python中如何使用urllib 和 json 模块

urllib 和 json 模块

输入：

#!/usr/bin/python

# Filename: yahoo_search.py

import sys

if sys.version_info[0] != 3:

sys.exit('This program needs Python 3.0')

import jsonimport urllib, urllib.parse, urllib.request, urllib.response

# Get your own APP ID at http://developer.yahoo.com/wsregapp/

YAHOO_APP_ID=jl22psvV34HELWhdfUJbfDQzlJ2B57KFS_qs4I8D0Wz5U5_yCI1Awv8.lBSfPhwr'

SEARCH_BASE='http://search.yahooapis.com/WebSearchService/V1/webSearch'

class YahooSearchError(Exception):

pass

# Taken from http://developer.yahoo.com/python/python-json.html

def search(query, results=20, start=1, **kwargs):

kwargs.update({ 'appid': YAHOO_APP_ID,

'query': query, 'results': results,

'start': start, 'output': 'json'

})

url = SEARCH_BASE + '?' + urllib.parse.urlencode(kwargs)

result = json.load(urllib.request.urlopen(url))

if 'Error' in result:

raise YahooSearchError(result['Error'])

return result['ResultSet']

query = input('What do you want to search for? ')

for result in search(query)['Result']:

print("{0} : {1}".format(result['Title'], result['Url']))

输出：

$ python yahoo_search.py

What do you want to search for?