'haslayer' function not working in scapy-python

I'm trying to write a simple code that detect IP source address for ICMP packet in scapy, the problem is haslayer function looks not returning anything.

from scapy.all import *

while 1:

    pkt = sniff ( iface="eth0" , count = 1 )
    pkt.summary()

    try:
        if pkt.haslayer(IP):
            ipsrc =pkt.getlayer(IP).src
            print ipsrc

    except:
        pass

the result is

Ether / IP / ICMP 10.0.2.15 > 10.0.2.11 echo-request 0 / Raw
Ether / IP / ICMP 10.0.2.15 > 10.0.2.11 echo-request 0 / Raw
Ether / IP / ICMP 10.0.2.15 > 10.0.2.11 echo-request 0 / Raw

So I'm not able to catch the IP source address for the ICMP request Any idea ?

Your generic except masks any errors that your code might encounter. Change pass to raise and remove any specific errors. E.g. the first I encountered with your code was:

socket.error: [Errno 1] Operation not permitted

and after running as root I got:

AttributeError: 'list' object has no attribute 'haslayer'

and that made me change the code to something that worked (running as root):

from scapy.all import *

while 1:

    pktl = sniff ( iface="eth0" , count = 1 )
    pktl.summary()

    for pkt in pktl:
        try:
            if pkt.haslayer(IP):
                ipsrc =pkt.getlayer(IP).src
                print(ipsrc)
        except:
            raise

So you probably better of removing the try - except altogether