Phone number wordlist generator for hacking Wi-Fi networks

phonegen.py

import os
from os import path
area_code= input("Area Code: ")
output= "wlist/"+area_code+".txt"
if not os.path.exists("wlist"):
    os.mkdir("wlist")
if path.exists(output):
	print(output+" already exists, overwriting")
	os.remove(output)
else:
	print("Creating "+output)
f= open(output,"w+")
for i in range(0,1000000):
	f.write(area_code+str(i).zfill(6)+"\n")
print("done.")