I am trying to make python code that calculate $"$CRC code" using "shift register".

i don't know how to$...$

def crc$\_$shift$\_$register$($data$,$ generator$)$:

data $=$ list$($map$($int$,$ data.split$()))$

generator $=$ list$($map$($int$,$ generator.split$()))$

print$("$information: $",$ data$)$

print$("$generator: $",$ generator$)$

crc $=[0]*($len$($generator$)-1)$

print$("$crc: $",$ crc$)$

# list concatenate

data $=$ data $+$ crc

print$("$codeword:$",$ data$)$

print$("$codeword length:", len$($data$))$

# shift register

data $+=[0]*($len$($generator$)-1)$

for bit in data:

if crc$[0]==1$:

for i in range$($len$($generator$))$:

crc$[$i$]=$ crc$[$i$]^$ generator$[$i$]$

crc$.$pop$(0)$

crc$.$append$($bit$)$

codeword $=$ data $+$ crc

return crc$,$ codeword