学习爬虫添加user-agent出错

houxilan

之前正常，添加user-agent后就出错了。

1. import urllib.request
   
2. import urllib.parse
   
3. import json
   
4. 
   
5. while True:
   
6.     source = input('请输入你要翻译的内容（中/英）：')
   
7.     if source in ['exit', 'quit']:
   
8.         print('Bye!')
   
9.         break
   
10.     url = 'http://fanyi.youdao.com/translate?smartresult=dict&smartresult=rule&smartresult=ugc&sessionFrom=dict2.index'
    
11.     data = {}
    
12.     data['type'] = 'AUTO'
    
13.     data['i'] = source
    
14.     data['doctype'] = 'json'
    
15.     data['xmlVersion'] = '1.8'
    
16.     data['keyfrom'] = 'fanyi.web'
    
17.     data['ue'] = 'UTF-8'
    
18.     data['action'] = 'FY_BY_CLICKBUTTON'
    
19.     data['typoResult'] = 'true'
    
20. 
    
21.     data = urllib.parse.urlencode(data).encode('utf-8')
    
22. 
    
23.     head = {}
    
24.     head['User-Agent'] = 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2873.0 Safari/537.36'
    
25.    
    
26.     req = urllib.request.urlopen(url, data, head)
    
27.     html = req.read().decode('utf-8')
    
28.     result_dict = json.loads(html)
    
29.     result = ''
    
30.     for each in result_dict['translateResult'][0]:
    
31.         result += each['tgt']
    
32.         
    
33.     print('翻译结果为：' + result)

复制代码

TypeError: a float is required，提示一堆，怎么确定哪个地方需要float？谢谢！

SixPy

def urlopen(url, data=None, timeout=socket._GLOBAL_DEFAULT_TIMEOUT,
            *, cafile=None, capath=None, cadefault=False, context=None):