Packet Crafting

[dexpota]

I searched for some examples and inside the tests and I was not able to understand if it is possible to craft a packet from zero. My question is if it is possible to create a packet and then have a binary representation of it (a byte array)? Something like the following example from Scapy.

l2 = Ether()
l3 = IP(dst='8.8.8.8/30')
l4 = TCP(dport=53, flags = 'S')

# This will simply nest the packet inside one another
packet = l2/l3/l4

If you could add an example it would be very useful. Thank you.