This is a Python module that interfaces to libpcap, the UNIX packet capture library. This can be used for many purposes including network debugging, traffic analysis, intrusion detection. The packet capture uses libpcap but allows you to specify a Python function as the handler.
You can download it from the following link: https://packetstormsecurity.com/files/download/11713/py-libpcap-22Feb99-0147.tar.gz
Source: https://packetstormsecurity.com/files/11713/py-libpcap-22Feb99-0147.tar.gz.html