Python PyObjC_IdToPython（@protocol（NSURLSessionStreamDelegate））错误

当我尝试安装pyobjc framework时，我看到以下错误：

In file included from Modules/_Foundation.m:15:
    Modules/_Foundation_protocols.m:14:28: error: cannot find protocol declaration for 'NSProgressReporting'
        p = PyObjC_IdToPython(@protocol(NSProgressReporting)); Py_XDECREF(p);
                           ^
    Modules/_Foundation_protocols.m:15:28: error: cannot find protocol declaration for 'NSURLSessionStreamDelegate'
        p = PyObjC_IdToPython(@protocol(NSURLSessionStreamDelegate)); Py_XDECREF(p);
                           ^
    2 errors generated.
    error: command '/usr/bin/clang' failed with exit status 1

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我能够在以下环境中避免该问题：

Mac OS X 10.10.5  
pip8.1.2  
python3.4  

请尝试以下命令

pip卸载pyobjc核心
pip安装pyobjc==3.0.4

问题的原因似乎是“pyobjc-core3.1.1”的交付错误。
如果在3.0.4中统一，它应该运行良好

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干杯

确保“pyobjc==3.0.4”中没有空格