python 安裝coreml

二、安裝pip,  下載get-pip.py, https://bootstrap.pypa.io/get-pip.py，而後Python 這個文件，若是沒有權限就加sudo
三、安裝coreml：這個各類報error，利用瞭如下這種使用虛擬環境的方式，不方便的一點就是每次須要在虛擬環境裏使用coreml：
連接：https://stackoverflow.com/questions/44612991/error-installing-coremltools

You're trying to change your system Python. That's why it says [Errno 1] Operation not permitted. To avoid messing up system libraries, you need to create separate Python virtual environment. This is how to do it:

Upgrade pip:
pip install --upgrade pip
Install virtual environment.
pip install –U virtualenv
Create new virtual environment:
cd ~
virtualenv coreml
This creates folder ~/coreml/ and a local copy of Python, pip and all other stuff you need for work.
To activate virtual environment:
source coreml/bin/activate
Now you see in your terminal (coreml) prepends your user name.
In newly created virtual environment:
pip install -U coremltools
Check that library was installed successfully:
python
import coremltools
There should not be any error messages.
To deactivate virtual environment run:
deactivate

沒有權限的話，就在前面加sudo