diff --git a/WORKSPACE b/WORKSPACE
index 60582d1a0f5..a9a8cfbba1b 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -18,33 +18,6 @@ register_toolchains(
     "//third_party/toolchains/bazel_0.23.2_rbe_windows:cc-toolchain-x64_windows",
 )
 
-git_repository(
-    name = "io_bazel_rules_python",
-    commit = "fdbb17a4118a1728d19e638a5291b4c4266ea5b8",
-    remote = "https://github.com/bazelbuild/rules_python.git",
-)
-
-load("@io_bazel_rules_python//python:pip.bzl", "pip_repositories", "pip_import")
-
-pip_import(
-    name = "grpc_python_dependencies",
-    requirements = "//:requirements.bazel.txt",
-)
-
-http_archive(
-    name = "cython",
-    build_file = "//third_party:cython.BUILD",
-    sha256 = "d68138a2381afbdd0876c3cb2a22389043fa01c4badede1228ee073032b07a27",
-    strip_prefix = "cython-c2b80d87658a8525ce091cbe146cb7eaa29fed5c",
-    urls = [
-        "https://github.com/cython/cython/archive/c2b80d87658a8525ce091cbe146cb7eaa29fed5c.tar.gz",
-    ],
-)
-
-load("//bazel:grpc_python_deps.bzl", "grpc_python_deps")
-
-grpc_python_deps()
-
 load("@bazel_toolchains//rules:rbe_repo.bzl", "rbe_autoconfig")
 
 # Create toolchain configuration for remote execution.
@@ -65,3 +38,19 @@ rbe_autoconfig(
         },
     ),
 )
+
+load("@com_github_grpc_grpc//bazel:grpc_python_deps.bzl", "grpc_python_deps")
+grpc_python_deps()
+
+
+load("@io_bazel_rules_python//python:pip.bzl", "pip_repositories", "pip_import")
+
+pip_import(
+    name = "grpc_python_dependencies",
+    requirements = "@com_github_grpc_grpc//:requirements.bazel.txt",
+)
+
+load("@io_bazel_rules_python//python:pip.bzl", "pip_repositories")
+load("@grpc_python_dependencies//:requirements.bzl", "pip_install")
+pip_repositories()
+pip_install()
diff --git a/bazel/grpc_python_deps.bzl b/bazel/grpc_python_deps.bzl
index 91438f3927b..4e7cc1537fa 100644
--- a/bazel/grpc_python_deps.bzl
+++ b/bazel/grpc_python_deps.bzl
@@ -1,8 +1,67 @@
-load("//third_party/py:python_configure.bzl", "python_configure")
-load("@io_bazel_rules_python//python:pip.bzl", "pip_repositories")
-load("@grpc_python_dependencies//:requirements.bzl", "pip_install")
+"""Load dependencies needed to compile and test the grpc python library as a 3rd-party consumer."""
+
+load("@bazel_tools//tools/build_defs/repo:git.bzl", "git_repository")
+load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+load("@com_github_grpc_grpc//third_party/py:python_configure.bzl", "python_configure")
 
 def grpc_python_deps():
+    native.bind(
+        name = "six",
+        actual = "@six_archive//:six",
+    )
+
+    # protobuf binds to the name "six", so we can't use it here.
+    # See https://github.com/bazelbuild/bazel/issues/1952 for why bind is
+    # horrible.
+    if "six_archive" not in native.existing_rules():
+        http_archive(
+            name = "six_archive",
+            strip_prefix = "six-1.12.0",
+            build_file = "@com_github_grpc_grpc//third_party:six.BUILD",
+            sha256 = "d16a0141ec1a18405cd4ce8b4613101da75da0e9a7aec5bdd4fa804d0e0eba73",
+            urls = ["https://files.pythonhosted.org/packages/dd/bf/4138e7bfb757de47d1f4b6994648ec67a51efe58fa907c1e11e350cddfca/six-1.12.0.tar.gz"],
+        )
+
+    if "enum34" not in native.existing_rules():
+        http_archive(
+            name = "enum34",
+            build_file = "@com_github_grpc_grpc//third_party:enum34.BUILD",
+            strip_prefix = "enum34-1.1.6",
+            sha256 = "8ad8c4783bf61ded74527bffb48ed9b54166685e4230386a9ed9b1279e2df5b1",
+            urls = ["https://files.pythonhosted.org/packages/bf/3e/31d502c25302814a7c2f1d3959d2a3b3f78e509002ba91aea64993936876/enum34-1.1.6.tar.gz"],
+        )
+
+    if "futures" not in native.existing_rules():
+        http_archive(
+            name = "futures",
+            build_file = "@com_github_grpc_grpc//third_party:futures.BUILD",
+            strip_prefix = "futures-3.3.0",
+            sha256 = "7e033af76a5e35f58e56da7a91e687706faf4e7bdfb2cbc3f2cca6b9bcda9794",
+            urls = ["https://files.pythonhosted.org/packages/47/04/5fc6c74ad114032cd2c544c575bffc17582295e9cd6a851d6026ab4b2c00/futures-3.3.0.tar.gz"],
+        )
+
+    if "io_bazel_rules_python" not in native.existing_rules():
+        git_repository(
+            name = "io_bazel_rules_python",
+            commit = "fdbb17a4118a1728d19e638a5291b4c4266ea5b8",
+            remote = "https://github.com/bazelbuild/rules_python.git",
+        )
+
     python_configure(name = "local_config_python")
-    pip_repositories()
-    pip_install()
+
+    native.bind(
+        name = "python_headers",
+        actual = "@local_config_python//:python_headers",
+    )
+
+    if "cython" not in native.existing_rules():
+        http_archive(
+            name = "cython",
+            build_file = "@com_github_grpc_grpc//third_party:cython.BUILD",
+            sha256 = "d68138a2381afbdd0876c3cb2a22389043fa01c4badede1228ee073032b07a27",
+            strip_prefix = "cython-c2b80d87658a8525ce091cbe146cb7eaa29fed5c",
+            urls = [
+                "https://github.com/cython/cython/archive/c2b80d87658a8525ce091cbe146cb7eaa29fed5c.tar.gz",
+            ],
+        )
+
diff --git a/bazel/python_rules.bzl b/bazel/python_rules.bzl
index 14550852a4a..eb4ac9c9721 100644
--- a/bazel/python_rules.bzl
+++ b/bazel/python_rules.bzl
@@ -1,6 +1,5 @@
 """Generates and compiles Python gRPC stubs from proto_library rules."""
 
