the request was rejected because no multipart boundary was found；上传文档使用 application/octet-stream 兼容 或者直接省略content-type

import requests
from http.client import HTTPConnection
HTTPConnection.debuglevel=1


import requests
# 请求url
url = "http://ip:port/file"
# 请求头
headers = {
        'Authorization': '.rF7ctEMcLrNCfm65HVGnfRgNiAKyuIM...'
}
# 上传文件的参数
files = {
        "file": ("1.png", open("2.jpg", "rb"), "application/octet-stream")
    # "file":  open("1.png", "rb")
    }

# 发送请求
response = requests.post(url=url, headers=headers, files=files )
# 打印结果
print(response.text)

 https://docs.python-requests.org/en/latest/user/quickstart/#make-a-request

 https://www.w3cschool.cn/requests2/requests2-mr8f3fje.html