How to display all words that contain these characters?

Question

I have a text file and I want to display all words that contains both z and x characters.

How can I do that ?

Answer 1

I do not know the performance of this generator, but for me this is the way:

from __future__ import print_function
import string

bookfile = '11.txt' # Alice in Wonderland
hunted = 'az' # in your case xz but there is none of those in this book

with open(bookfile) as thebook:
    # read text of book and split from white space
    print('\n'.join(set(word.lower().strip(string.punctuation)
                    for word in thebook.read().split()
                    if all(c in word.lower() for c in hunted))))
""" Output:
zealand
crazy
grazed
lizard's
organized
lazy
zigzag
lizard
lazily
gazing
""

"