[日常开发记录] pycurl python3 error(23, 'Failed writing body (0 != 456)') 解决

TypeError: string argument expected, got 'bytes' error(23, 'Failed writing body (0 != 456)')

如果报以上错误，则是以下代码导致

buff = StringIO()
self.curl.setopt(pycurl.WRITEFUNCTION, buff.write)

注意一下python3中StringIO()的包路径为io.StringIO

将以上StringIO()改为:

buff = BytesIO()
self.curl.setopt(pycurl.WRITEFUNCTION, buff.write)

同样的BytesIO()的包路径为io.BytesIO