<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def cleanup():
 """Delete standard installation directories."""

        for install_dir in linters.INSTALL_DIRS:
            try:
                shutil.rmtree(install_dir, ignore_errors=True)
            except Exception:
                print(
                    "{0}\nFailed to delete {1}".format(
                        traceback.format_exc(), install_dir
                    )
                )
                sys.stdout.flush()