encryption - in python compilation EOFError SyntaxError: multiple statements found while compiling a single statement -

i have code , while run it

import sys  msgs = ["315c4eeaa8b5f8aaf9174145bf43e1784b8fa00dc71d885a804e5ee9fa40b16349c146fb778cdf2d3aff021dfff5b403b510d0d0455468aeb98622b137dae857553ccd8883a7bc37520e06e515d22c954eba5025b8cc57ee59418ce7dc6bc41556bdb36bbca3e8774301fbcaa3b83b220809560987815f65286764703de0f3d524400a19b159610b11ef3e", "234c02ecbbfbafa3ed18510abd11fa724fcda2018a1a8342cf064bbde548b12b07df44ba7191d9606ef4081ffde5ad46a5069d9f7f543bedb9c861bf29c7e205132eda9382b0bc2c5c4b45f919cf3a9f1cb74151f6d551f4480c82b2cb24cc5b028aa76eb7b4ab24171ab3cdadb8356f", "32510ba9a7b2bba9b8005d43a304b5714cc0bb0c8a34884dd91304b8ad40b62b07df44ba6e9d8a2368e51d04e0e7b207b70b9b8261112bacb6c866a232dfe257527dc29398f5f3251a0d47e503c66e935de81230b59b7afb5f41afa8d661cb", "32510ba9aab2a8a4fd06414fb517b5605cc0aa0dc91a8908c2064ba8ad5ea06a029056f47a8ad3306ef5021eafe1ac01a81197847a5c68a1b78769a37bc8f4575432c198ccb4ef63590256e305cd3a9544ee4160ead45aef520489e7da7d835402bca670bda8eb775200b8dabbba246b130f040d8ec6447e2c767f3d30ed81ea2e4c1404e1315a1010e7229be6636aaa", "3f561ba9adb4b6ebec54424ba317b564418fac0dd35f8c08d31a1fe9e24fe56808c213f17c81d9607cee021dafe1e001b21ade877a5e68bea88d61b93ac5ee0d562e8e9582f5ef375f0a4ae20ed86e935de81230b59b73fb4302cd95d770c65b40aaa065f2a5e33a5a0bb5dcaba43722130f042f8ec85b7c2070", "32510bfbacfbb9befd54415da243e1695ecabd58c519cd4bd2061bbde24eb76a19d84aba34d8de287be84d07e7e9a30ee714979c7e1123a8bd9822a33ecaf512472e8e8f8db3f9635c1949e640c621854eba0d79eccf52ff111284b4cc61d11902aebc66f2b2e436434eacc0aba938220b084800c2ca4e693522643573b2c4ce35050b0cf774201f0fe52ac9f26d71b6cf61a711cc229f77ace7aa88a2f19983122b11be87a59c355d25f8e4", "32510bfbacfbb9befd54415da243e1695ecabd58c519cd4bd90f1fa6ea5ba47b01c909ba7696cf606ef40c04afe1ac0aa8148dd066592ded9f8774b529c7ea125d298e8883f5e9305f4b44f915cb2bd05af51373fd9b4af511039fa2d96f83414aaaf261bda2e97b170fb5cce2a53e675c154c0d9681596934777e2275b381ce2e40582afe67650b13e72287ff2270abcf73bb028932836fbdecfecee0a3b894473c1bbeb6b4913a536ce4f9b13f1efff71ea313c8661dd9a4ce", "315c4eeaa8b5f8bffd11155ea506b56041c6a00c8a08854dd21a4bbde54ce56801d943ba708b8a3574f40c00fff9e00fa1439fd0654327a3bfc860b92f89ee04132ecb9298f5fd2d5e4b45e40ecc3b9d59e9417df7c95bba410e9aa2ca24c5474da2f276baa3ac325918b2daada43d6712150441c2e04f6565517f317da9d3", "271946f9bbb2aeadec111841a81abc300ecaa01bd8069d5cc91005e9fe4aad6e04d513e96d99de2569bc5e50eeeca709b50a8a987f4264edb6896fb537d0a716132ddc938fb0f836480e06ed0fcd6e9759f40462f9cf57f4564186a2c1778f1543efa270bda5e933421cbe88a4a52222190f471e9bd15f652b653b7071aec59a2705081ffe72651d08f822c9ed6d76e48b63ab15d0208573a7eef027", "466d06ece998b7a2fb1d464fed2ced7641ddaa3cc31c9941cf110abbf409ed39598005b3399ccfafb61d0315fca0a314be138a9f32503bedac8067f03adbf3575c3b8edc9ba7f537530541ab0f9f3cd04ff50d66f1d559ba520e89a2cb2a83"] target = "32510ba9babebbbefd001547a810e67149caee11d945cd7fc81a05e9f85aac650e9052ba6a8cd8257bf14d13e6f0a803b54fde9e77472dbff89d71b57bddef121336cb85ccb8f3315f4b52e301d16e9f52f904" initkey = "66396e89c9dbd8cc9874352acd6395102eafce78aa7fed28a07f6bc98d29c50b69b0339a19f8aa401a9c6d708f80c066c763fef0123148cdd8e802d05ba98777335daefcecd59c433a6b268b60bf4ef03c9a611098bb3e9a3161edc7b804a33522cfd202d2c68c57376edba8c2ca50027c61246ce2a12b0c4502175010c0a1ba4625786d911100797d8a47e98b0200c4ab000000a900000000008a0082d10000320000000000000000050000911f3edfd73e8333e8463df984ee"  msgs = [x.decode('hex') x in msgs] target = target.decode('hex')  key = list(initkey.decode('hex'))  def charxor(a,b):     return chr(ord(a) ^ ord(b))  def strxor(a, b):     # xor 2 strings of different lengths     if len(a) > len(b):         return "".join([chr(ord(x) ^ ord(y)) (x, y) in zip(a[:len(b)], b)])     else:         return "".join([chr(ord(x) ^ ord(y)) (x, y) in zip(a, b[:len(a)])])  def encrypt(key, msg):     c = strxor(key, msg)     print     print c.encode('hex')     return c  def isspace(s,i):     x in msgs:         if x != s , < len(x):             c = charxor(x[i],s[i])             if not c.isalpha():                 return false     return true  def printprogress():     in range(len(msgs)):         print str(i) + ": " + "".join(strxor(msgs[i],key))         print     print "* : " + "".join(strxor(target,key))  def main():     '''     -- initialize key     in range(max(map(len,msgs))):         foundspace = false         x in msgs:             if < len(x) , isspace(x,i):                 key.append(charxor(x[i],' '))                 foundspace = true                 break         if not foundspace:             key.append(chr(0))     '''      while true:         printprogress()         s = int(raw_input("stridx: "))         if s == -1:             break         s = msgs[s]         in range(len(s)):             c = charxor(s[i],key[i])             print str(i) + "\t\t" + (str(c) if c.isalnum() else ' ')         = int(raw_input("idx: "))         c = raw_input("char: ")[0]         key[i] = charxor(s[i],c)      print "".join(key).encode('hex')  main() 

i should decrypted words here are: 0: can factor number 15 quantum computers. can factor number 15 dog trained bark 3 times - robert harley

1: euler enjoy theorem becomes corner stone of crypto - annonymous on euler's theorem

...

stridx: traceback (most recent call last):   line 79, in <module>     main()   line 66, in main     s = int(raw_input("stridx: ")) eoferro 

your crypto irrelevant here.

your import sys statement mis-indented; fixed that.

you seem run python code without giving chance read standard console input. 1 way click .py file in windows explorer.

the problem, stack trace helpfully shows, here:

s = int(raw_input("stridx: ")) 

this call waits string sent standard input (e.g. due user pressing keys) converted integer. seem run program in way when standard input not accessible, eoferror (end-of-file can happen on presumably interactive input, too!).

i ran code on linux in terminal; seemed work fine.