Написать код,который будет заменять несколько дубликатов слова,стоящих в 1 строке на 1 такое слово

string1 = "stop please please stop do do so shitty topics on on this forum please" # здесь твоя строка
words = string1.split()
print (" ".join(sorted(set(words), key=words.index)))

with open("имя файла.расширение") as string:

f = open(<file>, 'r+')
string = f.read()

f.close()

f1 = open('result.txt', 'w')
f1.write(string)
f1.close

from itertools import groupby
 
s = "stop please please stop do do so shitty topics on on this forum please"
print(' '.join(k for k, _ in groupby(s.split())))

fileName = os.path.basename(f.name)

f = open("file1.txt", 'r+')
string = f.read()
words = string.split()
print (" ".join(sorted(set(words), key=words.index)))
f1 = open('result.txt', 'w')
f1.write(string)
f1.close

os.remove(fileName)

import os
 
 
f = open('myfile.txt', 'r')
string1 = f.read()
words = string1.split()
 
stringResult = (" ".join(sorted(set(words), key=words.index)))
 
fileName = os.path.basename(f.name)
os.remove(fileName)
 
f1 = open(fileName, 'w')
f1.write(stringResult)
 
f1.close()

with open('input.txt', 'r', encoding='utf-8') as f1:
    arr = f1.read().splitlines()
with open('input.txt', 'w', encoding='utf-8') as f2:
    for x in arr:
        s = x.split()
        f2.write(' '.join(s[i] for i in range(len(s)) if i == 0 or s[i] != s[i-1]) + '\n')