Генератор имен сайтов

from itertools import combinations_with_replacement
 
i = 2
while i <= 63:
            for item in combinations_with_replacement('abcdefghijklmnopqrstuvwxyz1234567890', i):
                 str = ''.join(item)
                 with open('spisok.txt', 'a', encoding='utf-8') as f:
                      print(f'http://{str}.com', file=f)

from itertools import combinations_with_replacement
 
for item in combinations_with_replacement('abc', 3):
                 str = ''.join(item)
                 with open('spisok.txt', 'a', encoding='utf-8') as f:
                      print(f'{str}', file=f)

import itertools
 
i = 2
while i <= 63:
    for item in itertools.product("abcdefghijklmnopqrstuvwxyz1234567890", repeat=i):
        str = ''.join(item)
        namefile = ''.join(item[0]) + '.txt'
        with open(namefile, 'a', encoding='utf-8') as f:
            print(f'{str}', file=f)
 
    i = i + 1

import itertools
 
i = 2
while i <= 63:
    for item in itertools.product("abcdefghijklmnopqrstuvwxyz1234567890", repeat=i):
        str = ''.join(item)
        namefile = ''.join(item[0]) + '.txt'
        with open(namefile, 'a', encoding='utf-8') as f:
            print(f'{str}', file=f)
 
    i = i + 1

a = 'abcdefghijklmnopqrstuvwxyz1234567890'
for ch in a:
    with open(ch + '.txt', 'w', encoding='utf-8') as f:
        for i in range(1, 4):
            for item in itertools.product(a, repeat=i):
                f.writelines('%s%s\n' % (ch,''.join(item)))