Python Object Int is not subscriptable

Question

I have this code to encrypt and decrypt strings:

mo = int(input("Select mode\n1. Encrypt\n2. Decrypt\n"))
def getHash(key):
    total = int(0)
    key = key
    for i in range(0,len(str(key))):
        print("No: "+str(i))
        num = ord(key[i])
        total += int(num)
    return total

if mo == 1:
    m = input("Enter a string to encrypt: ")
    k = input("Enter a password, don't forget this! ")
    enc = ''
    for i in range(0, len(m)):
        enc += (str(int(ord(m[i]))*getHash(k))+ " ")
    print(enc)
elif mo == 2:
    m = input("Enter an encrypted string: ")
    k = input("Enter the password to decrypt it: ")
    final = ''
    current = ''
    for i in range(0, len(m)):
        if m[i] != " ":
            current += m[i]
            print("Current find: "+current)
        elif m[i] == " ":
            print("Completed "  +current)
            for k in range(0,len(current)):
                print("Running " +"."*k)
                print("Hash: "+str(getHash(k)))
                char = int(current) / getHash(k)
                print(char)
                final += chr(char)
                current = ''
    print(final)

This works fine when encrypting but decrypting an encrypted peice of text it returns

Select mode 1. Encrypt 2. Decrypt 1 Enter a string to encrypt: test Enter a password, don't forget this! test No: 0 No: 1 No: 2 No: 3 No: 0 No: 1 No: 2 No: 3 No: 0 No: 1 No: 2 No: 3 No: 0 No: 1 No: 2 No: 3 51968 45248 51520 51968

RESTART: C:\Users\leosk\AppData\Local\Programs\Python\Python35-32\encrypter.py Select mode 1. Encrypt 2. Decrypt 2 Enter an encrypted string: 51968 45248 51520 51968 Enter the password to decrypt it: test Current find: 5 Current find: 51 Current find: 519 Current find: 5196 Current find: 51968 Completed 51968 Running No: 0 Traceback (most recent call last): File "C:\Users\leosk\AppData\Local\Programs\Python\Python35-32\encrypter.py", line 31, in print("Hash: "+str(getHash(k))) File "C:\Users\leosk\AppData\Local\Programs\Python\Python35-32\encrypter.py", line 7, in getHash num = ord(key[i]) TypeError: 'int' object is not subscriptable

what is key ? It seems it is number - ie. 123 - so you try to do 123[i] — furas
– furas, Commented Oct 22, 2016 at 14:20
Catch the error with try/except and print relavent variables to see what is happening, add other print statements at strategic locations to help trace it down. Might be a good time to get familiar with The Python Debugger. As a last resort, visualize code execution at pythontutor.com/visualize.html#mode=edit — wwii
– wwii, Commented Oct 22, 2016 at 16:32
Look at the Traceback, it tells you which line(s) are causing the problem, at print("Hash: "+str(getHash(k))) what is k and what does getHash() do with it? — wwii
– wwii, Commented Oct 22, 2016 at 16:37
FYI, the entire edit history of all questions and answers are publicly available. Never post anything that is of a sensitive nature, or that you do not have permission to make publicly available. — Dunes
– Dunes, Commented Nov 12, 2016 at 15:41

O.O. · Accepted Answer · 2016-10-22 14:23:36Z

3

You are trying to use a value of type int as you would a list.

k = input("Enter the password to decrypt it: ")
...
for k in range(0,len(current)):

I think you are by accident using a variable k as key once, and index later, and passing the index value into your gethash function.

print("Hash: "+str(getHash(k)))

answered Oct 22, 2016 at 14:23

O.O.

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