Create a list of usernames like elchapo,echapo,e.chap and stuff

usernamelist.py

#!/usr/bin/env python3
import sys
import os.path

if __name__ == "__main__":
    if len(sys.argv) != 2:
        print("usage: {} names.txt".format((sys.argv[0])))
        sys.exit(0)

    if not os.path.exists(sys.argv[1]):
        print("{} not found".format(sys.argv[1]))
        sys.exit(0)

    filename = open(sys.argv[1]).read().replace(' ','').replace('\n','')

    with open (('%s-list.txt' % filename ),'w+') as f:
        with redirect_stdout(f):
            for line in open(sys.argv[1]):
                name = ''.join([c for c in line if  c == " " or  c.isalpha()])

                tokens = name.lower().split()

                if len(tokens) < 1:
                    continue

                fname = tokens[0]
                lname = tokens[-1]

                print(fname + lname)          
                print(lname + fname)          
                print(fname + "." + lname)     
                print(lname + "." + fname)     
                print(lname + fname[0])       
                print(fname[0] + lname)       
                print(lname[0] + fname)       
                print(fname[0] + "." + lname)  
                print(lname[0] + "." + fname)  
                print(fname)                   
                print(fname[0].capitalize() + lname) 
                print(fname[:2] + lname[:4])