将OS模块与raw_input一起使用时出错

Question

I have wrote the following code:

import os

def a():
    take = raw_input("insert: ")
    os.system("ifconfig eth0 hw ether %d") %take

a()

i get an error that unsupported operand type(s) for %: 'int' and 'str' . how can i make it work and get the string from 'take' that will be with letters, numbers and punctuation..?? (i want to insert a MAC address..).

Thannks

Answer 1

In your code, raw_input returns a string so the variable take is a string.

import os

def a():
   take = raw_input("insert: ")
   os.system("ifconfig eth0 hw ether %s" % take)

Answer 2

Your syntax is incorrect Try below code

os.system("ifconfig eth0 hw ether %d"%take)

Use this :

import os

def a():
   take = raw_input("insert: ")
   os.system("ifconfig eth0 hw ether %s" % take)