how to sort a text file based on column

Question

I have a text file. It has
192.168.10.0/34, 22, 63355
172.156.34.20/8, 20, 21
10.148.172.31/16, 18, 22
I would like to sort it cloumn wise,so that cloumn[0] sould only has a list of ip address and column[1] should have ports and column[3] will have port.
Here delimeter is comma(,)

def ip_list(ip):
.......
return ip