Если вы посмотрите на фактический URL, который вы печатаете, вы заметите, что он печатает дубликаты. Технически, вы получаете только 25.
print(count)
https://www.rightmove.co.uk/property-for-sale/property-61358637.html
https://www.rightmove.co.uk/property-for-sale/property-61358637.html
https://www.rightmove.co.uk/property-for-sale/property-57044346.html
https://www.rightmove.co.uk/property-for-sale/property-57044346.html
https://www.rightmove.co.uk/commercial-property-for-sale/property-70211329.html
https://www.rightmove.co.uk/commercial-property-for-sale/property-70211329.html
https://www.rightmove.co.uk/property-for-sale/property-68319664.html
https://www.rightmove.co.uk/property-for-sale/property-68319664.html
....
Просто посмотрите на первые 2 элемента в ваших элементах propertyCard-link. Один - это «сводка», а другой - «подробности»:
Web_Section_Of_Interest[0]
Out[6]:
<a class="propertyCard-link" data-bind="click: propertyCardClick('details'), attr: { href: computedDetailsLink() }" data-test="property-details" href="/property-for-sale/property-61358637.html">
<h2 class="propertyCard-title" data-bind="text: propertyTypeFullDescription" itemprop="name">
2 bedroom semi-detached house for sale </h2>
<address class="propertyCard-address" itemprop="address" itemscope="" itemtype="http://schema.org/PostalAddress">
<meta content="Auckland Road, Potters Bar" data-bind="attr: { content: displayAddress }" itemprop="streetAddress"/>
<meta content="GB" data-bind="attr: { content: countryCode }" itemprop="addressCountry"/>
<span data-bind="text: displayAddress">Auckland Road, Potters Bar</span>
</address>
</a>
Web_Section_Of_Interest[1]
Out[7]:
<a class="propertyCard-link" data-bind="click: propertyCardClick('summary'), attr: { href: computedDetailsLink() }" href="/property-for-sale/property-61358637.html">
<span data-bind="html: summary" data-test="property-description" itemprop="description">BPM Auckland are pleased to offer this spacious Extended 2 Double bedroom 1930's built semi detached house, situated in this popular location within easy reach of good schools including Dame Alice Owens. The property benefits from a large 190' rear garden and also potential for a loft conversion...</span>
</a>