xor_encoder.py

#!/usr/bin/env python2
import sys
KEY = 'x'
def xor(data, key):
    key = str(key)
    l = len(key)
    output_str = ""
    for i in range(len(data)):
        current = data[i]
        current_key = key[i % len(key)]
        output_str += chr(ord(current) ^ ord(current_key))
    return output_str
def printCiphertext(ciphertext):
    print('{ 0x' + ', 0x'.join(hex(ord(x))[2:] for x in ciphertext) + ' };')
try:
    plaintext = open(sys.argv[1], "rb").read()
except:
    print("File argument needed! %s " % sys.argv[0])
    sys.exit()
ciphertext = xor(plaintext, KEY)
print('{ 0x' + ', 0x'.join(hex(ord(x))[2:] for x in ciphertext) + ' };')

hello, what should i put as the KEY ? I've been trying to figure it out for many hours but couldn't find any help.
Thank's in advance

Whatever key you want to use for encoding.

that's the thing, i'm new in all of this and wathever key i try to write i always get an error "SyntaxError: invalid character '“' (U+201C)"
so i wondered what i could use as a key, because i keep getting this and an error that specify what's the problem
"File "/home/user/xor_file.py", line 2
KEY = “10110111” no matter what i try either binary (here) or letters i don't know what key i should use

Do you know that it's a pythons script, right? You need to run it using python2.

Do you know that it's a pythons script, right? You need to run it using python2.

i'm a real dumbass, thank's for taking your time man, really . I kept running it wrongly ...