Question

In python, how can I pad an array of bytes so that all values are 8 bytes long?

#bytes to parse

byte = b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'

#parse bytes to all be 8 long in the array

blocklist = [inpbyteseq[i:i+8] for i in range(0,len(inpbyteseq), 8)]

#Pad the bytes at the end of the array so that they are 8 long as well

    for i in blocklist:
        while (sys.getsizeof(i) < 41):
            blocklist[i] = blocklist[i] + b'\x20' * (41 - sys.getsizeof(i))

This returns an error. What am I doing wrong?

Answer 1

THE CODE IS:

# bytes to parse

byte = b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'

# taking user input as string and then converting it into bytes using str.encode()
inpbyteseq = str.encode(input('Enter a string\n'))

# parse bytes to all be 8 long in the array
# creating a list of sequences of length 8 bytes
blocklist = [inpbyteseq[i:i + 8] for i in range(0, len(inpbyteseq), 8)]

# Pad the bytes at the end of the array so that they are 8 long as well
# iterating through each sequence in blocklist
# i is index of the sequence in the blocklist
for i in range(len(blocklist)):
    if len(blocklist[i]) < 8:
        blocklist[i] = blocklist[i] + b'\x20' * (8 - len(blocklist[i]))

print(blocklist)

SCREENSHOT TO UNDERSTAND INDENTATION:

OUTPUT: