美丽的汤清洁和错误

时间:2016-07-22 02:06:28

标签: python beautifulsoup

我有这段代码:

from bs4 import BeautifulSoup
import urllib2
from lxml import html
from lxml.etree import tostring 
trees = urllib2.urlopen('http://aviationweather.gov/adds/metars/index?                             station_ids=KJFK&std_trans=translated&chk_metars=on&hoursStr=most+recent+only&ch    k_tafs=on&submit=Submit').read()
soup = BeautifulSoup(open(trees))
print soup.get_text()
item=soup.findAll(id="info")
print item

然而,当我在我的窗口上输入汤时,它会给我一个错误,当我的程序运行时,它会给我一个非常长的HTML代码

等等。任何帮助都会很棒。

1 个答案:

答案 0 :(得分:0)

第一个问题出在这一部分:

trees = urllib2.urlopen('http://aviationweather.gov/adds/metars/index?station_ids=KJFK&std_trans=translated&chk_metars=on&hoursStr=most+recent+only&chk_tafs=on&submit=Submit').read()
soup = BeautifulSoup(open(trees))

trees是一个类文件对象,无需在其上调用open(),修复它:

soup = BeautifulSoup(trees, "html.parser")

我们还明确将html.parser设置为基础解析器。

然后,您需要特定关于您要从页面中提取的内容。以下是获取METAR text值的示例代码:

from bs4 import BeautifulSoup
import urllib2


trees = urllib2.urlopen('http://aviationweather.gov/adds/metars/index?station_ids=KJFK&std_trans=translated&chk_metars=on&hoursStr=most+recent+only&chk_tafs=on&submit=Submit').read()
soup = BeautifulSoup(trees, "html.parser")

item = soup.find("strong", text="METAR text:").find_next("strong").get_text(strip=True).replace("\n", "")
print item

打印KJFK 220151Z 20016KT 10SM BKN250 24/21 A3007 RMK AO2 SLP183 T02440206