code: def delete(user_id):
          '''
          Delele the  user in the database by `user_id`.
          '''
          try:
              del_count = TabMember.delete().where(TabMember.uid == user_id)
              del_count.execute()
              return True
          except:
              return Falsf delete(user_id):
          '''
          Delele the  user in the database by `user_id`.
          '''
          try:
              del_count = TabMember.delete().where(TabMember.uid == user_id)
              del_count.execute()
              return True
          except:
              return False
docs: Delele the  user in the database by `user_id`.