如何删除一些输出行？（不使用 os.system('cls')）

Question

I want edit some(More than one line) of the last lines in output. But I have a lot of lines before them that clearing and reprinting all them slows down my program (I can't use '\\r' Because the lines I want to edit are more than one line).

print("Lots of lines")
print("Lines to be edited\nLines to be edited")

Answer 1

You can use:

print ("\033[A                             \033[A")

it clears one line from the output. Below you can see example of how it works:

print("Hello world\n xxx \n xxx")

print ("\033[A                             \033[A")
print ("\033[A                             \033[A")

Output:

Hello world

I wanted to clear two output lines containing xxx so I printed it twice.

You can play with it and make some for loops etc.

Please note that on Windows you may need to enable the ANSI support using the following http://www.windowsnetworking.com/kbase/windowstips/windows2000/usertips/miscellaneous/commandinterpreteransisupport.html

"\\033[A" string is interpreted by terminal as move the cursor one line up.