uid = prompt("Enter username:")
eid = prompt("Enter user's email address:")
password = generate_passwd()
run('adduser -g vpn -c %s %s') % (eid, uid)
run("echo -e '%sn' | passwd %s") % (password, uid)
print (password)

File "/tmp/hardway/fabfile.py", line 56, in addvpnuser
    run('adduser -g vpn -c %s %s') % (eid, uid)
TypeError: not all arguments converted during string formatting

run('adduser -g vpn -c %s %s' % (eid, uid))

run('adduser -g vpn -c %s %s') % (eid, uid)

run("echo -e '%sn' | passwd %s" % (password, uid))

run("echo -e '%sn' | passwd %s") % (password, uid)