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firefly开发板 Ubuntu18.04 自带python2.7和python3.6，但是rockchip的rknn-toolkit从1.4开始就不支持py36-aarch64的whl包了，所以只能重新装python3.7了。
sudo apt updatesudo apt install software-properties-commonsudo add-apt-repository ppa:deadsnakes/ppasudo apt install python3.7-dev
在执行sudo apt install python3.7-dev时报错如下：
python3.7-dev : Depends: python3.7 (= 3.7.9-1+bionic1) but it is not going to be installed Depends: libpython3.7-dev (= 3.7.9-1+bionic1) but it is not going to be installed Depends: libpython3.7 (= 3.7.9-1+bionic1) but it is not going to be installedE: Unmet dependencies. Try 'apt --fix-broken install' with no packages (or specify a solution).
解决方法:
apt --fix-broken install apt-get update apt-get upgrade转载地址：http://tmrii.baihongyu.com/