关于Python审查函数中words[count] = stars语句含义的技术问询

Hey there! Let's break down that line of code step by step, since you're just starting out with programming.

First, let's recap the context of the code you're looking at—this function is meant to censor a specific word in a text by replacing it with asterisks of the same length:

def censor(text, word):
    words = text.split()
    result = ''
    stars = '*' * len(word)
    count = 0
    for i in words:
        if i == word:
            words[count] = stars
            count += 1
    result = ' '.join(words)
    return result

Now, let's focus on line 8: words[count] = stars

Here's what it does:

• words is a list of all individual words from the original text (created by splitting the input text with text.split()).
• count acts as a tracker for our current position (index) in the words list as we loop through each word.
• stars is a string of asterisks that matches the exact length of the word we need to censor (for example, if word is "dog", stars becomes "***").

When the loop finds a word (i) that matches the censored target word, this line replaces the element at index count in the words list with the asterisk string. In plain terms, it swaps out the forbidden word for its censored, asterisk-based version directly in the original list of words.

A quick side note: This code has a small quirk—if the current word doesn't match the censored word, count doesn't get incremented. That means it might behave unexpectedly for texts where non-censored words come before the target word. But that's a separate detail; the core meaning of that line is exactly what we covered above.

内容的提问来源于stack exchange，提问作者 Chua