deps: drop support for Python 3.7 and 3.8

.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
+  digest: sha256:4db568eb8ccb6b40f355a1c971876c072b3b160ebade5d913bd29e7976ff7191
 # created: 2025-03-05

.github/sync-repo-settings.yaml

@@ -10,17 +10,16 @@ branchProtectionRules:
     - 'cla/google'
     - 'OwlBot Post Processor'
     - 'lint'
-    - 'Kokoro system-3.8'
+    - 'Kokoro system-3.9'
     - 'Kokoro system-3.11 (noextras)'
     - 'Kokoro system-3.13'
     - 'docs'
-    - 'unit (3.7)'
-    - 'unit (3.8)'
+    - 'unit (3.9)'
     - 'unit (3.12)'
     - 'unit (3.13)'
     - 'cover'
     - 'Samples - Lint'
-    - 'Samples - Python 3.8'
+    - 'Samples - Python 3.9'
     - 'Samples - Python 3.11'
     - 'Samples - Python 3.12'
 permissionRules:

.github/workflows/unittest.yml

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

CONTRIBUTING.rst

@@ -22,7 +22,7 @@ In order to add a feature:
   documentation.
 
 - The feature must work fully on the following CPython versions:
-  3.7, 3.8, 3.9, 3.11, 3.12 and 3.13 on both UNIX and Windows.
+  3.9, 3.11, 3.12 and 3.13 on both UNIX and Windows.
 
 - The feature must not add unnecessary dependencies (where
   "unnecessary" is of course subjective, but new dependencies should
@@ -148,7 +148,7 @@ Running System Tests
 
   .. note::
 
-      System tests are only configured to run under Python 3.8, 3.11, 3.12 and 3.13.
+      System tests are only configured to run under Python 3.9, 3.11, 3.12 and 3.13.
       For expediency, we do not run them in older versions of Python 3.
 
   This alone will not run the tests. You'll need to change some local
@@ -221,15 +221,11 @@ Supported Python Versions
 
 We support:
 
--  `Python 3.7`_
--  `Python 3.8`_
 -  `Python 3.9`_
 -  `Python 3.11`_
 -  `Python 3.12`_
 -  `Python 3.13`_
 
-.. _Python 3.7: https://docs.python.org/3.7/
-.. _Python 3.8: https://docs.python.org/3.8/
 .. _Python 3.9: https://docs.python.org/3.9/
 .. _Python 3.11: https://docs.python.org/3.11/
 .. _Python 3.12: https://docs.python.org/3.12/
@@ -241,7 +237,7 @@ Supported versions can be found in our ``noxfile.py`` `config`_.
 .. _config: https://github.com/googleapis/python-bigquery-magics/blob/main/noxfile.py
 
 
-We also explicitly decided to support Python 3 beginning with version 3.7.
+We also explicitly decided to support Python 3 beginning with version 3.9.
 Reasons for this include:
 
 -  Encouraging use of newest versions of Python 3

README.rst

@@ -52,11 +52,11 @@ dependencies.
 
 Supported Python Versions
 ^^^^^^^^^^^^^^^^^^^^^^^^^
-Python >= 3.7
+Python >= 3.9
 
 Unsupported Python Versions
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
-Python == 3.5, Python == 3.6.
+Python <= 3.8.
 
 
 Mac/Linux

owlbot.py

@@ -32,8 +32,6 @@
 extras_bf = ["bqstorage", "bigframes", "geopandas"]
 extras_spanner = ["spanner-graph-notebook"]
 extras_by_python = {
-    "3.7": extras_storage,
-    "3.8": extras_storage,
     "3.9": extras_bf,
     "3.10": extras_bf,
     # Use a middle version of Python to test when no extras are installed.
@@ -42,8 +40,8 @@
     "3.13": extras_bf,
 }
 templated_files = common.py_library(
-    unit_test_python_versions=["3.7", "3.8", "3.9", "3.11", "3.12", "3.13"],
-    system_test_python_versions=["3.8", "3.11", "3.12", "3.13"],
+    unit_test_python_versions=["3.9", "3.11", "3.12", "3.13"],
+    system_test_python_versions=["3.9", "3.11", "3.12", "3.13"],
     cov_level=100,
     unit_test_extras_by_python=extras_by_python,
     unit_test_external_dependencies=["google-cloud-testutils"],
@@ -52,6 +50,7 @@
         "pandas": "https://pandas.pydata.org/pandas-docs/stable/",
         "pydata-google-auth": "https://pydata-google-auth.readthedocs.io/en/latest/",
     },
+    default_python="3.10",
 )
 s.move(
     templated_files,
@@ -61,7 +60,6 @@
         "docs/multiprocessing.rst",
         "noxfile.py",
         "README.rst",
-        ".github/workflows/unittest.yml",
     ],
 )
 

setup.py

@@ -34,7 +34,7 @@
     "ipython>=7.23.1",
     "ipykernel>=5.5.6",
     "packaging >= 20.0.0",
-    "pandas>=1.1.0",
+    "pandas>=1.2.0",
     "pyarrow >= 3.0.0",
     "pydata-google-auth >=1.5.0",
     "tqdm >= 4.7.4, <5.0.0",
@@ -105,20 +105,19 @@
         "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",
     ],
     platforms="Posix; MacOS X; Windows",
     packages=packages,
     install_requires=dependencies,
     extras_require=extras,
-    python_requires=">=3.7",
+    python_requires=">=3.9",
     include_package_data=True,
     zip_safe=False,
 )

testing/constraints-3.9.txt

@@ -1,8 +1,17 @@
-# IMPORTANT: When Python 3.8 support is dropped, update these to
-# match the minimums in setup.py.
+# This constraints file is used to check that lower bounds
+# are correct in setup.py
+# List *all* library dependencies and extras in this file.
+# Pin the version to the lower bound.
 #
-# We try to test across major versions of our dependencies.
-# This is the last pandas 2.0.x release.
-pandas==2.0.3
-bigframes==1.17.0
-geopandas==1.0.1
+# e.g., if setup.py has "foo >= 1.14.0, < 2.0.0dev",
+# Then this file should have foo==1.14.0
+db-dtypes==0.3.0
+google-cloud-bigquery==3.13.0
+google-cloud-bigquery-storage==2.6.0
+ipywidgets==7.7.1
+ipython==7.23.1
+ipykernel==5.5.6
+pandas==1.2.0
+pyarrow==3.0.0
+pydata-google-auth==1.5.0
+tqdm==4.7.4