A naive implementation to query an IP address of a machine

get_ip_address_v1.py

from subprocess import Popen,PIPE
def get_ip_addresses():
    c1 = Popen(["ip","addr"], stdout=PIPE)
    addr_table = c1.communicate()[0]
    addr_table = addr_table.split("\n")

    index = 0
    while index < len(addr_table):
        if "eth0" in addr_table[index]:
            break
        index += 1

    while index < len(addr_table):
        if "inet " in addr_table[index] and "/" in addr_table[index]:
            fields = addr_table[index].split("inet ")
            return fields[1].split("/")[0]
        index += 1
    return None