方法一：读取上传的
    参考：https://stackoverflow.com/questions/58288497/how-do-i-receive-an-excel-file-as-input-using-flask-and-read-it-using-openpyxl
    html 代码：

    1. <form action="{% url 'article_list_import' %}" method="POST" enctype="multipart/form-data">
    2.   {% csrf_token %}
    3.   <input type="file" id="article_list" name="article_list">
    4.   <input type="submit" value="Submit">
    5. </form>

    View.py 代码

    1. def article_list_import(request):
    2.     if request.method == 'POST':
    3.         try:
    4.             article_list_file = request.FILES.get('article_list')
    5.             from openpyxl import load_workbook
    6.             wb = load_workbook(filename=article_list_file)
    7.         except:
    8.             pass

    方法二：上传到临时文件路径
    参考：https://www.jianshu.com/p/61ecb53acbf7