-load("@grpc_python_dependencies//:requirements.bzl", "requirement")
 load(
     "//bazel:protobuf.bzl",
     "get_include_protoc_args",
@@ -36,56 +35,33 @@ def _generate_py_impl(context):
         for file in src[ProtoInfo].transitive_imports.to_list()
     ]
     proto_root = get_proto_root(context.label.workspace_root)
-    format_str = (_GENERATED_GRPC_PROTO_FORMAT if context.executable.plugin else _GENERATED_PROTO_FORMAT)
     out_files = [
         context.actions.declare_file(
             proto_path_to_generated_filename(
                 proto.basename,
-                format_str,
+                _GENERATED_PROTO_FORMAT,
             ),
         )
         for proto in protos
     ]
 
-    arguments = []
     tools = [context.executable._protoc]
-    if context.executable.plugin:
-        arguments += get_plugin_args(
-            context.executable.plugin,
-            context.attr.flags,
+    arguments = ([
+        "--python_out={}".format(
             context.genfiles_dir.path,
-            False,
-        )
-        tools += [context.executable.plugin]
-    else:
-        arguments += [
-            "--python_out={}:{}".format(
-                ",".join(context.attr.flags),
-                context.genfiles_dir.path,
-            ),
-        ]
-
-    arguments += get_include_protoc_args(includes)
-    arguments += [
+        ),
+    ] + get_include_protoc_args(includes) + [
         "--proto_path={}".format(context.genfiles_dir.path)
         for proto in protos
-    ]
+    ])
     for proto in protos:
         massaged_path = proto.path
         if massaged_path.startswith(context.genfiles_dir.path):
             massaged_path = proto.path[len(context.genfiles_dir.path) + 1:]
         arguments.append(massaged_path)
 
-    well_known_proto_files = []
-    if context.attr.well_known_protos:
-        well_known_proto_directory = context.attr.well_known_protos.files.to_list(
-        )[0].dirname
-
-        arguments += ["-I{}".format(well_known_proto_directory + "/../..")]
-        well_known_proto_files = context.attr.well_known_protos.files.to_list()
-
     context.actions.run(
-        inputs = protos + includes + well_known_proto_files,
+        inputs = protos + includes,
         tools = tools,
         outputs = out_files,
         executable = context.executable._protoc,
@@ -94,93 +70,155 @@ def _generate_py_impl(context):
     )
     return struct(files = depset(out_files))
 
-__generate_py = rule(
+_generate_pb2_src = rule(
     attrs = {
         "deps": attr.label_list(
             mandatory = True,
             allow_empty = False,
             providers = [ProtoInfo],
         ),
-        "plugin": attr.label(
-            executable = True,
-            providers = ["files_to_run"],
-            cfg = "host",
-        ),
-        "flags": attr.string_list(
-            mandatory = False,
-            allow_empty = True,
-        ),
-        "well_known_protos": attr.label(mandatory = False),
         "_protoc": attr.label(
             default = Label("//external:protocol_compiler"),
+            providers = ["files_to_run"],
             executable = True,
             cfg = "host",
         ),
     },
-    output_to_genfiles = True,
     implementation = _generate_py_impl,
 )
 
-def _generate_py(well_known_protos, **kwargs):
-    if well_known_protos:
-        __generate_py(
-            well_known_protos = "@com_google_protobuf//:well_known_protos",
-            **kwargs
-        )
-    else:
-        __generate_py(**kwargs)
-
 def py_proto_library(
         name,
-        deps,
-        well_known_protos = True,
-        proto_only = False,
+        srcs,
         **kwargs):
     """Generate python code for a protobuf.
 
     Args:
       name: The name of the target.
-      deps: A list of dependencies. Must contain a single element.
-      well_known_protos: A bool indicating whether or not to include well-known
-        protos.
-      proto_only: A bool indicating whether to generate vanilla protobuf code
-        or to also generate gRPC code.
+      srcs: A list of proto_library dependencies. Must contain a single element.
     """
-    if len(deps) > 1:
-        fail("The supported length of 'deps' is 1.")
-
     codegen_target = "_{}_codegen".format(name)
-    codegen_grpc_target = "_{}_grpc_codegen".format(name)
+    if len(srcs) > 1:
+        fail("Can only compile a single proto at a time.")
 
-    _generate_py(
+
+    _generate_pb2_src(
         name = codegen_target,
-        deps = deps,
-        well_known_protos = well_known_protos,
+        deps = srcs,
         **kwargs
     )
 
-    if not proto_only:
-        _generate_py(
-            name = codegen_grpc_target,
-            deps = deps,
-            plugin = "//src/compiler:grpc_python_plugin",
-            well_known_protos = well_known_protos,
-            **kwargs
-        )
+    native.py_library(
+        name = name,
+        srcs = [":{}".format(codegen_target)],
+        deps = ["@com_google_protobuf//:protobuf_python"],
+        **kwargs
+    )
 
