爬虫1

#练习入门
import urllib.request
response = urllib.request.urlopen("http://blog.fishc.com/")
html = response.read()
print(html)

#爬虫图片
import urllib.request
response = urllib.request.urlopen("http://placekitten.com/g/500/600")
cat_img = response.read()
with open('cat_500_600','wb')as f:
    f.write(cat_img)'''

#有道翻译
import urllib.request
import urllib.parse  #parse解析
import json
while True:
    content = input("请输入需要翻译的内容（按q!退出程序）：")
    if content == 'q!':
        break
    url = 'http://fanyi.youdao.com/translate?smartresult=dict&smartresult=rule'
    data = {}
    data['i']= content
    data['from']='AUTO'
    data['to']='AUTO'
    data['smartresult']='dict'
    data['client']='fanyideskweb'
    data['salt']=1513569368760
    data['sign']='de9f67e5eb175603a1a18ab02d28da35'
    data['doctype']='json'
    data['version']='2.1'
    data['keyfrom']='fanyi.web'
    data['action']='FY_BY_REALTIME'
    data['typoResult']='false'
    #encode硬编码
    data = urllib.parse.urlencode(data).encode('utf-8')
    response = urllib.request.urlopen(url,data)
    #将接收来的utf-8页面解码为unicode
    html = response.read().decode('utf-8')
    #打印出来的是字典格式
    #print(html)
    target = json.loads(html)
    print("翻译结果是：%s" % (target['translateResult'][0][0]['tgt']))

练习有道翻译时，遇见两个坑，一个是url里面_o不去掉的话报错为：50，第二是我把content变量加了单引号，变成了字符串。