I'm executing code in python and want to update my status by rewriting the current line on the output. Example:
import time
print("1 a a a", end="\r")
time.sleep(1) #placeholder for doing stuff
print("2 a a a", end="\r")
time.sleep(1) #placeholder for doing stuff
print("3 a a a", end="\r")
time.sleep(1) #placeholder for doing stuff
print("BBBB")
print("c")
Now the output of this Code is
BBBBa a
c
How can I alter my code to have the following output?
BBBB
c
Thank you.
\r only moves the cursor; it doesn't delete text per se, it only provides the opportunity to overwrite existing text.
Pretty much anything you try will be terminal-dependent, but usually you are using one that uses ANSI escape sequences. One such sequence can be used to clear the current line.
import time
print("\x1b[K1 a a a", end="\r")
time.sleep(1) #placeholder for doing stuff
print("\x1b[K2 a a a", end="\r")
time.sleep(1) #placeholder for doing stuff
print("\x1b[K3 a a a", end="\r")
time.sleep(1) #placeholder for doing stuff
print("\x1b[KBBBB")
print("c")
\x1b[K clears from the current cursor position to the end of the current line.
Libraries like ncurses can be used for terminal-independent handling of the screen.