我该如何只打印最后一个值？

Question

I have the fallowing code to encrypt a massage:

massage= raw_input("Enter message to be encrypted: ")

spec = chr(0b1010101)

key = ord(spec)

encrypt = ""

for i in range(0, len(massage)):

        encrypt = encrypt + chr(ord(massage[i]) ^ key)

        print encrypt

say I give "yo yo" to it

it will give me :

,

,:

,:u

,:u,

,:u,:

I only need the final answer which is the ,:u,:

what do i have to do?

Answer 1

Put the print statement outside the loop .

Since the print statement is inside, it is running once per iteration. If it is outside, then it will only do it one time-- once it has finished.

for i in range(0, len(massage)):
    encrypt = encrypt + chr(ord(massage[i]) ^ key)

print encrypt

Answer 2

unindent the call to print. This will take it out of the for loop and only print its value when the loop is finished.

On a slightly different note, you might want to work on your acceptance rate if you want people to put time and effort into answering your questions. You've asked 8 questions so far and you haven't accepted an answer to any of them. (Click the arrow next to an answer to accept it)

Answer 3

message= raw_input("Enter message to be encrypted: ")

spec = chr(0b1010101)

key = ord(spec)

encrypt = ""

for i in range(0, len(message)):

    encrypt = encrypt + chr(ord(message[i]) ^ key)

print encrypt

Answer 4

Move the print statement outside the for loop. To do that you need to unindent the print statement.

Answer 5

Using a generator:

message= raw_input("Enter message to be encrypted: ")
key=0b1010101
print ''.join(chr(key^ord(c)) for c in message)