Scapy is a Python-based interactive packet manipulation program
...It also performs very well at a lot of other specific tasks that most other tools can't handle, like sending invalid frames, injecting your own 802.11 frames, combining techniques (VLAN hopping+ARP cache poisoning, VoIP decoding on WEP protected channel, ...), etc.
Scapy supports Python 2.7 and Python 3 (3.4 to 3.7). It's intended to be cross platform, and runs on many different platforms (Linux, OSX, *BSD, and Window
A Network Packet Sniffing tool developed in Python 3
A Network Packet Sniffer developed in Python 3. Packets are disassembled as they arrive at a given network interface controller and their information is displayed on the screen. This application depends exclusively on the NETProtocols library (also developed and maintained by EONRaider) from version 2.0.0 and above and can be run by any Python 3.8+ interpreter.
Packet Peeper is a network protocol analyzer (or 'packet sniffer') for Mac OS X. Its features include TCP stream reassembly, privilege separation, simultaneous capture sessions, filters, Python plugins and support for pcap capture files.