Is it possible to measure packet rate with libpcap?

I have a开发者_开发问答 python script, that uses libpcap (pcapy) to capture some specific packets, for example, packets from 10.1.1.1 to 10.2.2.2. Is it possible to measure that data transfer rate? I mean, we can get a size of packet, but as I understand, we can't find out how long did it take to transfer that packet. Is there some another way to measure packet rate?

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You could use time to time how long it takes to get the packet:

import time
start = time.time()
# do something you want to time
elapsed = time.time() - start