使用python脚本升级linux

Question

I want to upgrade my linux system with a python script. But I don't know how to send Y or Enter to the console.

This is my code:

sudo_password = 'password'
command = 'apt-get update'
os.system('echo %s|sudo -S %s' % (sudo_password, command))
command = 'apt-get upgrade'
os.system('echo %s|sudo -S %s' % (sudo_password, command))

EDIT:

I want to run the script automated, therefore I don't want to use raw_input() or input().

Answer 1

Use raw_input function

eg

user_input = raw_input('Enter Y ')

Answer 2

Alternatively you could add the -y parameter to your apt-get command. Like this:

...
command = 'apt-get upgrade -y'
...

Answer 3

If you want to just answer 'y' to all the apt-get prompts, consider piping the command through the yes bash command.

Untested (and you should test):

command = 'apt-get update|yes'
os.system('echo %s|sudo -S %s' % (sudo_password, command))
command = 'apt-get upgrade|yes'
os.system('echo %s|sudo -S %s' % (sudo_password, command))

The yes man page description says:

Repeatedly output a line with all specified STRING(s), or 'y'.