Pycurl和io.StringIO - pycurl.error:(23,'写失败的身体) [英] Pycurl and io.StringIO - pycurl.error: (23, 'Failed writing body)

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问题描述

我正在将ebay sdk移植到python3,我偶然发现了以下问题。



我使用pycurl发送一些HTTP请求。
这是我如何配置它:

  self._curl = pycurl.Curl()
self。 _curl.setopt(pycurl.FOLLOWLOCATION,1)
self._curl.setopt(pycurl.URL,str(request_url))
self._curl.setopt(pycurl.SSL_VERIFYPEER,0)

self._response_header = io.StringIO()
self._response_body = io.StringIO()

self._curl.setopt(pycurl.CONNECTTIMEOUT,self.timeout)
self._curl.setopt(pycurl.TIMEOUT,self.timeout)

self._curl.setopt(pycurl.HEADERFUNCTION,self._response_header.write)
self._curl.setopt(pycurl .WRITEFUNCTION,self._response_body.write)

当我调用self._curl.perform以下错误:

  pycurl.error:(23,'写错身体(1457!= 1460)')

据我所知,这意味着写函数有一个问题,它是什么。可能与从StringIO模块迁移到io有关,但我不确定。



UPD
如下:

  def body(buf):
self._response_body.write(buf)

def header(buf):
self._response_header.write(buf)

self._curl.setopt(pycurl.HEADERFUNCTION,header)
self._curl.setopt (pycurl.WRITEFUNCTION,body)

我试图做同样的伎俩与lambdas(而不是定义那些尴尬的功能,但它没有工作。

解决方案

我相信问题是pycurl不再像以前一样使用StringIO了,一个解决方案是使用io.BytesIO,然后你可以把信息写入缓冲区并解码成字符串。



使用BytesIO与pycurl而不是StringIO:

  e = io.BytesIO()
c.setopt(pycurl.WRITEFUNCTION,e.write)

从BytesIO对象解码字节信息: / p>

  htmlString = e.getvalue()。decode('UTF-8')



您可以使用任何类型的解码,但这应该提供一个您可以解析的字符串对象。



希望这有助于人们使用Python 3。


I'm porting ebay sdk to python3 and I've stumbled upon the following issue.

I'm using pycurl to send some HTTP requests. Here is how I configure it:

    self._curl = pycurl.Curl()
    self._curl.setopt(pycurl.FOLLOWLOCATION, 1)
    self._curl.setopt(pycurl.URL, str(request_url))
    self._curl.setopt(pycurl.SSL_VERIFYPEER, 0)

    self._response_header = io.StringIO()
    self._response_body = io.StringIO()

    self._curl.setopt(pycurl.CONNECTTIMEOUT, self.timeout)
    self._curl.setopt(pycurl.TIMEOUT, self.timeout)

    self._curl.setopt(pycurl.HEADERFUNCTION, self._response_header.write)
    self._curl.setopt(pycurl.WRITEFUNCTION, self._response_body.write)

When I call self._curl.perform() I get the following error:

pycurl.error: (23, 'Failed writing body (1457 != 1460)')

As far as I know this means that there is an issue with the write function, but I can't figure out what it is exactly. Could be related to migration from StringIO module to io, but I'm not sure.

UPD: I've tried the following:

    def body(buf):
        self._response_body.write(buf)

    def header(buf):
        self._response_header.write(buf)

    self._curl.setopt(pycurl.HEADERFUNCTION, header)
    self._curl.setopt(pycurl.WRITEFUNCTION, body)

and it works. I've tried to do the same trick with lambdas (instead of defining those awkward function, but it didn't work.

解决方案

I believe the problem is that pycurl no longer functions with StringIO like desired. A solution is to use io.BytesIO instead. You can then get information written into the buffer and decode it into a string.

Using BytesIO with pycurl instead of StringIO:

e = io.BytesIO()
c.setopt(pycurl.WRITEFUNCTION, e.write)

Decoding byte information from the BytesIO object:

htmlString = e.getvalue().decode('UTF-8')

You can use any type of decoding you want, but this should give you a string object you can parse.

Hope this helps people using Python 3.

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