我试过输入：
sudo apt install python3-pip
我得到的错误是：
$ sudo apt install python3-pip
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following additional packages will be installed:
libexpat1-dev libpython3-dev libpython3.5-dev python-pip-whl python3-dev python3-wheel python3.5-dev
The following NEW packages will be installed:
libexpat1-dev libpython3-dev libpython3.5-dev python-pip-whl python3-dev python3-pip python3-wheel python3.5-dev 0 to upgrade, 8 to newly install, 0 to remove and 0 not to upgrade.
Need to get 1,219 kB/39.1 MB of archives.
After this operation, 56.8 MB of …