Creating a .bin bytes file from ascii int list on Python

Question

I'm trying to convert a string / int list to a .bin bytes format final file:

final_data = ['3247', '5146', '6971', '-8192', '8192', '11192']
final_data2 = [int(i) for i in final_data]
arr = bytes(final_data2)
with open("data.bin", "wb") as fh:
    fh.write(arr)

But I'm getting this error:

ValueError: bytes must be in range(0, 256)

How to proceed knowing that I have negative numbers and numbers larger than 256 ?

solid.py · Accepted Answer · 2020-09-08 09:24:05Z

1

You could go for something like this: The to_bytes() call transform each int to a binary representation.

final_data = ['3247', '5146', '6971', '-8192', '8192', '11192']

with open("data.bin", "wb") as fh:
    for i in final_data:
      fh.write(int(i).to_bytes(32, byteorder = 'big', signed = True))

edited Sep 8, 2020 at 9:24

answered Sep 8, 2020 at 9:18

solid.py

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