In [24]:

    

import urllib2

height = 338276
url = 'http://blockexplorer.com/b/%s' % height
req = urllib2.Request(url, headers={'User-Agent': 'Mozilla/5.0'})
f = urllib2.urlopen(req)
html = f.read()


    

In [47]:

    

from bs4 import BeautifulSoup
from datetime import datetime

def get_timestamp(s):
    dt = datetime.strptime(s, '%Y-%m-%d %H:%M:%S')
    epoch = datetime(1970,1,1)
    secs_since_epoch = (dt - epoch).total_seconds()
    return secs_since_epoch

def get_block_from_html(html):
    soup = BeautifulSoup(html)
    block = dict()
    block['height'] = str(soup.h1.contents[0].split()[1])
    for li in soup.find_all('li'):
        attr = str(li.contents[0])
        if attr == 'Difficulty':
            value = str(li.contents[2])
            index = value.find(' (')
            value = value[2:index]
            value = value.replace(' ', '')
        else:
            value = str(li.contents[-1])
            if value[0] == ':':
                value = value[2:]
        if attr == 'Time':
            block['timestamp'] = get_timestamp(value)
        if attr == 'Difficulty':
            block['difficulty'] = value
        if attr == 'Transactions':
            block['num_txs'] = value
    return block


    

In [52]:

    

import grequests

def get_url(height):
    url = 'http://blockexplorer.com/b/%s' % height
    return url

def write_block(response, *args, **kwargs):
    print response

heights = [0, 1, 2, 3]
url = 'http://blockexplorer.com/b/%s' % height
headers = {'User-Agent': 'Mozilla/5.0'}
hooks = {'response': write_block}
rs = (grequests.get(get_url(height), headers=headers, hooks=hooks) for height in heights)
grequests.map(rs)


    

    




<Response [301]>
<Response [301]>
<Response [301]>
<Response [301]>
<Response [200]>
<Response [200]>
<Response [200]>
<Response [200]>






    
Out[52]:





[<Response [200]>, <Response [200]>, <Response [200]>, <Response [200]>]