code: def acp_users_delete():
      
      if not current_user.is_admin:
          return error("Not authorized to edit users.", 401)
      if not db:
          return error('The ACP is not available in single-user mode.', 500)
  
      form = UserDeleteForm()
      if not form.validate():
          return error("Bad Request", 400)
      user = get_user(int(request.form['uid']))
      direction = request.form['direction']
      if not user:
          return error("User does not exist.", 404)
      else:
          for p in PERMISSIONS:
              setattr(user, p, False)
          user.active = direction == 'undel'
          write_user(user)
          return redirect(url_for('acp_users') + '?status={_del}eted'.format(
              _del=direction))
docs: Delete or undelete an user account.