Email generator according to the spreadsheet http://bit.ly/name2email

email_generator.py

import itertools

name = 'FirstName MiddleName LastName'
company_domain = 'company.com'

name_parts = name.lower().split(' ')
fname, mname, lname = None, None, None

if len(name_parts) > 0:
    fname = name_parts[0]
if len(name_parts) > 1:
    lname = name_parts[1]
if len(name_parts) > 2:
    mname = name_parts[1]
    lname = name_parts[2]
if len(name_parts) > 3:
    mname = None                # not sure what the middle name could be so None
    lname = name_parts[-1]

possible_emails = []
separators = ['.', '-', '_', '']
if fname and not lname and not mname:
    possible_emails = ['%s@%s'%(fname, fname[0]), '%s@%s'%(fname[0], fname)]

if fname and lname and not mname:
    fi = fname[0]
    li = lname[0]
    permutations = list(itertools.product((fi, fname), (li, lname))) + list(itertools.product((li, lname), (fi, fname)))
    for pm in permutations:
        possible_emails.extend(['%s%s%s@%s'%(pm[0], sep, pm[1], company_domain) for sep in separators])

if fname and lname and mname:
    fi = fname[0]
    li = lname[0]
    mi = mname[0]
    fl_permutations = list(itertools.product((fi, fname), (li, lname))) + list(itertools.product((li, lname), (fi, fname)))
    permutations = []
    map(lambda fl: permutations.extend([fl, (fl[0], mname, fl[1]), (fl[0], mi, fl[1])]), fl_permutations)
    for pm in permutations:
        if len(pm) == 2:
            possible_emails.extend(['%s%s%s@%s'%(pm[0], sep, pm[1], company_domain) for sep in separators])
        if len(pm) == 3:
            possible_emails.extend(['%s%s%s%s%s@%s'%(pm[0], sep, pm[1], sep, pm[2], company_domain) for sep in separators])

print possible_emails