From 90e0a993a4d04b29a0c2046abda19a8cd3fbd2e4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tim=20Swe=C3=B1a?= <swast@google.com>
Date: Wed, 8 Apr 2026 20:46:06 +0000
Subject: [PATCH] feat(bigquery-magics): drop support for Python 3.9

---
 packages/bigquery-magics/noxfile.py           | 13 ++++++---
 packages/bigquery-magics/setup.py             | 10 +++----
 .../testing/constraints-3.10.txt              | 27 ++++++++++++++-----
 .../testing/constraints-3.9.txt               | 18 -------------
 4 files changed, 36 insertions(+), 32 deletions(-)
 delete mode 100644 packages/bigquery-magics/testing/constraints-3.9.txt

diff --git a/packages/bigquery-magics/noxfile.py b/packages/bigquery-magics/noxfile.py
index 0b121f7de8b5..5dbe8aaf3e9a 100644
--- a/packages/bigquery-magics/noxfile.py
+++ b/packages/bigquery-magics/noxfile.py
@@ -35,12 +35,15 @@
 DEFAULT_PYTHON_VERSION = "3.14"
 
 UNIT_TEST_PYTHON_VERSIONS: List[str] = [
-    "3.9",
     "3.10",
     "3.11",
     "3.12",
     "3.13",
     "3.14",
+    # Not supported, but included so that we can explicitly skip the session
+    # from here. Keep unsupported versions last so that they don't conflict with
+    # the prerelease_deps session.
+    "3.9",
 ]
 
 UNIT_TEST_STANDARD_DEPENDENCIES = [
@@ -62,8 +65,6 @@
     ],
     "3.10": [
         "bqstorage",
-        "bigframes",
-        "geopandas",
     ],
     "3.11": [],
     "3.12": [
@@ -223,6 +224,9 @@ def install_unittest_dependencies(session, *constraints):
 
 @nox.session(python=UNIT_TEST_PYTHON_VERSIONS)
 def unit(session):
+    if session.python == "3.9":
+        session.skip("Python 3.9 is not supported.")
+
     # Install all test dependencies, then install this package in-place.
 
     constraints_path = str(
@@ -277,6 +281,9 @@ def install_systemtest_dependencies(session, with_extras, *constraints):
 @nox.parametrize("with_extras", [True, False])
 def system(session, with_extras):
     """Run the system test suite."""
+    if session.python == "3.9":
+        session.skip("Python 3.9 is not supported.")
+
     constraints_path = str(
         CURRENT_DIRECTORY / "testing" / f"constraints-{session.python}.txt"
     )
diff --git a/packages/bigquery-magics/setup.py b/packages/bigquery-magics/setup.py
index 27c496795ad8..aeb66b1ee6d2 100644
--- a/packages/bigquery-magics/setup.py
+++ b/packages/bigquery-magics/setup.py
@@ -28,16 +28,17 @@
 # 'Development Status :: 5 - Production/Stable'``
 release_status = "Development Status :: 4 - Beta"
 dependencies = [
-    "db-dtypes>=0.3.0,<2.0.0",
+    "db-dtypes>=1.1.1,<2.0.0",
     "google-cloud-bigquery >= 3.13.0, <4.0.0",
     "ipywidgets>=7.7.1",
     "ipython>=7.23.1",
     "ipykernel>=5.5.6",
     "packaging >= 20.0.0",
-    "pandas>=1.2.0",
-    "pyarrow >= 3.0.0",
+    "pandas>=1.5.3",
+    "pyarrow >= 12.0.0",
     "pydata-google-auth >=1.5.0",
     "tqdm >= 4.7.4, <5.0.0",
+    "pyopenssl >= 23.3.0",
 ]
 extras = {
     # bqstorage had a period where it was a required dependency, and has been
@@ -106,7 +107,6 @@
         "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",
@@ -119,7 +119,7 @@
     packages=packages,
     install_requires=dependencies,
     extras_require=extras,
-    python_requires=">=3.9",
+    python_requires=">=3.10",
     include_package_data=True,
     zip_safe=False,
 )
diff --git a/packages/bigquery-magics/testing/constraints-3.10.txt b/packages/bigquery-magics/testing/constraints-3.10.txt
index 2424012f54fe..71f1bc9dd36b 100644
--- a/packages/bigquery-magics/testing/constraints-3.10.txt
+++ b/packages/bigquery-magics/testing/constraints-3.10.txt
@@ -1,6 +1,21 @@
-# IMPORTANT: When Python 3.9 support is dropped, update these to
-# match the minimums in setup.py.
-# This is the last pandas 2.0.x release.
-pandas==2.0.3
-bigframes==1.17.0
-geopandas==1.0.1
\ No newline at end of file
+# 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.
+#
+# e.g., if setup.py has "foo >= 1.14.0, < 2.0.0dev",
+# Then this file should have foo==1.14.0
+db-dtypes==1.1.1
+geopandas==1.0.1
+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
+numpy==1.26.4
+packaging==20.0.0
+pandas==1.5.3
+pyarrow==12.0.0
+pydata-google-auth==1.5.0
+pyopenssl==23.3.0
+tqdm==4.7.4
diff --git a/packages/bigquery-magics/testing/constraints-3.9.txt b/packages/bigquery-magics/testing/constraints-3.9.txt
deleted file mode 100644
index fb4db5b80a74..000000000000
--- a/packages/bigquery-magics/testing/constraints-3.9.txt
+++ /dev/null
@@ -1,18 +0,0 @@
-# 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.
-#
-# 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
-packaging==20.0.0
-pandas==1.2.0
-pyarrow==3.0.0
-pydata-google-auth==1.5.0
-tqdm==4.7.4