-        native.py_library(
-            name = name,
-            srcs = [
-                ":{}".format(codegen_grpc_target),
-                ":{}".format(codegen_target),
-            ],
-            deps = [requirement("protobuf")],
-            **kwargs
-        )
-    else:
-        native.py_library(
-            name = name,
-            srcs = [":{}".format(codegen_target), ":{}".format(codegen_target)],
-            deps = [requirement("protobuf")],
-            **kwargs
+def _generate_pb2_grpc_src_impl(context):
+    protos = []
+    for src in context.attr.deps:
+        for file in src[ProtoInfo].direct_sources:
+            protos.append(_get_staged_proto_file(context, file))
+    includes = [
+        file
+        for src in context.attr.deps
+        for file in src[ProtoInfo].transitive_imports.to_list()
+    ]
+    proto_root = get_proto_root(context.label.workspace_root)
+    out_files = [
+        context.actions.declare_file(
+            proto_path_to_generated_filename(
+                proto.basename,
+                _GENERATED_GRPC_PROTO_FORMAT,
+            ),
         )
+        for proto in protos
+    ]
+
+    arguments = []
+    tools = [context.executable._protoc, context.executable._plugin]
+    arguments += get_plugin_args(
+        context.executable._plugin,
+        [],
+        context.genfiles_dir.path,
+        False,
+    )
+
+    arguments += get_include_protoc_args(includes)
+    arguments += [
+        "--proto_path={}".format(context.genfiles_dir.path)
+        for proto in protos
+    ]
+    for proto in protos:
+        massaged_path = proto.path
+        if massaged_path.startswith(context.genfiles_dir.path):
+            massaged_path = proto.path[len(context.genfiles_dir.path) + 1:]
+        arguments.append(massaged_path)
+
+    context.actions.run(
+        inputs = protos + includes,
+        tools = tools,
+        outputs = out_files,
+        executable = context.executable._protoc,
+        arguments = arguments,
+        mnemonic = "ProtocInvocation",
+    )
+    return struct(files = depset(out_files))
+
+
+_generate_pb2_grpc_src = rule(
+    attrs = {
+        "deps": attr.label_list(
+            mandatory = True,
+            allow_empty = False,
+            providers = [ProtoInfo],
+        ),
+        "_plugin": attr.label(
+            executable = True,
+            providers = ["files_to_run"],
+            cfg = "host",
+            default = Label("//src/compiler:grpc_python_plugin"),
+        ),
+        "_protoc": attr.label(
+            executable = True,
+            providers = ["files_to_run"],
+            cfg = "host",
+            default = Label("//external:protocol_compiler"),
+        ),
+    },
+    implementation = _generate_pb2_grpc_src_impl,
+)
+
+def py_grpc_library(
+    name,
+    srcs,
+    deps,
+    **kwargs):
+    """Generate python code for gRPC services defined in a protobuf.
+
+    Args:
+      name: The name of the target.
+      srcs: (List of `labels`) a single proto_library target containing the
+        schema of the service.
+      deps: (List of `labels`) a single py_proto_library target for the
+        proto_library in `srcs`.
+    """
+    codegen_grpc_target = "_{}_grpc_codegen".format(name)
+    if len(srcs) > 1:
+        fail("Can only compile a single proto at a time.")
+
+    _generate_pb2_grpc_src(
+        name = codegen_grpc_target,
+        deps = srcs,
+        **kwargs
+    )
+
+    native.py_library(
+        name = name,
+        srcs = [
+            ":{}".format(codegen_grpc_target),
+        ],
+        deps = [Label("//src/python/grpcio/grpc:grpcio")] + deps,
+        **kwargs
+    )
diff --git a/bazel/test/python_test_repo/.gitignore b/bazel/test/python_test_repo/.gitignore
new file mode 100644
index 00000000000..7146a250705
--- /dev/null
+++ b/bazel/test/python_test_repo/.gitignore
@@ -0,0 +1,2 @@
+bazel-*
+tools/bazel-*
diff --git a/bazel/test/python_test_repo/BUILD b/bazel/test/python_test_repo/BUILD
new file mode 100644
index 00000000000..ed4ffd3b74f
--- /dev/null
+++ b/bazel/test/python_test_repo/BUILD
@@ -0,0 +1,46 @@
+load("@com_github_grpc_grpc//bazel:python_rules.bzl", "py_proto_library", "py_grpc_library")
+
+package(default_testonly = 1)
+
+proto_library(
+    name = "helloworld_proto",
+    srcs = ["helloworld.proto"],
+    deps = [
+        "@com_google_protobuf//:duration_proto",
+        "@com_google_protobuf//:timestamp_proto",
+    ],
+)
+
+py_proto_library(
+    name = "helloworld_py_pb2",
+    srcs = [":helloworld_proto"],
+)
+
+py_grpc_library(
+    name = "helloworld_py_pb2_grpc",
+    srcs = [":helloworld_proto"],
+    deps = [":helloworld_py_pb2"],
+)
+
+py_proto_library(
+    name = "duration_py_pb2",
+    srcs = ["@com_google_protobuf//:duration_proto"],
+)
+
+py_proto_library(
+    name = "timestamp_py_pb2",
+    srcs = ["@com_google_protobuf//:timestamp_proto"],
+)
+
+py_test(
+    name = "import_test",
+    main = "helloworld.py",
+    srcs = ["helloworld.py"],
+    deps = [
+        ":helloworld_py_pb2",
+        ":helloworld_py_pb2_grpc",
+        ":duration_py_pb2",
+        ":timestamp_py_pb2",
+    ],
+    python_version = "PY3",
+)
diff --git a/bazel/test/python_test_repo/WORKSPACE b/bazel/test/python_test_repo/WORKSPACE
new file mode 100644
index 00000000000..69d34ac933c
--- /dev/null
+++ b/bazel/test/python_test_repo/WORKSPACE
@@ -0,0 +1,10 @@
+local_repository(
+    name = "com_github_grpc_grpc",
+    path = "../../..",
+)
+
+load("@com_github_grpc_grpc//bazel:grpc_deps.bzl", "grpc_deps")
+grpc_deps()
+
+load("@com_github_grpc_grpc//bazel:grpc_python_deps.bzl", "grpc_python_deps")
+grpc_python_deps()
diff --git a/bazel/test/python_test_repo/helloworld.proto b/bazel/test/python_test_repo/helloworld.proto
new file mode 100644
index 00000000000..b333a7409b8
--- /dev/null
+++ b/bazel/test/python_test_repo/helloworld.proto
@@ -0,0 +1,43 @@
+// Copyright 2019 The gRPC authors.
+//
+// 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.
+
+syntax = "proto3";
+
+option java_multiple_files = true;
+option java_package = "io.grpc.examples.helloworld";
+option java_outer_classname = "HelloWorldProto";
+option objc_class_prefix = "HLW";
+
+package helloworld;
+
+import "google/protobuf/timestamp.proto";
+import "google/protobuf/duration.proto";
+
+// The greeting service definition.
+service Greeter {
+  // Sends a greeting
+  rpc SayHello (HelloRequest) returns (HelloReply) {}
+}
+
+// The request message containing the user's name.
+message HelloRequest {
+  string name = 1;
+  google.protobuf.Timestamp request_initiation = 2;
+}
+
+// The response message containing the greetings
+message HelloReply {
+  string message = 1;
+  google.protobuf.Duration request_duration = 2;
+}
diff --git a/bazel/test/python_test_repo/helloworld.py b/bazel/test/python_test_repo/helloworld.py
new file mode 100644
index 00000000000..deee36a8f71
--- /dev/null
+++ b/bazel/test/python_test_repo/helloworld.py
@@ -0,0 +1,73 @@
+# Copyright 2019 the gRPC authors.
+#
+# 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.
+"""The Python implementation of the GRPC helloworld.Greeter client."""
+
+import contextlib
+import datetime
+import logging
+import unittest
+
+import grpc
+
+import duration_pb2
+import helloworld_pb2
+import helloworld_pb2_grpc
+
+_HOST = 'localhost'
+_SERVER_ADDRESS = '{}:0'.format(_HOST)
+
+
+class Greeter(helloworld_pb2_grpc.GreeterServicer):
+
+    def SayHello(self, request, context):
+        request_in_flight = datetime.now() - request.request_initation.ToDatetime()
+        request_duration = duration_pb2.Duration()
+        request_duration.FromTimedelta(request_in_flight)
+        return helloworld_pb2.HelloReply(
+                message='Hello, %s!' % request.name,
+                request_duration=request_duration,
+        )
+
+
+@contextlib.contextmanager
+def _listening_server():
+    server = grpc.server(futures.ThreadPoolExecutor())
+    helloworld_pb2_grpc.add_GreeterServicer_to_server(Greeter(), server)
+    port = server.add_insecure_port(_SERVER_ADDRESS)
+    server.start()
+    try:
+        yield port
+    finally:
+        server.stop(0)
+
+
+class ImportTest(unittest.TestCase):
+    def run():
+        with _listening_server() as port:
+            with grpc.insecure_channel('{}:{}'.format(_HOST, port)) as channel:
+                stub = helloworld_pb2_grpc.GreeterStub(channel)
+                request_timestamp = timestamp_pb2.Timestamp()
+                request_timestamp.GetCurrentTime()
+                response = stub.SayHello(helloworld_pb2.HelloRequest(
+                                            name='you',
+                                            request_initiation=request_timestamp,
+                                        ),
+                                         wait_for_ready=True)
+                self.assertEqual(response.message, "Hello, you!")
+                self.assertGreater(response.request_duration.microseconds, 0)
+
+
+if __name__ == '__main__':
+    logging.basicConfig()
+    unittest.main()
diff --git a/bazel/test/python_test_repo/tools/bazel b/bazel/test/python_test_repo/tools/bazel
new file mode 120000
index 00000000000..ad4a1267bcd
--- /dev/null
+++ b/bazel/test/python_test_repo/tools/bazel
@@ -0,0 +1 @@
+../../../../tools/bazel
\ No newline at end of file
diff --git a/examples/BUILD b/examples/BUILD
index a9dd94902a4..b3c5d0a825c 100644
--- a/examples/BUILD
+++ b/examples/BUILD
@@ -18,7 +18,8 @@ package(default_visibility = ["//visibility:public"])
 
