BeautifulSoup doesn't return all data
I am trying to parse some data for the moon phase today using the Python BeautifulSoup library.
from bs4 import BeautifulSoup
import urllib2
moon_url = "http://www.moongiant.com/phase/today/"
try:
rqest = urllib2.urlopen(moon_url)
moon_Soup = BeautifulSoup(rqest, 'lxml')
moon_angle = 0
moon_illumination = 0
main_data = moon_Soup.find('div', {'id' : 'moonDetails'})
print main_data
except urllib2.URLError:
print "Error"
But instead it outputs:
<div id="moonDetails">
Phase: <span>Waxing Crescent</span><br>Illumination: <span>36%
</span><br>Moon Age: <span>6.00 days</span><br>Moon Angle: <span>0.55</span><br>Moon Distance: <span>364,</span>434.78 km<br>Sun Angle: <span>0.53</span><br>Sun Distance: <span>149,</span>571,918.47 km<br>
</div>
This is just:
<div id="moonDetails">
</div>
Any idea?
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Actually after RaminNietzsche's comment, I used the dryscrape library .
from bs4 import BeautifulSoup
import urllib2
import dryscrape
moon_url = "http://www.moongiant.com/phase/today/"
try:
rqest = urllib2.urlopen(moon_url)
session = dryscrape.Session()
session.visit(moon_url)
response = session.body()
soup = BeautifulSoup(response, 'lxml')
moon_data = soup.findAll('div', {'id':'moonDetails'})
print moon_data
The resulting output is now:
<div id="moonDetails">
Phase: <span>Waxing Crescent</span><br>Illumination: <span>36%
</span><br>Moon Age: <span>6.00 days</span><br>Moon Angle: <span>0.55</span><br>Moon Distance: <span>364,</span>434.78 km<br>Sun Angle: <span>0.53</span><br>Sun Distance: <span>149,</span>571,918.47 km<br>
</div>
Thanks everyone for the answers!
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As RaminNietzsche pointed out in the comments, you should extract the text of your script in this tag script
. You can use regex
or built-in methods
(for example split()
, strip()
and replace()
).
Code:
from bs4 import BeautifulSoup
import requests
import re
import json
moon_url = "http://www.moongiant.com/phase/today/"
html_source = requests.get(moon_url).text
moon_soup = BeautifulSoup(html_source, 'html.parser')
data = moon_soup.find_all('script', {'type' : 'text/javascript'})
for d in data:
d = d.text
if 'var jArray=' in d:
jArray = re.search('\{(.*?)\}', d).group()
moon_data = json.loads(jArray)
print(moon_data)
#if you want mArray data too, you just have to:
# 1. add `'var mArray=' in d` in the if clause, and
# 2. uncomment the following lines
#mArray = re.search('\[+(.*?)\];', d).group()
#print(mArray)
Output:
{'3': ['<b>April 4</b>', '58%\n', 'Sun Angle: 0.53291621763825', 'Sun Distance: 149657950.85286', 'Moon Distance: 369697.55153449', 'Moon Age: 8.1316595947356', 'Moon Angle: 0.53870564539409', 'Waxing Gibbous', 'April 4'], '2': ["<span style='color:#c7b699'><b>April 3</b></span>", 'Illumination: <span>47%\n</span>', 'Sun Angle: <span>0.53', 'Sun Distance: <span>149,</span>614,</span>943.28', 'Moon Distance: <span>366,</span>585.35', 'Moon Age: <span>7.08', 'Moon Angle: <span>0.54', 'First Quarter', '<b>Monday, April 3, 2017</b>', 'April', 'Phase: <span>First Quarter</span>', 'April 3'], '1': ['<b>April 2</b>', '36%\n', 'Sun Angle: 0.53322274612254', 'Sun Distance: 149571918.46739', 'Moon Distance: 364434.77975454', 'Moon Age: 6.002888839693', 'Moon Angle: 0.54648504798072', 'Waxing Crescent', 'April 2'], '4': ['<b>April 5</b>', '69%\n', 'Sun Angle: 0.53276322269153', 'Sun Distance: 149700928.5008', 'Moon Distance: 373577.14506795', 'Moon Age: 9.1657967733025', 'Moon Angle: 0.53311119464703', 'Waxing Gibbous', 'April 5'], '0': ['<b>April 1</b>', '25%\n', 'Sun Angle: 0.53337618944887', 'Sun Distance: 149528889.15122', 'Moon Distance: 363387.67496992', 'Moon Age: 4.9078487808877', 'Moon Angle: 0.54805974945761', 'Waxing Crescent', 'April 1']}
Since it loads as JSON
, you can navigate through it like this:
Sample code:
print(moon_data['4'])
print('-')*5
print(moon_data['4'][2])
Output:
['<b>April 5</b>', '69%\n', 'Sun Angle: 0.53276322269153', 'Sun Distance: 149700928.5008', 'Moon Distance: 373577.14506795', 'Moon Age: 9.1657967733025', 'Moon Angle: 0.53311119464703', 'Waxing Gibbous', 'April 5']
-----
Sun Angle: 0.53276322269153
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Another way I got from root answer on Chrome DOM access .
The idea is that you can use selenium and lxml together to access the DOM of the page that has been loaded and processed by its javascript.
>>> moon_url = "http://www.moongiant.com/phase/today/"
>>> import selenium.webdriver as webdriver
>>> import lxml.html as html
>>> import lxml.html.clean as clean
>>>
>>> browser = webdriver.Chrome()
>>> browser.get(moon_url)
>>> content = browser.page_source
>>> cleaner = clean.Cleaner()
>>> content = cleaner.clean_html(content)
>>> doc = html.fromstring(content)
>>> type(doc)
<class 'lxml.html.HtmlElement'>
>>> type(content)
<class 'str'>
>>> open('c:/scratch/content.htm','w').write(content)
27070
Once you have done this, as shown in the last example above, you can access the DOM either / as HTML or as a tree suitable for processing with lxml. In your case, you might prefer to cook your soup using HTML; that would mean applying BeautifulSoup to content
.
By the way, when I saved content
, I actually found the following construct in the HTML, as I would expect.
<div id="moonDetails">
Phase: <span>First Quarter</span><br>
Illumination: <span>47%</span><br>
Moon Age: <span>7.08 days</span><br>
Moon Angle: <span>0.54</span><br>
Moon Distance: <span>366,</span>585.35 km<br>
Sun Angle: <span>0.53</span><br>
Sun Distance: <span>149,</span>614,943.28 km<br>
</div>
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