googleapis · chalmerlowe · May 4, 2026 · May 1, 2026 · May 1, 2026 · May 1, 2026
@@ -79,8 +79,13 @@ case ${TEST_TYPE} in
            retval=$?
            ;;
        "3.9")
-            nox -s unit-3.9
-            retval=$?
+            if nox --list-sessions | grep -q "unit-3.9"; then
+                nox -s unit-3.9
+                retval=$?
+            else
+                echo "Skipping unit-3.9 as it is not supported by this package."
+                retval=0
+            fi
            ;;
        "3.10")
            nox -s unit-3.10

@@ -81,7 +81,7 @@ Declare them in Python using the :class:`~.RepeatedField` class:
        >>> row.values = [struct_pb2.Value(string_value="hello")]
        Traceback (most recent call last):
        File "<stdin>", line 1, in <module>
-        File "/usr/local/google/home/busunkim/github/python-automl/.nox/unit-3-8/lib/python3.8/site-packages/proto/message.py", line 543, in __setattr__
+        File "/usr/local/google/home/busunkim/github/python-automl/.nox/unit-3-10/lib/python3.10/site-packages/proto/message.py", line 543, in __setattr__
            self._pb.MergeFrom(self._meta.pb(**{key: pb_value}))
        TypeError: Value must be iterable


@@ -30,7 +30,6 @@
 DEFAULT_PYTHON_VERSION = "3.14"

 PYTHON_VERSIONS = [
-    "3.9",
    "3.10",
    "3.11",
    "3.12",

@@ -55,8 +55,7 @@ def __new__(mcls, name, bases, attrs):
        opts = attrs.pop(pb_options, {})
        # This is the only portable way to remove the _pb_options name
        # from the enum attrs.
-        # In 3.7 onwards, we can define an _ignore_ attribute and do some
-        # mucking around with that.
+        # TODO: Use _ignore_ attribute to ignore _pb_options (Issue #16911)
        if pb_options in attrs._member_names:
            if isinstance(attrs._member_names, list):
                idx = attrs._member_names.index(pb_options)

@@ -166,10 +166,10 @@ def __setitem__(self, key, value):
            else:  # Is an extended slice.
                indices = range(start, stop, step)

-                if len(value) != len(indices):  # XXX: Use PEP 572 on 3.8+
+                if (v_len := len(value)) != len(indices):
                    raise ValueError(
                        f"attempt to assign sequence of size "
-                        f"{len(value)} to extended slice of size "
+                        f"{v_len} to extended slice of size "
                        f"{len(indices)}"
                    )


@@ -20,7 +20,7 @@ build-backend = "setuptools.build_meta"
 name = "proto-plus"
 authors = [{ name = "Google LLC", email = "googleapis-packages@google.com" }]
 license = { text = "Apache 2.0" }
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 description = "Beautiful, Pythonic protocol buffers"
 readme = "README.rst"
 classifiers = [
@@ -29,7 +29,6 @@ classifiers = [
  "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",