CRC32 of binary data in python without last 4 bytes

Question

I am trying to get the CRC32 of some binary data, except for the last 4 bytes.

My code so far:

with open('filename.ext','rb') as f:
    fileContent = f.read()
    file_size, = struct.unpack("i",f.read(:4))
    print hex(file_size)

I know that the :4 is wrong and I am still looking for how not to read the last 4 bytes and then get the crc32 for the other data.

MartyIX · Accepted Answer · 2015-11-14 18:03:00Z

3

You can use indexing like this:

fileContent[:-4]

to skip the last 4 bytes.

answered Nov 14, 2015 at 18:03

MartyIX

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