def getBinary(bitstr):
    bit=' '.join(format(ord(char), 'b') for char in bitstr)
    return bit

def getChar(charstr):
    char = []
    for b in range(len(charstr) / 8):
        byte = charstr[b*8:(b+1)*8]
        char.append(chr(int(''.join([str(bit) for bit in byte]), 2)))
    return ''.join(chars)

message="We attack at dawn!?*"
key=2
resp=getCaesar(message, key)
print("Ciphertext: ")
print(resp)
print()

bitstr=list(resp)
binary=getBinary(bitstr)
print("Binary: ")
print(binary)
print()

charstr=getChar(binary)
print("Char String: ")
print(charstr)
print()

Ciphertext:
Yg cvvcem cv fcyp#!,

Binary:
1011001 1100111 100000 1100011 1110110 1110110 1100011 1100101 1101101 100000 1100011 1110110 100000 1100110 1100011 1111001 1110000 100011 100001 101100

for b in range(len(charstr) / 8):