diff --git a/tests/bootstrap_impls/BUILD.bazel b/tests/bootstrap_impls/BUILD.bazel
index 28a0d21fb7..b669da5669 100644
--- a/tests/bootstrap_impls/BUILD.bazel
+++ b/tests/bootstrap_impls/BUILD.bazel
@@ -13,7 +13,8 @@ load("@rules_shell//shell:sh_test.bzl", "sh_test")
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-load("//tests/support:sh_py_run_test.bzl", "py_reconfig_binary", "py_reconfig_test", "sh_py_run_test")
+load("//tests/support:py_reconfig.bzl", "py_reconfig_binary", "py_reconfig_test")
+load("//tests/support:sh_py_run_test.bzl", "sh_py_run_test")
 load("//tests/support:support.bzl", "SUPPORTS_BOOTSTRAP_SCRIPT")
 load(":venv_relative_path_tests.bzl", "relative_path_test_suite")
 
diff --git a/tests/bootstrap_impls/a/b/c/BUILD.bazel b/tests/bootstrap_impls/a/b/c/BUILD.bazel
index 8ffcbcd479..1659ef25bc 100644
--- a/tests/bootstrap_impls/a/b/c/BUILD.bazel
+++ b/tests/bootstrap_impls/a/b/c/BUILD.bazel
@@ -1,5 +1,5 @@
 load("//python/private:util.bzl", "IS_BAZEL_7_OR_HIGHER")  # buildifier: disable=bzl-visibility
-load("//tests/support:sh_py_run_test.bzl", "py_reconfig_test")
+load("//tests/support:py_reconfig.bzl", "py_reconfig_test")
 
 _SUPPORTS_BOOTSTRAP_SCRIPT = select({
     "@platforms//os:windows": ["@platforms//:incompatible"],
diff --git a/tests/interpreter/interpreter_tests.bzl b/tests/interpreter/interpreter_tests.bzl
index ad94f43423..3c5882afa0 100644
--- a/tests/interpreter/interpreter_tests.bzl
+++ b/tests/interpreter/interpreter_tests.bzl
@@ -14,7 +14,7 @@
 
 """This file contains helpers for testing the interpreter rule."""
 
-load("//tests/support:sh_py_run_test.bzl", "py_reconfig_test")
+load("//tests/support:py_reconfig.bzl", "py_reconfig_test")
 
 # The versions of Python that we want to run the interpreter tests against.
 PYTHON_VERSIONS_TO_TEST = (
diff --git a/tests/no_unsafe_paths/BUILD.bazel b/tests/no_unsafe_paths/BUILD.bazel
index f12d1c9a70..c9a681daa9 100644
--- a/tests/no_unsafe_paths/BUILD.bazel
+++ b/tests/no_unsafe_paths/BUILD.bazel
@@ -11,7 +11,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-load("//tests/support:sh_py_run_test.bzl", "py_reconfig_test")
+load("//tests/support:py_reconfig.bzl", "py_reconfig_test")
 load("//tests/support:support.bzl", "SUPPORTS_BOOTSTRAP_SCRIPT")
 
 py_reconfig_test(
diff --git a/tests/packaging/BUILD.bazel b/tests/packaging/BUILD.bazel
index bb12269e3d..d88a593006 100644
--- a/tests/packaging/BUILD.bazel
+++ b/tests/packaging/BUILD.bazel
@@ -14,7 +14,7 @@
 
 load("@bazel_skylib//rules:build_test.bzl", "build_test")
 load("@rules_pkg//pkg:tar.bzl", "pkg_tar")
-load("//tests/support:sh_py_run_test.bzl", "py_reconfig_test")
+load("//tests/support:py_reconfig.bzl", "py_reconfig_test")
 load("//tests/support:support.bzl", "SUPPORTS_BOOTSTRAP_SCRIPT")
 
 build_test(
diff --git a/tests/repl/BUILD.bazel b/tests/repl/BUILD.bazel
index 62c7377d53..b3986cc023 100644
--- a/tests/repl/BUILD.bazel
+++ b/tests/repl/BUILD.bazel
@@ -1,5 +1,5 @@
 load("//python:py_library.bzl", "py_library")
-load("//tests/support:sh_py_run_test.bzl", "py_reconfig_test")
+load("//tests/support:py_reconfig.bzl", "py_reconfig_test")
 
