只有一个单词正在从.txt 文件中读取

Question

I am building a BlogApp and I am implementing a Feature,

What i am trying to do:-

I am trying to read and work on .txt file BUT when i write one word then it works fine BUT when i write two words then it is not working.

views.py

def defining(request):
    with open('wordlists.txt') as in_file:
        wordlist = in_file.read().splitlines()
    
    posts = Post.exclude.exclude(reduce(operator.and_,(Q(description__contains=x) for x in wordlist)))


    context = {'posts':posts}
    return render(request, 'defining.html', context)

wordlists.txt

good
bad

When i add good word ( only one word ) then it works fine BUT when i add bad after good then both doesn't work.

I have no idea, where is the mistake. Any help would be Appreciated. Thank You in Advance.

Answer 1

I used operator._or instead of operator.and__ AND IT WORKED CORRECTLY.

Where operator.or_ ?

from django.db.models import Q
from functools import reduce

def defining(request):
    with open('wordlists.txt') as in_file:
        wordlist = in_file.read().split()

    posts = Post.objects.exclude(reduce(operator.or_,(Q(description__contains=x) for x in wordlist)))

HERE----------------------------------------------^

Answer 2

You should use operator._or as reducer, not operator._and , since you want to exclude that contain the word good, or the word bad, et.

You do not need to work with reduce , since Django has defined some arithmetic for Q objects. You can define this as:

posts = Post.objects.exclude(
    Q(
        *[Q(description__contains=x) for x in wordlist],
        
    )
)