The main goal of the diploma thesis is to develop a prototype online solution for comparing prices between different online providers, which is simply expandable to a larger number of online stores. The starting point is a functionality review of existing similar solutions. We design the solution as a web application which enables fast and direct presentation of the searched products. The data is obtained by the data scraping technique. The final solution is based on the searching. It finds all items that can be found in the multitude of online stores to which the solution has access. The solution includes some add-ons for better search efficiency. The web application is developed in Python and \request and BeautifulSoup libraries are used to scrape data from the web. The analysis proved our prototype solution is useful in practice, too.
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