Python PyObjC_IdToPython(@protocol(NSURLSessionStreamDelegate))错误

当我尝试安装pyobjc-framework-Cocoa我看到这个错误：

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

解决方法:

我能够在以下环境中避免此问题：

Mac OS X 10.10.5  
pip8.1.2  
python3.4  

请尝试以下命令.

pip uninstall pyobjc-core
pip install 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,它应该顺利.

干杯！

标签：python,protocols,pyobjc
来源： https://codeday.me/bug/20190623/1268842.html