 load("//bazel:grpc_build_system.bzl", "grpc_proto_library")
 load("//bazel:cc_grpc_library.bzl", "cc_grpc_library")
-load("//bazel:python_rules.bzl", "py_proto_library")
+load("//bazel:python_rules.bzl", "py_proto_library", "py_grpc_library")
+load("@grpc_python_dependencies//:requirements.bzl", "requirement")
 
 grpc_proto_library(
     name = "auth_sample",
@@ -60,13 +61,20 @@ grpc_proto_library(
 )
 
 proto_library(
-    name = "helloworld_proto_descriptor",
+    name = "protos/helloworld_proto",
     srcs = ["protos/helloworld.proto"],
 )
 
 py_proto_library(
-    name = "py_helloworld",
-    deps = [":helloworld_proto_descriptor"],
+    name = "helloworld_py_pb2",
+    srcs = [":protos/helloworld_proto"],
+    deps = [requirement('protobuf')],
+)
+
+py_grpc_library(
+    name = "helloworld_py_pb2_grpc",
+    srcs = [":protos/helloworld_proto"],
+    deps = [":helloworld_py_pb2"],
 )
 
 cc_binary(
diff --git a/examples/python/multiprocessing/BUILD b/examples/python/multiprocessing/BUILD
index f9fa6598068..257523f14bb 100644
--- a/examples/python/multiprocessing/BUILD
+++ b/examples/python/multiprocessing/BUILD
@@ -14,8 +14,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-load("@grpc_python_dependencies//:requirements.bzl", "requirement")
-load("//bazel:python_rules.bzl", "py_proto_library")
+load("//bazel:python_rules.bzl", "py_proto_library", "py_grpc_library")
 
 proto_library(
     name = "prime_proto",
@@ -24,8 +23,13 @@ proto_library(
 
 py_proto_library(
     name = "prime_proto_pb2",
-    deps = [":prime_proto"],
-    well_known_protos = False,
+    srcs = [":prime_proto"],
+)
+
+py_grpc_library(
+    name = "prime_proto_pb2_grpc",
+    srcs = [":prime_proto"],
+    deps = [":prime_proto_pb2"],
 )
 
 py_binary(
@@ -35,6 +39,7 @@ py_binary(
     deps = [
         "//src/python/grpcio/grpc:grpcio",
         ":prime_proto_pb2",
+        ":prime_proto_pb2_grpc",
     ],
     srcs_version = "PY3",
 )
@@ -45,9 +50,10 @@ py_binary(
     srcs = ["server.py"],
     deps = [
         "//src/python/grpcio/grpc:grpcio",
-        ":prime_proto_pb2"
+        ":prime_proto_pb2",
+        ":prime_proto_pb2_grpc",
     ] + select({
-        "//conditions:default": [requirement("futures")],
+        "//conditions:default": ["@futures//:futures"],
         "//:python3": [],
     }),
     srcs_version = "PY3",
diff --git a/examples/python/wait_for_ready/BUILD.bazel b/examples/python/wait_for_ready/BUILD.bazel
index 70daf83d334..f074ae7bb7f 100644
--- a/examples/python/wait_for_ready/BUILD.bazel
+++ b/examples/python/wait_for_ready/BUILD.bazel
@@ -20,7 +20,8 @@ py_library(
     srcs = ["wait_for_ready_example.py"],
     deps = [
         "//src/python/grpcio/grpc:grpcio",
-        "//examples:py_helloworld",
+        "//examples:helloworld_py_pb2",
+        "//examples:helloworld_py_pb2_grpc",
     ],
 )
 
diff --git a/src/proto/grpc/channelz/BUILD b/src/proto/grpc/channelz/BUILD
index 1d80ec23af1..5d1ec5a60cb 100644
--- a/src/proto/grpc/channelz/BUILD
+++ b/src/proto/grpc/channelz/BUILD
@@ -27,7 +27,15 @@ grpc_proto_library(
 
 proto_library(
     name = "channelz_proto_descriptors",
-    srcs = ["channelz.proto"],
+    srcs = [
+        "channelz.proto",
+    ],
+    deps = [
+        "@com_google_protobuf//:any_proto",
+        "@com_google_protobuf//:duration_proto",
+        "@com_google_protobuf//:timestamp_proto",
+        "@com_google_protobuf//:wrappers_proto",
+    ],
 )
 
 filegroup(
diff --git a/src/proto/grpc/testing/BUILD b/src/proto/grpc/testing/BUILD
index 212f0f3cca7..15be8227de1 100644
--- a/src/proto/grpc/testing/BUILD
+++ b/src/proto/grpc/testing/BUILD
@@ -16,7 +16,7 @@ licenses(["notice"])  # Apache v2
 
 load("//bazel:grpc_build_system.bzl", "grpc_proto_library", "grpc_package")
 load("@grpc_python_dependencies//:requirements.bzl", "requirement")
-load("//bazel:python_rules.bzl", "py_proto_library")
+load("//bazel:python_rules.bzl", "py_proto_library", "py_grpc_library")
 
 grpc_package(
     name = "testing",
@@ -75,8 +75,14 @@ proto_library(
 )
 
 py_proto_library(
-    name = "py_empty_proto",
-    deps = [":empty_proto_descriptor"],
+    name = "empty_py_pb2",
+    srcs = [":empty_proto_descriptor"],
+)
+
+py_grpc_library(
+    name = "empty_py_pb2_grpc",
+    srcs = [":empty_proto_descriptor"],
+    deps = [":empty_py_pb2"],
 )
 
