Python (idle) Encode using ASCII

Question

Converting each plaintext character to its ASCII (integer) value and store in a list. I have done like this:

print("This program uses a Caesar Cipher to encrypt a plaintex message using the encrytion key you provide")
name = input("Enter the message to be encryted:")       
key = input("Enter an intefer for an encryption key:")

name = name.upper()

x =""
for x in name:                       
    name = ascii.append(chr(ord(name[x])+key))               
print(name)

But I have an error:

Traceback (most recent call last):
  File "C:\Users\Heera\Downloads\NameScore (1).py", line 10, in <module>
    name = ascii.append(chr(ord(name[x])+key))
AttributeError: 'builtin_function_or_method' object has no attribute 'append'

How can I fix this?

I want the result of:

This program uses a Caesar Cipher to encrypt a plaintext message using the encryption key you provide.
Enter the message to be encrypted: CS Rox my Sox
Enter an integer for an encrytion key: 177
The fully encoded message is: DZ'SV_!T`!ZVY

Answer 1

In order to convert each plain text character to integer and store it into a list you need something simple like this:

//Take the user input and stores it in a string variable called 'name'
name = input("Enter the message to be encrypted:")

//Convert all the characters in 'name' to upper case
name = name.upper()

//Create an empty list which will contain the ascii values
values = []

//For every character in the string 'name' assign it to x and run the loop
for x in name:

    //append the numeric value of the current character stored in 'x' to the list 'values'
    values.append(ord(x))

//When all characters have been appended to the list display the list.
print(values)

I've added inline comments to the code to help you as I can see from this and your previous question that you are struggling a bit.

EDIT

In order for the key to be added and then turned back into a character you have to use the following code. I've added inline comments only to the new lines.

print("This program uses a Caesar Cipher to encrypt a plain text message using the encryption key you provide")
name = input("Enter the message to be encrypted:")

//Take the user input for the encryption key (The key here is saved as string)
key = input("Enter an intefer for an encryption key:")

name = name.upper()

values = []

for x in name:

    //int(key) parses the key to an integer, then it is added to the ascii value of the current letter and is saved in the variable 'encrypted'
    encrypted = ord(x) + int(key)

    //chr(encrypted) parses the number value of 'encrypted' into the corresponding ascii character and then it appends it to the list 'values'
    values.append(chr(encrypted))

print(values)

Answer 2

function ascii has no attribute called append, you have it confused with a list try the following :

print("This program uses a Caesar Cipher to encrypt a plaintex message using the encrytion key you provide")
name = input("Enter the message to be encryted:")       
key = input("Enter an intefer for an encryption key:")

name = name.upper()
name = ''.join([chr(ord(x)+key) for x in name])