如何在 Python 中打印动态字符串？

Question

How to print dynamic string in Python?

Example:

n1 = 1
while n1 < 20:
    print(f"{n1} word from 20 scanned")
    n1 += 1

Don't print retry text !

I want to update n1 value

Answer 1

What you might be looking for is \r , or carriage return, it moves the cursor in the terminal to the start of the line. That way, the text can be rewritten when new text is printed.

n1 = 1
while n1 < 20:
    print(f"\r{n1} word from 20 scanned", end="")
    n1 += 1

Explanation:

| <- cursor
1 word from 20 scanned| <- write the first line  
|1 word from 20 scanned <- cursor moves to the start(\r)  
2 word from 20 scanned| <- rewrite