Python - Cycing through a string

Question

I am trying to create a program that cycles through a string, This is what i have so far.

def main():
        name = "firstname lastname"

        for i in name:
            print(name)
            name = name[1::]
main()

This just gives me

firstname lastname
irstname lastname
rstname lastname
stname lastname
tname lastname

and so on till the last letter.

This kind of does what i want but not fully.

What i want this program to do is to print something like this.

firstname lastname
irstname lastname f
rstname lastname fi
stname lastname fir
tname lastname firs
name lastname first
ame lastname firstn 
me lastname firstna

and so on....cycling thorugh the string, but i cant quite get it. Any help please.

Thanks in advance

Answer 1

How about using a double ended queue. They have a dedicated rotate method for this kind of thing:

from collections import deque
s = "firstname lastname"
d = deque(s)
for _ in s:
    print(''.join(d))
    d.rotate()

You can use .rotate(-1) if you want to spin the other direction.

Answer 2

from itertools import cycle
import time
name = "test string"
my_cool_cycle = [cycle(name[i:]+name[:i]) for i in range(len(name))]
while True:
     print "".join(map(next,my_cool_cycle))
     time.sleep(1)

just for fun :P