python 使用poster模块进行http方式的文件传输到服务器的方法

from poster.encode import multipart_encode
from poster.streaminghttp import register_openers
import urllib2

def upload_file(url,upload_file_path,filename):
 register_openers()
 datagen, headers = multipart_encode({"file": open(upload_file_path, "rb"),"type":"uploadFile","filename":filename})
 request = urllib2.Request(url, datagen, headers)
 return urllib2.urlopen(request).read()

with open(full_path,'wb+') as f:
 for chunk in request.FILES.get('file').chunks():
 f.write(chunk)