 grpc_proto_library(
@@ -92,7 +98,13 @@ proto_library(
 
 py_proto_library(
     name = "py_messages_proto",
-    deps = [":messages_proto_descriptor"],
+    srcs = [":messages_proto_descriptor"],
+)
+
+py_grpc_library(
+    name = "messages_py_pb2_grpc",
+    srcs = [":messages_proto_descriptor"],
+    deps = [":py_messages_proto"],
 )
 
 grpc_proto_library(
@@ -196,7 +208,12 @@ proto_library(
 
 py_proto_library(
     name = "py_test_proto",
-    deps = [
-        ":test_proto_descriptor",
-    ],
+    srcs = [":test_proto_descriptor"],
+)
+
+py_grpc_library(
+    name = "test_py_pb2_grpc",
+    srcs = [":test_proto_descriptor"],
+    deps = [":py_test_proto"],
 )
+
diff --git a/src/proto/grpc/testing/proto2/BUILD.bazel b/src/proto/grpc/testing/proto2/BUILD.bazel
index e939c523a64..668d0a484ea 100644
--- a/src/proto/grpc/testing/proto2/BUILD.bazel
+++ b/src/proto/grpc/testing/proto2/BUILD.bazel
@@ -10,9 +10,7 @@ proto_library(
 
 py_proto_library(
     name = "empty2_proto",
-    deps = [
-        ":empty2_proto_descriptor",
-    ],
+    srcs = [":empty2_proto_descriptor"],
 )
 
 proto_library(
@@ -25,8 +23,6 @@ proto_library(
 
 py_proto_library(
     name = "empty2_extensions_proto",
-    deps = [
-        ":empty2_extensions_proto_descriptor",
-    ],
+    srcs = [":empty2_extensions_proto_descriptor"],
 )
 
diff --git a/src/python/grpcio/grpc/BUILD.bazel b/src/python/grpcio/grpc/BUILD.bazel
index a2bedae4bea..1b5a018249a 100644
--- a/src/python/grpcio/grpc/BUILD.bazel
+++ b/src/python/grpcio/grpc/BUILD.bazel
@@ -1,5 +1,3 @@
-load("@grpc_python_dependencies//:requirements.bzl", "requirement")
-
 package(default_visibility = ["//visibility:public"])
 
 py_library(
@@ -16,9 +14,9 @@ py_library(
         "//src/python/grpcio/grpc/_cython:cygrpc",
         "//src/python/grpcio/grpc/experimental",
         "//src/python/grpcio/grpc/framework",
-        requirement('six'),
+        "@six_archive//:six",
     ] + select({
-        "//conditions:default": [requirement('enum34'),],
+        "//conditions:default": ["@enum34//:enum34",],
         "//:python3": [],
     }),
     data = [
diff --git a/src/python/grpcio/grpc/experimental/BUILD.bazel b/src/python/grpcio/grpc/experimental/BUILD.bazel
index 6598d02747b..cd8afe533b6 100644
--- a/src/python/grpcio/grpc/experimental/BUILD.bazel
+++ b/src/python/grpcio/grpc/experimental/BUILD.bazel
@@ -1,4 +1,3 @@
-load("@grpc_python_dependencies//:requirements.bzl", "requirement")
 package(default_visibility = ["//visibility:public"])
 
 py_library(
diff --git a/src/python/grpcio/grpc/framework/common/BUILD.bazel b/src/python/grpcio/grpc/framework/common/BUILD.bazel
index 52fbb2b516c..c0d1486d537 100644
--- a/src/python/grpcio/grpc/framework/common/BUILD.bazel
+++ b/src/python/grpcio/grpc/framework/common/BUILD.bazel
@@ -1,4 +1,3 @@
-load("@grpc_python_dependencies//:requirements.bzl", "requirement")
 package(default_visibility = ["//visibility:public"])
 
 py_library(
@@ -14,7 +13,7 @@ py_library(
     name = "cardinality",
     srcs = ["cardinality.py"],
     deps = select({
-        "//conditions:default": [requirement('enum34'),],
+        "//conditions:default": ["@enum34//:enum34",],
         "//:python3": [],
     }),
 )
@@ -23,7 +22,7 @@ py_library(
     name = "style",
     srcs = ["style.py"],
     deps = select({
-        "//conditions:default": [requirement('enum34'),],
+        "//conditions:default": ["@enum34//:enum34",],
         "//:python3": [],
     }),
 )
diff --git a/src/python/grpcio/grpc/framework/foundation/BUILD.bazel b/src/python/grpcio/grpc/framework/foundation/BUILD.bazel
index a447ecded49..b539fa46da7 100644
--- a/src/python/grpcio/grpc/framework/foundation/BUILD.bazel
+++ b/src/python/grpcio/grpc/framework/foundation/BUILD.bazel
@@ -1,4 +1,3 @@
-load("@grpc_python_dependencies//:requirements.bzl", "requirement")
 package(default_visibility = ["//visibility:public"])
 
 py_library(
@@ -23,9 +22,9 @@ py_library(
     name = "callable_util",
     srcs = ["callable_util.py"],
     deps = [
-        requirement("six"),
+        "//external:six",
     ] + select({
-        "//conditions:default": [requirement('enum34'),],
+        "//conditions:default": ["@enum34//:enum34",],
         "//:python3": [],
     }),
 )
@@ -34,7 +33,7 @@ py_library(
     name = "future",
     srcs = ["future.py"],
     deps = [
-        requirement("six"),
+        "//external:six",
     ],
 )
 
@@ -42,7 +41,7 @@ py_library(
     name = "logging_pool",
     srcs = ["logging_pool.py"],
     deps = select({
-        "//conditions:default": [requirement('futures'),],
+        "//conditions:default": ["@futures//:futures",],
         "//:python3": [],
     }),
 )
@@ -59,6 +58,6 @@ py_library(
     name = "stream",
     srcs = ["stream.py"],
     deps = [
-        requirement("six"),
+        "//external:six",
     ],
 )
diff --git a/src/python/grpcio/grpc/framework/interfaces/base/BUILD.bazel b/src/python/grpcio/grpc/framework/interfaces/base/BUILD.bazel
index 35cfe877f34..5d0c06950a8 100644
--- a/src/python/grpcio/grpc/framework/interfaces/base/BUILD.bazel
+++ b/src/python/grpcio/grpc/framework/interfaces/base/BUILD.bazel
@@ -1,4 +1,3 @@
-load("@grpc_python_dependencies//:requirements.bzl", "requirement")
 package(default_visibility = ["//visibility:public"])
 
 py_library(
@@ -15,9 +14,9 @@ py_library(
     srcs = ["base.py"],
     deps = [
         "//src/python/grpcio/grpc/framework/foundation:abandonment",
-        requirement("six"),
+        "//external:six",
     ] + select({
-        "//conditions:default": [requirement('enum34'),],
+        "//conditions:default": ["@enum34//:enum34",],
         "//:python3": [],
     }),
 )
@@ -26,7 +25,7 @@ py_library(
     name = "utilities",
     srcs = ["utilities.py"],
     deps = select({
-        "//conditions:default": [requirement('enum34'),],
+        "//conditions:default": ["@enum34//:enum34",],
         "//:python3": [],
     }),
 )
diff --git a/src/python/grpcio/grpc/framework/interfaces/face/BUILD.bazel b/src/python/grpcio/grpc/framework/interfaces/face/BUILD.bazel
index 83fadb6372e..3af1404eade 100644
--- a/src/python/grpcio/grpc/framework/interfaces/face/BUILD.bazel
+++ b/src/python/grpcio/grpc/framework/interfaces/face/BUILD.bazel
@@ -1,4 +1,3 @@
-load("@grpc_python_dependencies//:requirements.bzl", "requirement")
 package(default_visibility = ["//visibility:public"])
 
 py_library(
@@ -16,9 +15,9 @@ py_library(
     deps = [
         "//src/python/grpcio/grpc/framework/foundation",
         "//src/python/grpcio/grpc/framework/common",
-        requirement("six"),
+        "//external:six",
     ] + select({
-        "//conditions:default": [requirement('enum34'),],
+        "//conditions:default": ["@enum34//:enum34",],
         "//:python3": [],
     }),
 )
diff --git a/src/python/grpcio_channelz/grpc_channelz/v1/BUILD.bazel b/src/python/grpcio_channelz/grpc_channelz/v1/BUILD.bazel
index eccc166577d..c0a7e3d3026 100644
--- a/src/python/grpcio_channelz/grpc_channelz/v1/BUILD.bazel
+++ b/src/python/grpcio_channelz/grpc_channelz/v1/BUILD.bazel
@@ -1,17 +1,23 @@
-load("//bazel:python_rules.bzl", "py_proto_library")
+load("//bazel:python_rules.bzl", "py_proto_library", "py_grpc_library")
 package(default_visibility = ["//visibility:public"])
 
 py_proto_library(
-    name = "py_channelz_proto",
-    well_known_protos = True,
-    deps = ["//src/proto/grpc/channelz:channelz_proto_descriptors"],
+    name = "channelz_py_pb2",
+    srcs = ["//src/proto/grpc/channelz:channelz_proto_descriptors"],
+)
+
+py_grpc_library(
+    name = "channelz_py_pb2_grpc",
+    srcs = ["//src/proto/grpc/channelz:channelz_proto_descriptors"],
+    deps = [":channelz_py_pb2"],
 )
 
 py_library(
     name = "grpc_channelz",
     srcs = ["channelz.py",],
     deps = [
-        ":py_channelz_proto",
+        ":channelz_py_pb2",
+        ":channelz_py_pb2_grpc",
         "//src/python/grpcio/grpc:grpcio",
     ],
     imports=["../../",],
diff --git a/src/python/grpcio_channelz/grpc_channelz/v1/channelz.py b/src/python/grpcio_channelz/grpc_channelz/v1/channelz.py
index 00eca311dc1..18810cab290 100644
--- a/src/python/grpcio_channelz/grpc_channelz/v1/channelz.py
+++ b/src/python/grpcio_channelz/grpc_channelz/v1/channelz.py
@@ -16,8 +16,12 @@
 import grpc
 from grpc._cython import cygrpc
 
-import grpc_channelz.v1.channelz_pb2 as _channelz_pb2
-import grpc_channelz.v1.channelz_pb2_grpc as _channelz_pb2_grpc
+try:
+    from src.python.grpcio_channelz.grpc_channelz.v1 import channelz_pb2 as _channelz_pb2
+    from src.python.grpcio_channelz.grpc_channelz.v1 import channelz_pb2_grpc as _channelz_pb2_grpc
+except ImportError:
+    import grpc_channelz.v1.channelz_pb2 as _channelz_pb2
+    import grpc_channelz.v1.channelz_pb2_grpc as _channelz_pb2_grpc
 
 from google.protobuf import json_format
 
diff --git a/src/python/grpcio_health_checking/grpc_health/v1/BUILD.bazel b/src/python/grpcio_health_checking/grpc_health/v1/BUILD.bazel
index 9e4fff34581..0ee176f0506 100644
--- a/src/python/grpcio_health_checking/grpc_health/v1/BUILD.bazel
+++ b/src/python/grpcio_health_checking/grpc_health/v1/BUILD.bazel
@@ -1,16 +1,23 @@
-load("//bazel:python_rules.bzl", "py_proto_library")
+load("//bazel:python_rules.bzl", "py_proto_library", "py_grpc_library")
 package(default_visibility = ["//visibility:public"])
 
 py_proto_library(
-    name = "py_health_proto",
-    deps = ["//src/proto/grpc/health/v1:health_proto_descriptor",],
+    name = "health_py_pb2",
+    srcs = ["//src/proto/grpc/health/v1:health_proto_descriptor",],
+)
+
+py_grpc_library(
+    name = "health_py_pb2_grpc",
+    srcs = ["//src/proto/grpc/health/v1:health_proto_descriptor",],
+    deps = [":health_py_pb2"],
 )
 
 py_library(
     name = "grpc_health",
     srcs = ["health.py",],
     deps = [
-        ":py_health_proto",
+        ":health_py_pb2",
+        ":health_py_pb2_grpc",
         "//src/python/grpcio/grpc:grpcio",
     ],
     imports=["../../",],
diff --git a/src/python/grpcio_health_checking/grpc_health/v1/health.py b/src/python/grpcio_health_checking/grpc_health/v1/health.py
index 15494fafdbc..93c1895df4c 100644
--- a/src/python/grpcio_health_checking/grpc_health/v1/health.py
+++ b/src/python/grpcio_health_checking/grpc_health/v1/health.py
@@ -18,8 +18,13 @@ import threading
 
 import grpc
 
-from grpc_health.v1 import health_pb2 as _health_pb2
-from grpc_health.v1 import health_pb2_grpc as _health_pb2_grpc
+# Import using an absolute path to ensure no duplicate loaded modules.
+try:
+    from src.python.grpcio_health_checking.grpc_health.v1 import health_pb2 as _health_pb2
+    from src.python.grpcio_health_checking.grpc_health.v1 import health_pb2_grpc as _health_pb2_grpc
+except ImportError:
+    from grpc_health.v1 import health_pb2 as _health_pb2
+    from grpc_health.v1 import health_pb2_grpc as _health_pb2_grpc
 
