问题1：python3安装pillow报错：
The headers or library files could not be found for jpeg,
a required dependency when compiling Pillow from source.
解决：pip版本太低，升级pip到最新版。
python3 -m pip install --upgrade pip
python3 -m pip install --upgrade Pillow问题2:brew安装失败
解决：更换镜像源
/bin/zsh -c "$(curl -fsSL https://gitee.com/cunkai/HomebrewCN/raw/master/Homebrew.sh)"
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