python请求将字符串作为文件发送 [英] python requests send string as file

问题描述

在我的代码中，我目前正在将一个文件分块并将其读取到一个临时文件中，然后将此临时文件传递到请求中.有没有办法仍然发送这个

 with open(full_path, 'r+b') as f:我=0而真:块 = f.read(max_chunk_size)如果不是块:休息使用 tempfile.TemporaryFile() 作为 t:t.write(块)t.seek(0)r = requests.post(endpoint + 'upload_chunk',files={'chunk':t},数据={'mod_time':file_update_time,'目录':'/'.join(子目录)，'文件名':文件名，'chunk_pos':i},认证=认证)i+=max_chunk_size

有没有办法将块发送到服务器而不将其写入临时文件，然后在 requests.post 中读取此文件?我更喜欢不必更改服务器端代码.我想不必读/写额外的 4 兆字节会提高执行速度.

需要对文件进行分块；此代码尚未完成.

解决方案

阅读请求 快速入门页面，位于POST 一个多部分编码的文件 部分.

在这里你会发现:

<块引用>

如果你愿意，你可以发送字符串作为文件接收:

<预><代码>>>>url = 'http://httpbin.org/post'>>>files = {'file': ('report.csv', 'some,data,to,send another,row,to,send ')}>>>r = requests.post(网址，文件=文件)>>>r.text{...文件":{文件":一些，数据，到，发送\纳米，行，到，发送\ n"},...}

请注意，"file" 是服务器期望的文件上传字段的名称.它将对应于以下 HTML:

In my code I am currently chunking up a file and sending reading it into a temporary file, then passing this temporary file into requests. Is there a way to still send this

with open(full_path, 'r+b') as f:
  i=0
  while True:
  chunk = f.read(max_chunk_size)
  if not chunk:
    break
  with tempfile.TemporaryFile() as t:
    t.write(chunk)
    t.seek(0)
    r = requests.post(endpoint + 'upload_chunk',
                      files={'chunk':t},
                      data={'mod_time':file_update_time,
                            'directory':'/'.join(subdirs),
                            'filename':filename,
                            'chunk_pos':i},
                      auth=auth)
    i+=max_chunk_size

Is there a way to send the chunk to the server without writing it to a temporary file, then having something in requests.post read this file? I'd much prefer to not have to change the server-side code. I'd imagine not having to read/write an extra 4 megabytes would increase execution speed.

Chunking up the file is necessary; this code is not yet complete.

解决方案

Have a read through the Requests Quickstart page, under the POST a Multipart-Encoded File section.

There you'll find this:

If you want, you can send strings to be received as files:

>>> url = 'http://httpbin.org/post'
>>> files = {'file': ('report.csv', 'some,data,to,send
another,row,to,send
')}

>>> r = requests.post(url, files=files)
>>> r.text
{
  ...
  "files": {
    "file": "some,data,to,send\nanother,row,to,send\n"
  },
  ...
}

Note that "file" is the name of the file upload field the server is expecting. It would correspond to the following HTML:

<input type="file" name="file">

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