 SERVICE_NAME = _health_pb2.DESCRIPTOR.services_by_name['Health'].full_name
 
diff --git a/src/python/grpcio_reflection/grpc_reflection/v1alpha/BUILD.bazel b/src/python/grpcio_reflection/grpc_reflection/v1alpha/BUILD.bazel
index 6aaa4dd3bdd..49bc517caf1 100644
--- a/src/python/grpcio_reflection/grpc_reflection/v1alpha/BUILD.bazel
+++ b/src/python/grpcio_reflection/grpc_reflection/v1alpha/BUILD.bazel
@@ -1,20 +1,27 @@
-load("//bazel:python_rules.bzl", "py_proto_library")
+load("//bazel:python_rules.bzl", "py_proto_library", "py_grpc_library")
 load("@grpc_python_dependencies//:requirements.bzl", "requirement")
 
 package(default_visibility = ["//visibility:public"])
 
 py_proto_library(
-    name = "py_reflection_proto",
-    deps = ["//src/proto/grpc/reflection/v1alpha:reflection_proto_descriptor",],
+    name = "reflection_py_pb2",
+    srcs = ["//src/proto/grpc/reflection/v1alpha:reflection_proto_descriptor",],
+)
+
+py_grpc_library(
+    name = "reflection_py_pb2_grpc",
+    srcs = ["//src/proto/grpc/reflection/v1alpha:reflection_proto_descriptor",],
+    deps = ["reflection_py_pb2"],
 )
 
 py_library(
     name = "grpc_reflection",
     srcs = ["reflection.py",],
     deps = [
-        ":py_reflection_proto",
+        ":reflection_py_pb2",
+        ":reflection_py_pb2_grpc",
         "//src/python/grpcio/grpc:grpcio",
-        requirement('protobuf'),
+        "@com_google_protobuf//:protobuf_python",
     ],
     imports=["../../",],
 )
diff --git a/src/python/grpcio_reflection/grpc_reflection/v1alpha/reflection.py b/src/python/grpcio_reflection/grpc_reflection/v1alpha/reflection.py
index 6df1a364269..70c506c1c7d 100644
--- a/src/python/grpcio_reflection/grpc_reflection/v1alpha/reflection.py
+++ b/src/python/grpcio_reflection/grpc_reflection/v1alpha/reflection.py
@@ -17,8 +17,12 @@ import grpc
 from google.protobuf import descriptor_pb2
 from google.protobuf import descriptor_pool
 
-from grpc_reflection.v1alpha import reflection_pb2 as _reflection_pb2
-from grpc_reflection.v1alpha import reflection_pb2_grpc as _reflection_pb2_grpc
+try:
+    from src.python.grpcio_reflection.grpc_reflection.v1alpha import reflection_pb2 as _reflection_pb2
+    from src.python.grpcio_reflection.grpc_reflection.v1alpha import reflection_pb2_grpc as _reflection_pb2_grpc
+except ImportError:
+    from grpc_reflection.v1alpha import reflection_pb2 as _reflection_pb2
+    from grpc_reflection.v1alpha import reflection_pb2_grpc as _reflection_pb2_grpc
 
 _POOL = descriptor_pool.Default()
 SERVICE_NAME = _reflection_pb2.DESCRIPTOR.services_by_name[
diff --git a/src/python/grpcio_status/grpc_status/BUILD.bazel b/src/python/grpcio_status/grpc_status/BUILD.bazel
index 223a077c3f2..a7d47c9f34e 100644
--- a/src/python/grpcio_status/grpc_status/BUILD.bazel
+++ b/src/python/grpcio_status/grpc_status/BUILD.bazel
@@ -7,7 +7,7 @@ py_library(
     srcs = ["rpc_status.py",],
     deps = [
         "//src/python/grpcio/grpc:grpcio",
-        requirement('protobuf'),
+        "@com_google_protobuf//:protobuf_python",
         requirement('googleapis-common-protos'),
     ],
     imports=["../",],
diff --git a/src/python/grpcio_tests/tests/channelz/_channelz_servicer_test.py b/src/python/grpcio_tests/tests/channelz/_channelz_servicer_test.py
index 5265911a0be..bfe184107ec 100644
--- a/src/python/grpcio_tests/tests/channelz/_channelz_servicer_test.py
+++ b/src/python/grpcio_tests/tests/channelz/_channelz_servicer_test.py
@@ -18,9 +18,14 @@ import unittest
 from concurrent import futures
 
 import grpc
-from grpc_channelz.v1 import channelz
-from grpc_channelz.v1 import channelz_pb2
-from grpc_channelz.v1 import channelz_pb2_grpc
+try:
+    from src.python.grpcio_channelz.grpc_channelz.v1 import channelz
+    from src.python.grpcio_channelz.grpc_channelz.v1 import channelz_pb2
+    from src.python.grpcio_channelz.grpc_channelz.v1 import channelz_pb2_grpc
+except ImportError:
+    from grpc_channelz.v1 import channelz
+    from grpc_channelz.v1 import channelz_pb2
+    from grpc_channelz.v1 import channelz_pb2_grpc
 
 from tests.unit import test_common
 from tests.unit.framework.common import test_constants
diff --git a/src/python/grpcio_tests/tests/health_check/_health_servicer_test.py b/src/python/grpcio_tests/tests/health_check/_health_servicer_test.py
index 7a332b8390f..91e841a4d60 100644
--- a/src/python/grpcio_tests/tests/health_check/_health_servicer_test.py
+++ b/src/python/grpcio_tests/tests/health_check/_health_servicer_test.py
@@ -13,14 +13,22 @@
 # limitations under the License.
 """Tests of grpc_health.v1.health."""
 
+import logging
 import threading
 import time
 import unittest
 
 import grpc
-from grpc_health.v1 import health
-from grpc_health.v1 import health_pb2
-from grpc_health.v1 import health_pb2_grpc
+
+# Import using an absolute path to ensure no duplicate loaded modules.
+try:
+    from src.python.grpcio_health_checking.grpc_health.v1 import health
+    from src.python.grpcio_health_checking.grpc_health.v1 import health_pb2
+    from src.python.grpcio_health_checking.grpc_health.v1 import health_pb2_grpc
+except ImportError:
+    from grpc_health.v1 import health
+    from grpc_health.v1 import health_pb2
+    from grpc_health.v1 import health_pb2_grpc
 
 from tests.unit import test_common
 from tests.unit import thread_pool
@@ -276,4 +284,5 @@ class HealthServicerBackwardsCompatibleWatchTest(BaseWatchTests.WatchTests):
 
