I am writing a program that is supposed to generates a 26-line block of letters using a loop containing one or two print statements

Question

I am supposed to have an output with the below pattern with 26-line block as shown below.

abcdefghijklmnopqrstuvwxyz
bcdefghijklmnopqrstuvwxyza
cdefghijklmnopqrstuvwxyzab
...
yzabcdefghijklmnopqrstuvwx
zabcdefghijklmnopqrstuvwxy

But I am not getting it right. Please check my code below and help me.

This is my code:

alphabet = "abcdefghijklmnopqrstuvwxyz"
for i in range(26):
    print (alphabet[1: 26] + alphabet[0])

The output:

bcdefghijklmnopqrstuvwxyza
bcdefghijklmnopqrstuvwxyza
bcdefghijklmnopqrstuvwxyza
bcdefghijklmnopqrstuvwxyza
bcdefghijklmnopqrstuvwxyza
bcdefghijklmnopqrstuvwxyza
bcdefghijklmnopqrstuvwxyza
bcdefghijklmnopqrstuvwxyza
bcdefghijklmnopqrstuvwxyza
bcdefghijklmnopqrstuvwxyza
bcdefghijklmnopqrstuvwxyza
bcdefghijklmnopqrstuvwxyza
bcdefghijklmnopqrstuvwxyza
bcdefghijklmnopqrstuvwxyza
bcdefghijklmnopqrstuvwxyza
bcdefghijklmnopqrstuvwxyza
bcdefghijklmnopqrstuvwxyza
bcdefghijklmnopqrstuvwxyza
bcdefghijklmnopqrstuvwxyza
bcdefghijklmnopqrstuvwxyza
bcdefghijklmnopqrstuvwxyza
bcdefghijklmnopqrstuvwxyza
bcdefghijklmnopqrstuvwxyza
bcdefghijklmnopqrstuvwxyza
bcdefghijklmnopqrstuvwxyza

Asked By: Kingsley

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Source

Answer 1

The Python standard library has a handy list-like data structure called a deque (pronounced like "deck"). It is a double ended queue that has a useful method, rotate, that shifts the contents of its elements. It will make short work of your task:

from collections import deque
import string

alphabet = deque(string.ascii_lowercase)
for _ in range(len(alphabet)):
    print("".join(alphabet))
    alphabet.rotate(-1)

Output:

abcdefghijklmnopqrstuvwxyz
bcdefghijklmnopqrstuvwxyza
cdefghijklmnopqrstuvwxyzab
defghijklmnopqrstuvwxyzabc
...

Answered By: rhurwitz

Answer 2

Your problem: you are always printing the same string, namely alphabet[1:26] + alphabet[0].

Instead use:

alphabet = "abcdefghijklmnopqrstuvwxyz"
for i in range(26):
    print(alphabet[i : 27] + alphabet[0 : i]

Notice how i keeps getting larger as we run through the string and how this impacts that starting character.

Answered By: py_math

I am writing a program that is supposed to generates a 26-line block of letters using a loop containing one or two print statements

Question:

Answers: