为什么我得到其他所有线路？

Question

I am trying to create a Python code for counting the number of words per line of a text.

My text consists of the following movie titles:

We Still Steal the Old Way
Demon
Immortal Wars
The Portal
Selfie from Hell
The Bad Nun
Astro
Diggerz: Black Lung Rises
Battle Drone
How to Train Your Dragon 3

The code I created is as follows:

f = open('C:/movies/sample06.txt') 
for x in f: 
    line = f.readline()
    print(line, end='')
    words = line.split(" ")
    print(words)
    num_words = len(words)
    print(num_words)

And what I get is:

Demon
['Demon\n']
1

The Portal
['The', 'Portal\n']
2

The Bad Nun
['The', 'Bad', 'Nun\n']
3

Diggerz: Black Lung Rises
['Diggerz:', 'Black', 'Lung', 'Rises\n']
4

How to Train Your Dragon 3
['How', 'to', 'Train', 'Your', 'Dragon', '3\n']
6

My question is: How can I get the results for each and every movie title above? The result here showed the results of every other movie title.

Answer 1

Your code starts with:

f = open('C:/movies/sample06.txt') 
for x in f: 
    line = f.readline()

You iterate on your file f line by line in the for loop. But as soon as the next line in the file got read into x , you read the following one into line . As you don't do anything with x , this line gets lost.

So, you don't have to use readline() to iterate on the lines of your file. Just do:

with open('C:/movies/sample06.txt') as f: 
    for line in f: 
        print(line, end='')
        words = line.split(" ")
        print(words)
        num_words = len(words)
        print(num_words)

Note the with open.... idiom that guarantees that your file gets closed whatever happens in your script.