\\r 和 \\b 在 Python 中不起作用？ （如何擦除一行？）

Question

In the new python /r and /b don't work (I am using windows 10 and repl.it)

Is there an easy way to make a line look like its backspacing itself?

import sys
print("FAILED...")
sys.stdout.write("\033[F") #back to previous line
sys.stdout.write("\033[K") #clear line
print("SUCCESS!")

doesn't work either /\\ |

Answer 1

The interpretation of the control characters depends entirely on the rendering engine for the target device. For instance, if you're writing to a paper-based output -- say, an archaic teletype 33 terminal -- there's no way you can erase text. Device drivers differ in what controls they support and how.

You need to check the documentation for the device, whether an xterminal, a command window, or whatever -- how does that channel interpret those characters?