminalInteractiveShell
+    from IPython.terminal.interactiveshell import TerminalInteractiveShell
 
 interactiveshell = pytest.importorskip("IPython.terminal.interactiveshell")
 tools = pytest.importorskip("IPython.testing.tools")
@@ -40,5 +40,6 @@ def ipython_interactive(
 
     for the duration of the test scope.
     """
-    with ipython.builtin_trap:
-        yield ipython
+    if ipython.builtin_trap is not None:
+        with ipython.builtin_trap:
+            yield ipython

samples/notebooks/jupyter_tutorial_test.py

@@ -45,8 +45,10 @@ def ipython_interactive(
 
     for the duration of the test scope.
     """
-    with ipython.builtin_trap:
-        yield ipython
+
+    if ipython.builtin_trap is not None:
+        with ipython.builtin_trap:
+            yield ipython
 
 
 def _strip_region_tags(sample_text: str) -> str: