python3 grpc安装

gRPC Python is supported for use with Python 2.7 or Python 3.4 or higher.

Ensure you have pip version 9.0.1 or higher:

$ python -m pip install --upgrade pip

If you cannot upgrade pip due to a system-owned installation, you can run the example in a virtualenv:

$ python -m pip install virtualenv
$ virtualenv venv
$ source venv/bin/activate
$ python -m pip install --upgrade pip

Install gRPC

Install gRPC:

$ python -m pip install grpcio

Or, to install it system wide:

$ sudo python -m pip install grpcio

On El Capitan OSX, you may get the following error:

$ OSError: [Errno 1] Operation not permitted: '/tmp/pip-qwTLbI-uninstall/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/six-1.4.1-py2.7.egg-info'

You can work around this using:

$ python -m pip install grpcio --ignore-installed

Install gRPC tools

Python’s gRPC tools include the protocol buffer compiler protoc and the special plugin for generating server and client code from .proto service definitions. For the first part of our quickstart example, we’ve already generated the server and client stubs from helloworld.proto, but you’ll need the tools for the rest of our quickstart, as well as later tutorials and your own projects.

To install gRPC tools, run:

$ python -m pip install grpcio-tools googleapis-common-protos

Download the example

You’ll need a local copy of the example code to work through this quickstart. Download the example code from our Github repository (the following command clones the entire repository, but you just need the examples for this quickstart and other tutorials):

$ # Clone the repository to get the example code:
$ git clone -b v1.13.x https://github.com/grpc/grpc
$ # Navigate to the "hello, world" Python example:
$ cd grpc/examples/python/helloworld

Run a gRPC application

From the examples/python/helloworld directory:

1. Run the server

   $ python greeter_server.py
   

2. In another terminal, run the client

   $ python greeter_client.py
   

Congratulations! You’ve just run a client-server application with gRPC.

参考：https://grpc.io/docs/quickstart/python.html