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使用自定义 python 插件编译 protobuf 文件时遇到问题。在一台机器上,它按预期运行,而在另一台机器上,这会导致以下错误:

 Traceback (most recent call last):
      File "C:\...\my_plugin.py", line 14, in <module>
        from google.protobuf.compiler import plugin_pb2 as plugin
      File "C:\Python27\lib\site-packages\google\protobuf\compiler\plugin_pb2.py", line 255, in <module>
        DESCRIPTOR._options = _descriptor._ParseOptions(descriptor_pb2.FileOptions(), _b('\n\034com.google.protobuf.compilerB\014PluginProtosZ\tplugin_go'))
      File "C:\Python27\lib\site-packages\google\protobuf\descriptor.py", line 869, in _ParseOptions
        message.ParseFromString(string)
      File "C:\Python27\lib\site-packages\google\protobuf\message.py", line 185, in ParseFromString
        self.MergeFromString(serialized)
      File "C:\Python27\lib\site-packages\google\protobuf\internal\python_message.py", line 1062, in MergeFromString
        if self._InternalParse(serialized, 0, length) != length:
      File "C:\Python27\lib\site-packages\google\protobuf\internal\python_message.py", line 1084, in InternalParse
        (tag_bytes, new_pos) = local_ReadTag(buffer, pos)
      File "C:\Python27\lib\site-packages\google\protobuf\internal\decoder.py", line 181, in ReadTag
        while six.indexbytes(buffer, pos) & 0x80:
    AttributeError: 'module' object has no attribute 'indexbytes'
    --my_plugin_out: protoc-gen-my_plugin: Plugin failed with status code

两台机器都有相同的 Python 版本:2.7.12。

我还确保它们具有相同的 Protobuf 模块版本 (3.2.0) 和六个模块版本 (1.10.0)。

所以我不明白为什么“六”模块会错过上面调用堆栈中提到的“decoder.py”中所需的“indexbytes”方法。

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1 回答 1

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我无法找到根本原因,但似乎 Python 模块之间存在一些冲突,因为使用 virtualenv 解决了我的问题。见https://virtualenv.pypa.io/en/stable/userguide/

于 2017-03-09T14:27:39.133 回答