 # A library that adds a special import path only when this is specified as a
 # dependency. This makes it easy for a dependency to have this import path
diff --git a/tests/runtime_env_toolchain/BUILD.bazel b/tests/runtime_env_toolchain/BUILD.bazel
index ad2bd4eeb5..2f82d204ff 100644
--- a/tests/runtime_env_toolchain/BUILD.bazel
+++ b/tests/runtime_env_toolchain/BUILD.bazel
@@ -13,7 +13,7 @@
 # limitations under the License.
 
 load("@rules_python_runtime_env_tc_info//:info.bzl", "PYTHON_VERSION")
-load("//tests/support:sh_py_run_test.bzl", "py_reconfig_test")
+load("//tests/support:py_reconfig.bzl", "py_reconfig_test")
 load("//tests/support:support.bzl", "CC_TOOLCHAIN")
 load(":runtime_env_toolchain_tests.bzl", "runtime_env_toolchain_test_suite")
 
diff --git a/tests/support/py_reconfig.bzl b/tests/support/py_reconfig.bzl
new file mode 100644
index 0000000000..b33f679e77
--- /dev/null
+++ b/tests/support/py_reconfig.bzl
@@ -0,0 +1,101 @@
+# Copyright 2024 The Bazel Authors. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+"""Run a py_binary/py_test with altered config settings.
+
+This facilitates verify running binaries with different configuration settings
+without the overhead of a bazel-in-bazel integration test.
+"""
+
+load("//python/private:attr_builders.bzl", "attrb")  # buildifier: disable=bzl-visibility
+load("//python/private:py_binary_macro.bzl", "py_binary_macro")  # buildifier: disable=bzl-visibility
+load("//python/private:py_binary_rule.bzl", "create_py_binary_rule_builder")  # buildifier: disable=bzl-visibility
+load("//python/private:py_test_macro.bzl", "py_test_macro")  # buildifier: disable=bzl-visibility
+load("//python/private:py_test_rule.bzl", "create_py_test_rule_builder")  # buildifier: disable=bzl-visibility
+load("//tests/support:support.bzl", "VISIBLE_FOR_TESTING")
+
+def _perform_transition_impl(input_settings, attr, base_impl):
+    settings = {k: input_settings[k] for k in _RECONFIG_INHERITED_OUTPUTS if k in input_settings}
+    settings.update(base_impl(input_settings, attr))
+
+    settings[VISIBLE_FOR_TESTING] = True
+    settings["//command_line_option:build_python_zip"] = attr.build_python_zip
+    if attr.bootstrap_impl:
+        settings["//python/config_settings:bootstrap_impl"] = attr.bootstrap_impl
+    if attr.extra_toolchains:
+        settings["//command_line_option:extra_toolchains"] = attr.extra_toolchains
+    if attr.python_src:
+        settings["//python/bin:python_src"] = attr.python_src
+    if attr.repl_dep:
+        settings["//python/bin:repl_dep"] = attr.repl_dep
+    if attr.venvs_use_declare_symlink:
+        settings["//python/config_settings:venvs_use_declare_symlink"] = attr.venvs_use_declare_symlink
+    if attr.venvs_site_packages:
+        settings["//python/config_settings:venvs_site_packages"] = attr.venvs_site_packages
+    return settings
+
+_RECONFIG_INPUTS = [
+    "//python/config_settings:bootstrap_impl",
+    "//python/bin:python_src",
+    "//python/bin:repl_dep",
+    "//command_line_option:extra_toolchains",
+    "//python/config_settings:venvs_use_declare_symlink",
+    "//python/config_settings:venvs_site_packages",
+]
+_RECONFIG_OUTPUTS = _RECONFIG_INPUTS + [
+    "//command_line_option:build_python_zip",
+    VISIBLE_FOR_TESTING,
+]
+_RECONFIG_INHERITED_OUTPUTS = [v for v in _RECONFIG_OUTPUTS if v in _RECONFIG_INPUTS]
+
+_RECONFIG_ATTRS = {
+    "bootstrap_impl": attrb.String(),
+    "build_python_zip": attrb.String(default = "auto"),
+    "extra_toolchains": attrb.StringList(
+        doc = """
+Value for the --extra_toolchains flag.
+
+NOTE: You'll likely have to also specify //tests/support/cc_toolchains:all (or some CC toolchain)
+to make the RBE presubmits happy, which disable auto-detection of a CC
+toolchain.
+""",
+    ),
+    "python_src": attrb.Label(),
+    "repl_dep": attrb.Label(),
+    "venvs_site_packages": attrb.String(),
+    "venvs_use_declare_symlink": attrb.String(),
+}
+
+def _create_reconfig_rule(builder):
+    builder.attrs.update(_RECONFIG_ATTRS)
+
+    base_cfg_impl = builder.cfg.implementation()
+    builder.cfg.set_implementation(lambda *args: _perform_transition_impl(base_impl = base_cfg_impl, *args))
+    builder.cfg.update_inputs(_RECONFIG_INPUTS)
+    builder.cfg.update_outputs(_RECONFIG_OUTPUTS)
+    return builder.build()
+
+_py_reconfig_binary = _create_reconfig_rule(create_py_binary_rule_builder())
+
+_py_reconfig_test = _create_reconfig_rule(create_py_test_rule_builder())
+
+def py_reconfig_test(**kwargs):
+    """Create a py_test with customized build settings for testing.
+
+    Args:
+        **kwargs: kwargs to pass along to _py_reconfig_test.
+    """
+    py_test_macro(_py_reconfig_test, **kwargs)
+
+def py_reconfig_binary(**kwargs):
+    py_binary_macro(_py_reconfig_binary, **kwargs)
diff --git a/tests/support/sh_py_run_test.bzl b/tests/support/sh_py_run_test.bzl
index f6ebc506cc..1a61de9bd3 100644
--- a/tests/support/sh_py_run_test.bzl
+++ b/tests/support/sh_py_run_test.bzl
@@ -13,94 +13,14 @@
 # limitations under the License.
 """Run a py_binary with altered config settings in an sh_test.
 
