Sort Words In Sequence Order In Which They Were Saved

how to sort words in sequence order in which they were saved in text file, just add new line from below and save same sequence after remove same words. if I add one by one words w

Solution 1:

lines_set = {line.strip() for line in lines}

This is creating a set object for you, and sets do not have any order. I'd use a list for this task to preserve the order they are added:

withopen('D:\path\file.txt', 'r') as lines:   
    lines_set = []
    for line in lines:
        if line.strip() notin lines_set:  # Keep only unique words
            lines_set.append(line.strip())

Lines need to be iterated through the long way like this so that only the unique words can be kept.

Solution 2:

First of all it is a good idea to update your question if it changed. Most people do not read all comments under the answers to find your problem.

Now to your question:

It is often a good idea to analyse the code line by line.

import random                               # In this code snippet it is not used?print ('Write word : ')                     # printing something

text = input ('')                           # get some input -> text

data = open ('D:\path\file.txt', 'a')       #open new file (appending)
data.write (text)                           # write user input at file ending
data.write('\n')                            # write line break at file ending

Wait! You want only append a line if it not exists already...

So let us include a test for that

print ('Write word : ')

text = input('')
data = open ('file.txt', 'a')         #Add new word to new linewithopen('file.txt', 'r') as lines:
    if text.strip() notinmap(str.strip, lines):  # Keep only unique words
        data.write(text)
        data.write('\n')

data.close()

That will check if the line already exists. Maybe the map function is a little bit confusing, but it only applies the function strip to all lines in the file to get rid of extra space and new line characters.

Now it should work :)