A simple example of using ANSI escapes to move around the screen and draw

cursor-move.py

import sys
import tty
import termios
import os

s = os.get_terminal_size()
ROWS = s.lines
COLS = s.columns

print('\n'*ROWS)

try:
  fd = sys.stdin.fileno()
  old_settings = termios.tcgetattr(fd)
  tty.setraw(sys.stdin)

  toggle = False
  dc = ''
    
  while True: # loop for each character
    char = ord(sys.stdin.read(1)) # read one char and get char code
    if char == 0x03:
      break

    elif char == ord('d'):
      toggle = not toggle
      dc = '•\u001b[1D' if toggle else ''

    elif char == 27:
      next1, next2 = ord(sys.stdin.read(1)), ord(sys.stdin.read(1))
      if next1 == 91:
        if next2 == 65: # Up
          sys.stdout.write(f"{dc}\u001b[1A")
          sys.stdout.flush()
        elif next2 == 66: # Down
          sys.stdout.write(f"{dc}\u001b[1B")
          sys.stdout.flush()
        elif next2 == 67: # Right
          sys.stdout.write(f"{dc}\u001b[2C")
          sys.stdout.flush()
        elif next2 == 68: # Left
          sys.stdout.write(f"{dc}\u001b[2D")
          sys.stdout.flush()
        else:
          print(next2)
    else:
      print(char)


finally:
  termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)
  print()