CODEWITHSUNDEEP
pythonbitstringbitstream
HWende
HWende

Reputation: 1705

How to read complete file with bitstring

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)

Upvotes: 6

Views: 2223

Answers (2)

Scott Griffiths
Scott Griffiths

Reputation: 21925

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.

Upvotes: 3

waynix
waynix

Reputation: 531

You could read until an ReadError exeption is generated

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

Upvotes: 5

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