对于网页中Content-Type: multipart/form-data的文件上传接口，使用python可以如下这样请求：
import requests
url = 'example.com'
headers = {
'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.66 Safari/537.36'
}
file = 'example.xlsx'
requests.post(url, headers=headers, files={'file': (file, open(file, 'rb'))})
