Python system info script using functions

pysysinfo_func.py

#!/usr/bin/env python
#A System Information Gathering Script

import subprocess

#Command 1
def uname_func():
  uname = "uname"
  uname_arg = "-a"
  print "Gathering system information with %s command:\n" % uname
  subprocess.call([uname, uname_arg])

#Command 2
def disk_func():
  diskspace = "df"
  diskspace_arg = "-h"
  print "Gathering diskspace information %s command:\n" % diskspace
  subprocess.call([diskspace, diskspace_arg])
  
#Main function that call other functions
def main():
  uname_func()
  disk_func()

if __name__ == "__main__":
  main()