Python File I/O: List English alphabet in a file by specified number of letters on each line

Last update on April 22 2025 12:53:40 (UTC/GMT +8 hours)

21. Alphabet Lines File

Write a Python program to create a file where all letters of English alphabet are listed by specified number of letters on each line.

Sample Solution:

Python Code:

import string
def letters_file_line(n):
   with open("words1.txt", "w") as f:
       alphabet = string.ascii_uppercase
       letters = [alphabet[i:i + n] + "\n" for i in range(0, len(alphabet), n)]
       f.writelines(letters)
letters_file_line(3)

Output:

words1.txt
ABC
DEF
GHI
JKL
MNO
PQR
STU
VWX
YZ

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Python program to create a file that lists all letters of the English alphabet with a specified number of letters per line.
• Write a Python script to generate a file where each line contains a repeated letter (e.g., "AAAA") with a user-defined count.
• Write a Python program to create a file with the alphabet where each line has a random number of letters but at least a given minimum, then sort the lines.
• Write a Python program to generate a text file that outputs the alphabet progressively (first line A, second line AB, etc.) and then reverse the order of the lines.

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Python Code Editor:

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