-This facilitates verify running binaries with different configuration settings
-without the overhead of a bazel-in-bazel integration test.
+This facilitates verify running binaries with different outer environmental
+settings and verifying their output without the overhead of a bazel-in-bazel
+integration test.
 """
 
 load("@rules_shell//shell:sh_test.bzl", "sh_test")
-load("//python/private:attr_builders.bzl", "attrb")  # buildifier: disable=bzl-visibility
-load("//python/private:py_binary_macro.bzl", "py_binary_macro")  # buildifier: disable=bzl-visibility
-load("//python/private:py_binary_rule.bzl", "create_py_binary_rule_builder")  # buildifier: disable=bzl-visibility
-load("//python/private:py_test_macro.bzl", "py_test_macro")  # buildifier: disable=bzl-visibility
-load("//python/private:py_test_rule.bzl", "create_py_test_rule_builder")  # buildifier: disable=bzl-visibility
 load("//python/private:toolchain_types.bzl", "TARGET_TOOLCHAIN_TYPE")  # buildifier: disable=bzl-visibility
-load("//tests/support:support.bzl", "VISIBLE_FOR_TESTING")
-
-def _perform_transition_impl(input_settings, attr, base_impl):
-    settings = {k: input_settings[k] for k in _RECONFIG_INHERITED_OUTPUTS if k in input_settings}
-    settings.update(base_impl(input_settings, attr))
-
-    settings[VISIBLE_FOR_TESTING] = True
-    settings["//command_line_option:build_python_zip"] = attr.build_python_zip
-    if attr.bootstrap_impl:
-        settings["//python/config_settings:bootstrap_impl"] = attr.bootstrap_impl
-    if attr.extra_toolchains:
-        settings["//command_line_option:extra_toolchains"] = attr.extra_toolchains
-    if attr.python_src:
-        settings["//python/bin:python_src"] = attr.python_src
-    if attr.repl_dep:
-        settings["//python/bin:repl_dep"] = attr.repl_dep
-    if attr.venvs_use_declare_symlink:
-        settings["//python/config_settings:venvs_use_declare_symlink"] = attr.venvs_use_declare_symlink
-    if attr.venvs_site_packages:
-        settings["//python/config_settings:venvs_site_packages"] = attr.venvs_site_packages
-    return settings
-
-_RECONFIG_INPUTS = [
-    "//python/config_settings:bootstrap_impl",
-    "//python/bin:python_src",
-    "//python/bin:repl_dep",
-    "//command_line_option:extra_toolchains",
-    "//python/config_settings:venvs_use_declare_symlink",
-    "//python/config_settings:venvs_site_packages",
-]
-_RECONFIG_OUTPUTS = _RECONFIG_INPUTS + [
-    "//command_line_option:build_python_zip",
-    VISIBLE_FOR_TESTING,
-]
-_RECONFIG_INHERITED_OUTPUTS = [v for v in _RECONFIG_OUTPUTS if v in _RECONFIG_INPUTS]
-
-_RECONFIG_ATTRS = {
-    "bootstrap_impl": attrb.String(),
-    "build_python_zip": attrb.String(default = "auto"),
-    "extra_toolchains": attrb.StringList(
-        doc = """
-Value for the --extra_toolchains flag.
-
-NOTE: You'll likely have to also specify //tests/support/cc_toolchains:all (or some CC toolchain)
-to make the RBE presubmits happy, which disable auto-detection of a CC
-toolchain.
-""",
-    ),
-    "python_src": attrb.Label(),
-    "repl_dep": attrb.Label(),
-    "venvs_site_packages": attrb.String(),
-    "venvs_use_declare_symlink": attrb.String(),
-}
-
-def _create_reconfig_rule(builder):
-    builder.attrs.update(_RECONFIG_ATTRS)
-
-    base_cfg_impl = builder.cfg.implementation()
-    builder.cfg.set_implementation(lambda *args: _perform_transition_impl(base_impl = base_cfg_impl, *args))
-    builder.cfg.update_inputs(_RECONFIG_INPUTS)
-    builder.cfg.update_outputs(_RECONFIG_OUTPUTS)
-    return builder.build()
-
-_py_reconfig_binary = _create_reconfig_rule(create_py_binary_rule_builder())
-
-_py_reconfig_test = _create_reconfig_rule(create_py_test_rule_builder())
-
-def py_reconfig_test(**kwargs):
-    """Create a py_test with customized build settings for testing.
-
-    Args:
-        **kwargs: kwargs to pass along to _py_reconfig_test.
-    """
-    py_test_macro(_py_reconfig_test, **kwargs)
-
-def py_reconfig_binary(**kwargs):
-    py_binary_macro(_py_reconfig_binary, **kwargs)
+load(":py_reconfig.bzl", "py_reconfig_binary")
 
 def sh_py_run_test(*, name, sh_src, py_src, **kwargs):
     """Run a py_binary within a sh_test.
diff --git a/tests/toolchains/defs.bzl b/tests/toolchains/defs.bzl
index fbb70820c9..a883b0af33 100644
--- a/tests/toolchains/defs.bzl
+++ b/tests/toolchains/defs.bzl
@@ -15,7 +15,7 @@
 ""
 
 load("//python:versions.bzl", "PLATFORMS", "TOOL_VERSIONS")
-load("//tests/support:sh_py_run_test.bzl", "py_reconfig_test")
+load("//tests/support:py_reconfig.bzl", "py_reconfig_test")
 
 def define_toolchain_tests(name):
     """Define the toolchain tests.
diff --git a/tests/uv/lock/lock_tests.bzl b/tests/uv/lock/lock_tests.bzl
index 35c7c19328..1eb5b1d903 100644
--- a/tests/uv/lock/lock_tests.bzl
+++ b/tests/uv/lock/lock_tests.bzl
@@ -16,7 +16,7 @@
 
 load("@bazel_skylib//rules:native_binary.bzl", "native_test")
 load("//python/uv:lock.bzl", "lock")
-load("//tests/support:sh_py_run_test.bzl", "py_reconfig_test")
+load("//tests/support:py_reconfig.bzl", "py_reconfig_test")
 
 def lock_test_suite(name):
     """The test suite with various lock-related integration tests
diff --git a/tests/venv_site_packages_libs/BUILD.bazel b/tests/venv_site_packages_libs/BUILD.bazel
index 5d02708800..1f48331ff2 100644
--- a/tests/venv_site_packages_libs/BUILD.bazel
+++ b/tests/venv_site_packages_libs/BUILD.bazel
@@ -1,4 +1,4 @@
-load("//tests/support:sh_py_run_test.bzl", "py_reconfig_test")
+load("//tests/support:py_reconfig.bzl", "py_reconfig_test")
 load("//tests/support:support.bzl", "SUPPORTS_BOOTSTRAP_SCRIPT")
 
 py_reconfig_test(