We use Python 3.x in our projects. But the official client of Protocol Buffers only supports python 2.x.
I don't want to downgrade to python 2.x.
UPDATE 2: Python 3.x is natively supported as of version 3.0.0.
You can see versions released on GitHub here: https://github.com/protocolbuffers/protobuf/releases
UPDATE: The stable version of protobuf, 2.6.1, does not support Python 3.x. However, the newer 3.0.0 release (still in beta) supports Python 3.x. You can see versions released on PyPi here:
https://pypi.python.org/pypi/protobuf
No, there isn't. There is a discussion on the protobuf google group about Python 3.X support. It indicates that Google wants to keep support for Python 2.4, so porting to Python 3.X is not easy. If the project branches or can drop support for Python 2.4 and 2.5, it would be a lot easier to port.
Here is the newer fork of most recent version of protobuf (2.5.0 + arm64 patches) at the moment that supports Python 3 and still backward compatible with Python 2.4: https://github.com/GreatFruitOmsk/protobuf-py3
The latest version of Google Protocol Buffers (2.6) added Python 3 support. I suggest using that.
EDIT: Nevermind. They lied in their release notes.
There is a compatible implantation for python 3.x. https://github.com/openx/python3-protobuf
This package should be the alpha version of Python 3 Protocol Buffer by Google.
Google's official library has supported Python 3 since version 3.0 (Jul 29, 2016).
来源：https://stackoverflow.com/questions/8663468/is-there-any-way-to-access-protocol-buffers-with-python-3-x