Python的网页抓取：类型错误： '诠释' 对象未标化的

Question

url = "https://technet.microsoft.com/en-us/library/hh135098(v=exchg.150).aspx" 
r = requests.get(url) 
soup = BeautifulSoup(r.content, 'lxml') 
table = soup.find_all('table', attrs={"responsive": "true"})[0] 
for rows in table.find_all('tr')[1]: 
    item = [] 
    for val in rows.find('td'): 
     item.append(val.text.strip()) 
     print (item) 

Traceback (most recent call last): 
    File "<stdin>", line 3, in <module> 
TypeError: 'int' object is not interable 

4号线是指for val in rows.find('td'):

Answer 1

在for val in rows.find('td'):当没有td在rows发现，就返回-1的int object你试图循环，因此错误。

正确的做法：

>>> for rows in table.find_all('tr'): 
... item = [] 
... for val in rows.find_all('td'): 
...  item.append(val.text.strip()) 
... print(item) 
... 
[] 
['Exchange Server 2016 CU5', 'March 21, 2017', '15.01.0845.034'] 
['Exchange Server 2016 CU4', 'December 13, 2016', '15.01.0669.032'] 
['Exchange Server 2016 CU3', 'September 20, 2016', '15.01.0544.027'] 
['Exchange Server 2016 CU2', 'June 21, 2016', '15.01.0466.034'] 
['Exchange Server 2016CU1', 'March 15, 2016', '15.01.0396.030'] 
['Exchange Server 2016 RTM', 'October 1, 2015', '15.01.0225.042'] 
['Exchange Server 2016 Preview', 'July 22, 2015', '15.01.0225.016']