repositorios debian - sudo apt install thonny -y

En la terminal Paso 1 sudo rm -f /etc/apt/sources.list Paso 2 sudo nano /etc/apt/sources.list Copiar adentro lo siguiente deb http://deb.debian.org/debian/ stable main contrib non-free non-free-firmware deb-src http://deb.debian.org/debian/ stable main contrib non-free non-free-firmware deb http://deb.debian.org/debian-security stable-security main contrib non-free non-free-firmware deb-src http://deb.debian.org/debian-security stable-security main contrib non-free non-free-firmware deb http://deb.debian.org/debian/ stable-updates main contrib non-free non-free-firmware deb-src http://deb.debian.org/debian/ stable-updates main contrib non-free non-free-firmware ctrl +o ctrl +x sudo apt clean sudo apt update sudo apt install thonny -y