Kernel panic Debian 9, python3 removed

I was trying to upgrade python3 in debian 9, but fail, then i had the brilliant idea of:

apt-get remove python3

The system crash after that, then i can not able to restart, kernel panic is showed and if i try to go into rescue mode using the USB image of the installation, i can not get shell into the partition where Debian is installed.

I was wondering if is possbile reintall python3 manually but the rescue shell dont havea the neccessary commands.

I already tried to download the *.deb packages but only download tiny files, the unistall erase a lot of data maybe 700 MB, then i dont know exactly that i have to copy, but i only erase python3