Python 如何 发送 multiipart 上传文件？

Question

上传的参数如下

----------------------------119938005516990736431240663742
Content-Disposition: form-data; name="_csrf"

pvlVVBZkGPROBe1zHHx17fc5VKtVMcLMGS6TKFn82HPFjgMBeCsvnXtf3SksKELVmm4tziJFipMoSPp3Ds2SQA==
-----------------------------119938005516990736431240663742
Content-Disposition: form-data; name="ReportForm[url]"

-----------------------------119938005516990736431240663742
Content-Disposition: form-data; name="ReportForm[url]"; filename="å¼€å‘çŽ¯å¢ƒå’Œé¢„ä¸Šçº¿çŽ¯å¢ƒçš„ä»£ç åŒæ­¥.pdf"
Content-Type: application/pdf

我是这样写的，为啥总是上传pdf 上不上去呢？因为服务器总是显示上传text？

files=[("ReportForm[url]",('齐家网COO毛新勇：《未来平台赋能是必然，但要真刀真枪才有意义》-18页.pdf',open(file,'rb'),'Content-Type: application/pdf'))]
data={"_csrf":csrf_token}
headers = {
        'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36',
        }

response=requests.post(url=url,cookies=cookies,files=files,data=data,headers=headers)