Fixed bug in io.py; load_network had been attempting to take the length of an integer.
Fixed bug in io.py; load_network had been attempting to take the length of an integer.

econandrew/bandicoot,ulfaslak/bandicoot,econandrew/bandicoot,ulfaslak/bandicoot,yvesalexandre/bandicoot,econandrew/bandicoot,yvesalexandre/bandicoot,yvesalexandre/bandicoot,ulfaslak/bandicoot