For some reason the replit module isn't preinstalled anymore, so you have to add the replit module using the package section at the sidebar before importing.

1) Add the replit package
2) import clear function from replit module
3) Use it!

An example:

from replit import clear

for _ in range(100):
  print("x" * 20)

_clear = input("Clear terminal? Y or N: ")
if _clear in ["y", "Y"]:
  clear()