How to read complete file with bitstring

Question

I want to read as many 24 bit chunks as possible from a file. How can I do this using bitstrings' ConstBitStream when I don't now how many chunks there are?

Currently I do this:

eventList = ConstBitStream(filename = 'events.dat')
for i in range(1000) :
    packet = eventList.read(24)

(here I have to calculate the number of events beforehand)

Answer 1

You could read until an ReadError exeption is generated

try:
    while True:
        packet = eventList.read(24)
except ReadError:
    pass

Answer 2

Catching the ReadError is a perfectly good answer, but another way is to instead use the cut method, which returns a generator for bitstrings of a given length, so just

for packet in eventList.cut(24):

should work.