检测pdf文档是否加密

#!/usr/bin/python
# encoding:utf-8



import urllib2, json, urllib
dict ={}



dict['file_id'] = 'signed-30bfb87dd63a4c7a5f720dbbbd7c2b2b-9808d27b-0004';
url = "https://api-v2.1dq.com/v5/Tool/checkFileEncryption.json + "?" + urllib.urlencode(dict)
result = urllib2.urlopen(urllib2.Request(url))
jsonarr = json.loads(result.read())
#  输出错误码
print jsonarr["code"]