ubuntu python 版本升級後 No module named 'apt_pkg' No module named 'pip._internal'

1.解決No module named 'apt_pkg' 

sudo apt-get remove python3-apt

sudo apt-get install python3-apt

 2.解決No module named 'pip._internal'

curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py

python3 get-pip.py --force-reinstallCollecting pip