我是Django的新手，我有一个下面的代码，导致错误如下：
#!/usr/bin/python
"""
Google AJAX Search Module
http://code.google.com/apis/ajaxsearch/documentation/reference.html
"""
try:
import simplejson as json
except:
import json
import urllib
__author__ = "Kiran Bandla"
__version__ = "0.1"
URL = 'http://ajax.googleapis.com/ajax/services/search/web?'
#Web Search Specific Arguments
#http://code.google.com/apis/ajaxsearch/documentation/reference.html#_fonje_web
#SAFE,FILTER
"""
SAFE
This optional argument supplies the search safety level which may be one of:
* safe=active - enables the highest level of safe search filtering
* safe=moderate - enables moderate safe search filtering (default)
* safe=off - disables safe search filtering
"""
SAFE_ACTIVE = "active"
SAFE_MODERATE = "moderate"
SAFE_OFF = "off"
"""
FILTER
This optional argument controls turning on or off the duplicate content filter:
* filter=0 - Turns off the duplicate content filter
* filter=1 - Turns on the duplicate content filter (default)
"""
FILTER_OFF = 0
FILTER_ON = 1
#Standard URL Arguments
#http://code.google.com/apis/ajaxsearch/documentation/reference.html#_fonje_args
"""
RSZ
This optional argument supplies the number of results that the application would like to recieve.
A value of small indicates a small result set size or 4 results.
A value of large indicates a large result set or 8 results. If this argument is not supplied, a value of small is assumed.
"""
RSZ_SMALL = "small"
RSZ_LARGE = "large"
"""
HL
This optional argument supplies the host language of the application making the request.
If this argument is not present then the system will choose a value based on the value of the Accept-Language http header.
If this header is not present, a value of en is assumed.
"""
class pygoogle:
def __init__(self,query,pages=10,hl='en'):
self.pages = pages #Number of pages. default 10
self.query = query
self.filter = FILTER_ON #Controls turning on or off the duplicate content filter. On = 1.
self.rsz = RSZ_LARGE #Results per page. small = 4 /large = 8
self.safe = SAFE_OFF #SafeBrowsing - active/moderate/off
self.hl = hl #Defaults to English (en)
def __search__(self,print_results = False):
results = []
for page in range(0,self.pages):
rsz = 8
if self.rsz == RSZ_SMALL:
rsz = 4
args = {'q' : self.query,
'v' : '1.0',
'start' : page*rsz,
'rsz': self.rsz,
'safe' : self.safe,
'filter' : self.filter,
'hl' : self.hl
}
q = urllib.urlencode(args)
search_results = urllib.urlopen(URL+q)
data = json.loads(search_results.read())
if print_results:
if data['responseStatus'] == 200:
for result in data['responseData']['results']:
if result:
print '[%s]'%(urllib.unquote(result['titleNoFormatting']))
print result['content'].strip("<b>...</b>").replace("<b>",'').replace("</b>",'').replace("'","'").strip()
print urllib.unquote(result['unescapedUrl'])+'\n'
results.append(data)
return results
def search(self):
"""Returns a dict of Title/URLs"""
results = {}
for data in self.__search__():
for result in data['responseData']['results']: // The line causing error
if result:
title = urllib.unquote(result['titleNoFormatting'])
results[title] = urllib.unquote(result['unescapedUrl'])
return results
def search_page_wise(self):
"""Returns a dict of page-wise urls"""
results = {}
for page in range(0,self.pages):
args = {'q' : self.query,
'v' : '1.0',
'start' : page,
'rsz': RSZ_LARGE,
'safe' : SAFE_OFF,
'filter' : FILTER_ON,
}
q = urllib.urlencode(args)
search_results = urllib.urlopen(URL+q)
data = json.loads(search_results.read())
urls = []
for result in data['responseData']['results']:
if result:
url = urllib.unquote(result['unescapedUrl'])
urls.append(url)
results[page] = urls
return results
def get_urls(self):
"""Returns list of result URLs"""
results = []
for data in self.__search__():
for result in data['responseData']['results']:
if result:
results.append(urllib.unquote(result['unescapedUrl']))
return results
def get_result_count(self):
"""Returns the number of results"""
temp = self.pages
self.pages = 1
result_count = 0
try:
result_count = self.__search__()[0]['responseData']['cursor']['estimatedResultCount']
except Exception,e:
print e
finally:
self.pages = temp
return result_count
def display_results(self):
"""Prints results (for command line)"""
self.__search__(True)
if __name__ == "__main__":
import sys
query = ' '.join(sys.argv[1:])
#print pygoogle(' '.join(sys.argv[1:])).display_results()
g = pygoogle(query)
print '*Found %s results*'%(g.get_result_count())
g.pages = 1
g.display_results()
我得到的错误如下：
'NoneType' object has no attribute '__getitem__'
Request Method: POST
Request URL: http://127.0.0.1:8000/search/mytest
Django Version: 1.6.5
Exception Type: TypeError
Exception Value:
'NoneType' object has no attribute '__getitem__'
Exception Location: /home/vinay.hs/Desktop/Semoogle/GUI_search/GUI/keywords/pygoogle.py in search, line 100
Python Executable: /usr/bin/python
Python Version: 2.7.6
第100行引用文件
中的代码for result in data['responseData']['results']:
如何解决此错误