Generate possible usernames - Printable Version

Code:

#!/usr/bin/python

import sys

def makeUsernames(names):
    result = []
    for name in names:
        name = name.replace("\n", '')
        name = name.lower()
        parts = name.split(' ')

        fname = parts[0]
        if len(parts) > 1:
            lname = parts[len(parts) - 1]

            result.append(fname + lname)
            result.append(lname + fname)
            result.append(fname[0] + lname)
            result.append(fname + lname[0])
            result.append(lname[0] + fname)
            result.append(lname + fname[0])
            result.append(fname + '.' + lname)
            result.append(lname + '.' + fname)
            result.append(fname[0] + '.' + lname)
            result.append(lname[0] + '.' + fname)
            result.append(fname + '_' + lname)
            result.append(lname + '_' + fname)
            result.append(fname[0] + '_' + lname)
            result.append(lname[0] + '_' + fname)
            result.append(fname + '-' + lname)
            result.append(lname + '-' + fname)
            result.append(fname[0] + '-' + lname)
            result.append(lname[0] + '-' + fname)
        else:
             result.append(fname)

    return result

names = []
if len(sys.argv) < 2:
    sys.exit('Syntax error: Not enough arguments')
elif sys.argv[1] == '-f':
    if len(sys.argv) != 3:
        sys.exit('Syntax error: You must supply an existing file')
    else:
        filename = sys.argv[2]
        try:
            with open(filename) as f:
                names = f.readlines()
        except IOError:
            sys.exit('IOError: No such file or directory')
else:
    names = [' '.join(sys.argv[1:])]

if len(names) > 0:
    result = makeUsernames(names)
    for name in result:
        print name
else:
    sys.exit('Unable to generate data')

Code:

./genuname.py -f filename
johndoe
doejohn
jdoe
johnd
djohn
doej
john.doe
doe.john
j.doe
d.john
john_doe
doe_john
j_doe
d_john
john-doe
doe-john
j-doe
d-john
ericsmith
smitheric
esmith
erics
seric
smithe
eric.smith
smith.eric
e.smith
s.eric
eric_smith
smith_eric
e_smith
s_eric
eric-smith
smith-eric
e-smith
s-eric