Variable in os.system

Question

I am using os.system method in Python to open a file in Linux. But I don't know how to pass the variable (a) inside the os.system command

import os
a=4
os.system('gedit +a test.txt')

How can i pass the variable as an integer inside the command?

Answer 1

os.system('gedit +%d test.txt' % (a,))

建议使用子进程 ，而不是os.system ：

subprocess.call(['gedit', '+%d' % (a,), 'test.txt'])

Answer 2

os.system("gedit +" + str(a) + " test.txt")