How to use the vermin.utility.reverse_range function in vermin

def __add_user_def(self, name):
    if name not in self.__user_defs:
      self.__user_defs.append(name)

    # Remove any modules and members that were added before any known user-definitions. Do it in
    # reverse so the indices are kept while traversing!
    for ud in self.__user_defs:
      for i in reverse_range(self.__modules):
        if self.__modules[i] == ud:
          self.__vvvvprint("Ignoring module '{}' because it's user-defined!".format(ud))
          del(self.__modules[i])

      for i in reverse_range(self.__members):
        if self.__members[i] == ud:
          self.__vvvvprint("Ignoring member '{}' because it's user-defined!".format(ud))
          del(self.__members[i])

def __add_user_def(self, name):
    if name not in self.__user_defs:
      self.__user_defs.append(name)

    # Remove any modules and members that were added before any known user-definitions. Do it in
    # reverse so the indices are kept while traversing!
    for ud in self.__user_defs:
      for i in reverse_range(self.__modules):
        if self.__modules[i] == ud:
          self.__vvvvprint("Ignoring module '{}' because it's user-defined!".format(ud))
          del(self.__modules[i])

      for i in reverse_range(self.__members):
        if self.__members[i] == ud:
          self.__vvvvprint("Ignoring member '{}' because it's user-defined!".format(ud))
          del(self.__members[i])