How to extract random words from .txt file using python?

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I have a .txt file that looks like this:

Title       | Author

title1      | author1

title2      | author2

...        ...

titleN      | authorN

I want to extract 100 random titles from this file, like this:





I tried this:

import random
with open('file.txt','r') as f:
  title ='|')

for i in range (0,100):

But during the execution, the program prints also random authors name. How can I avoid this?

When you do this:

with open(path,'r') as f:
    title ='|') gives you the whole files as a string. Splitting that on | gives a list with both authors and titles (and new lines and spaces).

Instead, you can process the lines and split as you go. With something like:

with open(path) as f:
    titles = [l.split('|')[0].strip() for l in f]

This will give you a clean list of titles like:

['title1', 'title2', 'title3', 'title4', 'title5']

With that you can use random.sample() to get however many random items you want.

import random

path = "path/to/file.txt"
n = 100

with open(path) as f:
    titles = [l.split('|')[0].strip() for l in f]

random.sample(titles, n)

This assumes you don't want duplicates.

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You can use .readlines() instead of .read() to read the file line by line to a list. Then you can use .split('|')[0].strip() after when you've selected a random row, to only show the title part of it:

import random

with open('file.txt', 'r') as f:
    title = f.readlines()

for i in range(0, 100):
    choice = random.choice(title)

Alternatively you can process the file immediately after you've read it:

import random

with open('file.txt', 'r') as f:
    title = [line.split('|')[0].strip() for line in f.readlines()]

for i in range(0, 100):

Here's a demonstration how the .split('|')[0].strip() works:

>>> choice = "title1      | author1"
>>> choice.split('|')
['title1      ', ' author1']
>>> choice.split('|')[0]
'title1      '
>>> choice.split('|')[0].strip()

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Have a look at title after you read it in. If my text file is

title1 | author1
title2 | author2

title will be ['title1 ', ' author1\ntitle2 ', ' author2\n']. Randomly choosing from this list will sometimes give you titles, sometimes authors, and sometimes both.

A better approach would something like the following:

import random

# read in the file and split lines
with open("file.txt", "r") as f:
    lines =
# lines = ["title1 | author1", "title2 | author2"]

titles = [line.split("|")[0].strip() for line in lines]
# titles = ["title1", "title2"]

Note that we need to call strip to strip any extra whitespace off the ends of the title.

You can now proceed with your sampling, but I suspect that you want 100 unique titles and not just 100 random titles. What you are doing is called sampling with replacement, and getting unique titles would be sampling without replacement. You can accomplish this with random.sample as follows (see the random docs):

print(*(random.sample(titles, 100)), sep = "\n")

or equivalently with more familiar syntax

for samp_title in random.sample(titles, 100):

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  • Do you want the possibility of duplicates?
  • Thank you for the answer, this helped a lot!
  • Thank you for your answer!
  • Sure thing. Make sure to mark one of the answers as the definitive answer if you're satisfied. I think all three of us basically said the same thing, so your choice ;)