七牛sdk python mineLimit 参数配置 word(doc,docx),excel(xls,xlsx),图片，pdf 文件类型

"mimeLimit": "
image/*;application/msexcel;
application/msword;
application/vnd.openxmlformats-officedocument.wordprocessingml.document;
application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;
application/pdf
"