如何按指定单词数添加换行且不拆分完整单词？

Got it, I see the problem with your current code—it's splitting mid-word because you're counting characters instead of tracking whole words. Let's fix that by rewriting the logic to wrap the text after a set number of complete words instead.

Here's a straightforward solution: #

First, we'll split the input into individual words, then group them into chunks of your desired word count, and finally join those chunks back into lines separated by newlines.

inp = "A very very long string from user input"
words_per_line = 3  # Adjust this number to set how many words per line
words = inp.split()

# Group words into lines of the specified length
lines = []
for i in range(0, len(words), words_per_line):
    line_words = words[i:i + words_per_line]
    lines.append(' '.join(line_words))

# Join all lines with newlines
new_input = '\n'.join(lines)
print(new_input)

What this does: #

• inp.split() breaks the input string into a list of words (using spaces as separators), so we never have to deal with partial words.
• The range(0, len(words), words_per_line) loop steps through the word list in chunks of your chosen size—each chunk becomes one line.
• ' '.join(line_words) turns each chunk back into a string of complete words, and '\n'.join(lines) combines all those lines into the final formatted text.

Example output (with words_per_line = 3): #

A very very
long string from
user input

If you ever need to adjust the number of words per line, just change the value of words_per_line—no other code changes needed!

内容的提问来源于stack exchange，提问作者Thịnh Phạm