Support running multiprocessing example without Bazel

examples/python/multiprocessing/BUILD

@@ -44,6 +44,7 @@ py_binary(
         ":prime_proto_pb2_grpc",
         "//src/python/grpcio/grpc:grpcio",
     ],
+    imports = ["."],
 )
 
 py_binary(
@@ -60,6 +61,7 @@ py_binary(
         "//conditions:default": ["@futures//:futures"],
         "//:python3": [],
     }),
+    imports = ["."],
 )
 
 py_test(

examples/python/multiprocessing/README.md

@@ -64,3 +64,11 @@ For example,
 ```
 bazel run //examples/python/multiprocessing:client -- [::]:33915
 ```
+
+Alternatively, generate code using the following and then run the client and server
+directly:
+
+```python
+cd examples/python/helloworld
+python -m grpc_tools.protoc -I . prime.proto  --python_out=. --grpc_python_out=.
+```

examples/python/multiprocessing/client.py

@@ -26,8 +26,8 @@ import sys
 
 import grpc
 
-from examples.python.multiprocessing import prime_pb2
-from examples.python.multiprocessing import prime_pb2_grpc
+import prime_pb2
+import prime_pb2_grpc
 
 _PROCESS_COUNT = 8
 _MAXIMUM_CANDIDATE = 10000

examples/python/multiprocessing/server.py

@@ -29,8 +29,8 @@ import sys
 
 import grpc
 
-from examples.python.multiprocessing import prime_pb2
-from examples.python.multiprocessing import prime_pb2_grpc
+import prime_pb2
+import prime_pb2_grpc
 
 _LOGGER = logging.getLogger(__name__)