Цикл по ссылкам

import urllib.request
from bs4 import BeautifulSoup
 
html = urllib.request.urlopen('http://www.tennisexplorer.com/next/?type=atp-single&year=2015&month=03&day=17').read()
soup = BeautifulSoup(html)
table = soup.find('table', class_ = 'result')
for row in table:
    tr = table.find_all('tr', id = True)[0::2]
    for row in tr:
        td = row.find_all('td')[12]
        for link in td.find_all('a'):
            a = 'http://www.tennisexplorer.com' + link.get('href')

html_2 = urllib.request.urlopen(a).read()
soup_2 = BeautifulSoup(html_2)
div = soup_2.find('div', class_ = {'half-l' : True})
table_2 = div.find_all('table', class_ = 'result mutual')
for row in table_2:
                    match = row.find_all('tr')[1::2]
                    for row in match:
                        cols = row.find_all('td')[1:]
                        cols = (cols[0].text + ' ' + cols[1].text)
                        print(cols)
print('')
div_1 = soup_2.find('div', class_ = {'half-r' : True})
table_3 = div_1.find_all('table', class_ = 'result mutual')
for row in table_3:
                    match_1 = row.find_all('tr')[1::2]
                    for row in match_1:
                        cols_1 = row.find_all('td')[1:]
                        cols_1 = (cols_1[0].text + ' ' + cols_1[1].text)
                        print(cols_1)
print('***')

import urllib.request
from bs4 import BeautifulSoup
 
html = urllib.request.urlopen('http://www.tennisexplorer.com/next/?type=atp-single&year=2015&month=03&day=17').read()
soup = BeautifulSoup(html)
table = soup.find('table', class_ = 'result')
for row in table:
    tr = table.find_all('tr', id = True)[0::2]
    for row in tr:
        td = row.find_all('td')[12]
        for link in td.find_all('a'):
            a = 'http://www.tennisexplorer.com' + link.get('href')
 
# собственно в этом месте загвоздка, что вписать???
 
 
            html_2 = urllib.request.urlopen(a).read()
            soup_2 = BeautifulSoup(html_2)
            div = soup_2.find('div', class_ = {'half-l' : True})
            table_2 = div.find_all('table', class_ = 'result mutual')
            for row in table_2:
                    match = row.find_all('tr')[1::2]
                    for row in match:
                        cols = row.find_all('td')[1:]
                        cols = (cols[0].text + ' ' + cols[1].text)
                        print(cols)
            print('')
            div_1 = soup_2.find('div', class_ = {'half-r' : True})
            table_3 = div_1.find_all('table', class_ = 'result mutual')
            for row in table_3:
                    match_1 = row.find_all('tr')[1::2]
                    for row in match_1:
                        cols_1 = row.find_all('td')[1:]
                        cols_1 = (cols_1[0].text + ' ' + cols_1[1].text)
                        print(cols_1)
           print('***')

import requests
import lxml.html
 
base_url = 'http://www.tennisexplorer.com'
 
 
def get_pages_players():
    selector = 'div.lGray table.result tr td a'
 
    page = requests.get(base_url + '/next/?type=atp-single&year=2015&'
                                   'month=03&day=17').text
    page = lxml.html.fromstring(page)
    return [i.get('href') for i in page.cssselect(selector) if i.get('title')]
 
 
def get_matches(page_url):
    result = ''
    page = requests.get(base_url + page_url).text
    page = lxml.html.fromstring(page)
 
    for i in page.cssselect('div#center table.result.mutual tr'):
        if 'head' not in i.get('class'):
            match = i.text_content().strip().replace('\n\t\t\t', ' ')
            result += '{0}\n'.format(match)
    return result
 
if __name__ == '__main__':
    for i in get_pages_players():
        print(get_matches(i))