Any ideas why this fails?:

["Riggs, Ben" <rigg0022 umn edu>]

<snip>
%include /tmp/network-include

%pre --interpreter /usr/bin/python
#find-ethN configures network info
import os

#Determine which ethN interface matches mac address supplied by ldap
network_statement = "network --bootproto=dhcp --onboot=on --noipv6"
pipe = os.popen("ifconfig -a", 'r')
for line in pipe.readlines():
    if '00:e0:81:33:d6:c7' in line.lower():
        network_statement = "".join((network_statement, " --device=", 
line.split()[0].strip(), "\n"))
file = open("/tmp/network-include", 'w')
file.write(network_statement)
file.close()
</snip>

I can't find anything glaringly obvious. I know the python works. When 
anaconda runs, it still asks for network info manually.