运行命令时，sudo apt-get install build-essential libssl-dev libffi-dev python-dev我得到以下输出。
Reading package lists... Done
Building dependency tree
Reading state information... Done
build-essential is already the newest version (12.4ubuntu1).
libffi-dev is already the newest version (3.2.1-8).
python-dev is already the newest version (2.7.15~rc1-1).
libssl-dev is already the newest version (1.1.1-1ubuntu2.1~18.04.5).
0 upgraded, 0 newly installed, 0 to remove and 28 not upgraded.
1 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Do you …