 
 if __name__ == '__main__':
+    logging.basicConfig()
     unittest.main(verbosity=2)
diff --git a/src/python/grpcio_tests/tests/interop/BUILD.bazel b/src/python/grpcio_tests/tests/interop/BUILD.bazel
index fd636556074..43fdc7ab462 100644
--- a/src/python/grpcio_tests/tests/interop/BUILD.bazel
+++ b/src/python/grpcio_tests/tests/interop/BUILD.bazel
@@ -31,9 +31,12 @@ py_library(
     deps = [
         "//src/python/grpcio/grpc:grpcio",
         "//src/python/grpcio_tests/tests:bazel_namespace_package_hack",
-        "//src/proto/grpc/testing:py_empty_proto",
+        "//src/proto/grpc/testing:empty_py_pb2",
+        "//src/proto/grpc/testing:empty_py_pb2_grpc",
         "//src/proto/grpc/testing:py_messages_proto",
+        "//src/proto/grpc/testing:messages_py_pb2_grpc",
         "//src/proto/grpc/testing:py_test_proto",
+        "//src/proto/grpc/testing:test_py_pb2_grpc",
         requirement("google-auth"),
         requirement("requests"),
         requirement("urllib3"),
@@ -59,7 +62,7 @@ py_library(
     srcs = ["service.py"],
     imports = ["../../"],
     deps = [
-        "//src/proto/grpc/testing:py_empty_proto",
+        "//src/proto/grpc/testing:empty_py_pb2",
         "//src/proto/grpc/testing:py_messages_proto",
         "//src/proto/grpc/testing:py_test_proto",
         "//src/python/grpcio/grpc:grpcio",
diff --git a/src/python/grpcio_tests/tests/reflection/BUILD.bazel b/src/python/grpcio_tests/tests/reflection/BUILD.bazel
index b635b721631..e9b56191df8 100644
--- a/src/python/grpcio_tests/tests/reflection/BUILD.bazel
+++ b/src/python/grpcio_tests/tests/reflection/BUILD.bazel
@@ -12,7 +12,7 @@ py_test(
         "//src/python/grpcio/grpc:grpcio",
         "//src/python/grpcio_reflection/grpc_reflection/v1alpha:grpc_reflection",
         "//src/python/grpcio_tests/tests/unit:test_common",
-        "//src/proto/grpc/testing:py_empty_proto",
+        "//src/proto/grpc/testing:empty_py_pb2",
         "//src/proto/grpc/testing/proto2:empty2_extensions_proto",
         "//src/proto/grpc/testing/proto2:empty2_proto",
         requirement('protobuf'),
diff --git a/src/python/grpcio_tests/tests/reflection/_reflection_servicer_test.py b/src/python/grpcio_tests/tests/reflection/_reflection_servicer_test.py
index 29bb292c913..1a1fdc83163 100644
--- a/src/python/grpcio_tests/tests/reflection/_reflection_servicer_test.py
+++ b/src/python/grpcio_tests/tests/reflection/_reflection_servicer_test.py
@@ -16,9 +16,14 @@
 import unittest
 
 import grpc
-from grpc_reflection.v1alpha import reflection
-from grpc_reflection.v1alpha import reflection_pb2
-from grpc_reflection.v1alpha import reflection_pb2_grpc
+try:
+    from src.python.grpcio_reflection.grpc_reflection.v1alpha import reflection
+    from src.python.grpcio_reflection.grpc_reflection.v1alpha import reflection_pb2
+    from src.python.grpcio_reflection.grpc_reflection.v1alpha import reflection_pb2_grpc
+except ImportError:
+    from grpc_reflection.v1alpha import reflection
+    from grpc_reflection.v1alpha import reflection_pb2
+    from grpc_reflection.v1alpha import reflection_pb2_grpc
 
 from google.protobuf import descriptor_pool
 from google.protobuf import descriptor_pb2
diff --git a/src/python/grpcio_tests/tests/unit/BUILD.bazel b/src/python/grpcio_tests/tests/unit/BUILD.bazel
index a161794f8be..cf4350a6beb 100644
--- a/src/python/grpcio_tests/tests/unit/BUILD.bazel
+++ b/src/python/grpcio_tests/tests/unit/BUILD.bazel
@@ -1,5 +1,3 @@
-load("@grpc_python_dependencies//:requirements.bzl", "requirement")
-
 package(default_visibility = ["//visibility:public"])
 
 GRPCIO_TESTS_UNIT = [
@@ -89,7 +87,7 @@ py_library(
             ":_tcp_proxy",
             "//src/python/grpcio_tests/tests/unit/framework/common",
             "//src/python/grpcio_tests/tests/testing",
-            requirement('six'),
+            "//external:six"
         ],
         imports=["../../",],
         data=[
diff --git a/third_party/BUILD b/third_party/BUILD
index 8b43d6b8300..cd4a6dad72b 100644
--- a/third_party/BUILD
+++ b/third_party/BUILD
@@ -8,4 +8,7 @@ exports_files([
     "zope_interface.BUILD",
     "constantly.BUILD",
     "cython.BUILD",
+    "six.BUILD",
+    "enum34.BUILD",
+    "futures.BUILD",
 ])
diff --git a/third_party/enum34.BUILD b/third_party/enum34.BUILD
new file mode 100644
index 00000000000..3fc2b3de571
--- /dev/null
+++ b/third_party/enum34.BUILD
@@ -0,0 +1,6 @@
+py_library(
+  name = "enum34",
+  srcs = ["enum/__init__.py"],
+  srcs_version = "PY2AND3",
+  visibility = ["//visibility:public"],
+)
diff --git a/third_party/futures.BUILD b/third_party/futures.BUILD
new file mode 100644
index 00000000000..c280e1edfd7
--- /dev/null
+++ b/third_party/futures.BUILD
@@ -0,0 +1,6 @@
+py_library(
+  name = "futures",
+  srcs = glob(["concurrent/**/*.py"]),
+  srcs_version = "PY2AND3",
+  visibility = ["//visibility:public"],
+)
diff --git a/third_party/six.BUILD b/third_party/six.BUILD
new file mode 100644
index 00000000000..60dc7811492
--- /dev/null
+++ b/third_party/six.BUILD
@@ -0,0 +1,6 @@
+py_library(
+    name = "six",
+    srcs = ["six.py"],
+    srcs_version = "PY2AND3",
+    visibility = ["//visibility:public"],
+)
diff --git a/tools/internal_ci/linux/grpc_python_bazel_test_in_docker.sh b/tools/internal_ci/linux/grpc_python_bazel_test_in_docker.sh
index d844cff7f9a..f33fd0f4f55 100755
--- a/tools/internal_ci/linux/grpc_python_bazel_test_in_docker.sh
+++ b/tools/internal_ci/linux/grpc_python_bazel_test_in_docker.sh
@@ -29,3 +29,6 @@ bazel test --spawn_strategy=standalone --genrule_strategy=standalone --test_outp
 bazel clean --expunge
 bazel test --config=python3 --spawn_strategy=standalone --genrule_strategy=standalone --test_output=errors //src/python/...
 bazel test --config=python3 --spawn_strategy=standalone --genrule_strategy=standalone --test_output=errors //examples/python/...
+(cd bazel/test/python_test_repo;
+  bazel test --test_output=errors //...
+)