Normal，You will encounter this error when installing a Python package，This package must be a package containing C ++ code。
This is due to incompatibility after macOS update，In General，The maintainer of this package should already be compatible with this particular situation：
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if platform.system() == 'Darwin': extra_compile_args += ['-mmacosx-version-min=10.7', '-stdlib=libc++'] |
So on macOS[……]
Recently doing text statistics，Implemented in Python，Encountered an interesting problem-how to save statistical results。
Writing directly into memory is really impossible，Memory exhausted after ten hours，The program was forced to close。If you write directly to the database，Each write is too slow，It's been more than ten hours，If you go on like this, you will have to count on the week，Not a solution。
At last，I thought of a solution that does both[……]
In Safari 9 before，We just download a safariextz file and double click on it，So that Safari can load this plugin。The benefit is definitely very convenient，But it ’s also not very secure (plugins that can be downloaded everywhere，It is likely to have been tampered with)。
So later，Apple no longer allows users to directly download plug-ins to install on Safari，Must pass Mac App[……]