#!/usr/bin/env python
# -*- coding: utf-8 -*-
# @Time : 2020/02/11 21:44
# @Author : dangxusheng
# @Email : dangxusheng163@163.com
# @File : download_by_href.py
'''
自动从arxiv.org 下载文献
'''
import os
import os.path as osp
import requests
from lxml import etree
from pprint import pprint
import re
imp
