我对 BeautifulSoup4 相当陌生,在从以下代码的 html 响应中提取纬度和经度值时遇到困难。
url = 'http://cinematreasures.org/theaters/united-states?page=1'
r = requests.get(url)
soup = BeautifulSoup(r.content)
links = soup.findAll("tr")
print links
此代码多次打印此响应。
<tr class="even location theater" data="{id: 0, point: {lng: -94.1751038, lat: 36.0848965}
完整的tr响应
<tr>\n
<th id="theater_name"><a href="/theaters/united-states?sort=name&order=desc">\u2191 Name</a>
</th>\n
<th id="theater_location"><a href="/theaters/united-states?sort=location&order=asc">Location</a>
</th>\n
<th id="theater_status"><a href="/theaters/united-states?sort=open&order=desc">Status</a>
</th>\n
<th id="theater_screens"><a href="/theaters/united-states?sort=screens&order=asc">Screens</a>
</th>\n</tr>,
<tr class="even location theater" data="{id: 0, point: {lng: -94.1751038, lat: 36.0848965}, category: 'open'}">\n
<td class="name">\n
<a class="map-link" href="/theaters/8775">
<img alt="112 Drive-In" height="48" src="http://photos.cinematreasures.org/production/photos/22137/1313612883/thumb.JPG?1313612883" width="48" />
</a>\n<a class="map-link" href="/theaters/8775">112 Drive-In</a>\n
<div class="info-box">\n
<div class="photo" style="float: left;">
<a href="/theaters/8775">
<img alt="thumb" height="48" src="http://photos.cinematreasures.org/production/photos/22137/1313612883/thumb.JPG?1313612883" width="48" />
</a>
</div>\n
<p style="min-width: 200px !important;">\n<strong><a href="/theaters/8775">112 Drive-In</a></strong>\n
<br>\n 3352 Highway 112 North
<br>Fayetteville, AR 72702
<br>United States
<br>479.442.4542
<br>\n</br>
</br>
</br>
</br>
</br>
</p>\n</div>\n</td>\n
<td class="location">\n Fayetteville, AR, United States\n</td>\n
<td class="status">\n Open\n</td>\n
<td class="screens">\n 1\n</td>\n</tr>
我该如何从这个响应中获取 lng 和 lat 值?
提前谢谢您。
最佳答案
这是我的方法:
import requests
import demjson
from bs4 import BeautifulSoup
url = 'http://cinematreasures.org/theaters/united-states?page=1'
page = requests.get(url)
soup = BeautifulSoup(page.text)
to_plain_coord = lambda d: (d['point']['lng'], d['point']['lat'])
# Grabbing theater coords if `data` attribute exists
coords = [
to_plain_coord(demjson.decode(t.attrs['data']))
for t in soup.select('.theater')
if 'data' in t.attrs]
print(coords)
我不使用任何字符串操作。相反,我从 data
属性加载 JSON。不幸的是,这里的 JSON 不太有效,因此我使用 demjson
库进行 json 解析。
pip install demjson
关于python - 美汤如何刮经纬度,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/35638804/