Web Crawler help

[takaa]

thanks to your help i have been able to extract the data and export export everything to a csv file. Offcourse this now tasts like more and i would like to access the url's of the individual listings to extract more detailed info for each of the listings. 

In the main source code this means i need to scrap this url for each of the listings (see blue)

</div>
            </a>
    </div>
        <div class="search-result-content">
            <div class="search-result-content-inner">
<div class="search-result-header">
        <a href="/koop/rotterdam/huis-85488249-scottstraat-3/" data-search-result-item-anchor="85488249">
            <h3 class="search-result-title">
                Scottstraat 3
                <small class="search-result-subtitle">
                    3076 GX Rotterdam
                </small>
            </h3>
        </a>
</div>    <div class="search-result-info search-result-info-price">
            <span class="search-result-price">€ 165.000 k.k.</span>
                    </div>
<div class="search-result-info">
    <ul class="search-result-kenmerken ">
            <li>
                    <span title="Woonoppervlakte">67 m²</span>
                                     / 
                                    <span title="Perceeloppervlakte">138 m²</span>
            </li>
                                    <li>3 kamers</li>
       </ul>
</div>

I am using the code as posted by metulburr and added this line below "room"

href = ad.find('a', {'class': 'search-result-header'}).link.get('href', {})

but then i get the following error message:

Error:
    href = ad.find('a', {'class': 'search-result-header'}).link.get('href', {})

AttributeError: 'NoneType' object has no attribute 'get'

i have tried several things, for example

href = 'www.funda.nl' + ad.find('a')

but non-successful so far. 

As always, help is much appreciated!