The last trinket in Lecture Notes demonstrated web scraping Google search results. However, it only returns the search results from the first page. Use your knowledge on HTTP and the web scraping to determine how to obtain the rest of the search results, which are in second and third pages etc. You can load the search results in browser and observe the links to 2nd or 3rd pages to the result to identify this. a. page=20 b. begin=2 c. start=20 d. Use get parameter page=2 etc. e. start=2
Question
The last trinket in Lecture Notes demonstrated web scraping Google search results. However, it only returns the search results from the first page.
Use your knowledge on HTTP and the web scraping to determine how to obtain the rest of the search results, which are in second and third pages etc. You can load the search results in browser and observe the links to 2nd or 3rd pages to the result to identify this.
a. page=20
b. begin=2
c. start=20
d. Use get parameter page=2 etc.
e. start=2
Solution
To obtain the rest of the search results from Google, which are on the second, third pages, etc., you would need to modify the URL parameters of your HTTP request.
When you perform a Google search, the URL contains various parameters that determine the search results displayed. One of these parameters is 'start'. This parameter determines the starting result number. For example, if 'start=10', the search results will begin from the 11th result.
So, to scrape results from different pages, you would need to change the 'start' parameter in your HTTP request URL. For the second page, you would use 'start=10', for the third page 'start=20', and so on.
This is because Google displays 10 results per page by default. So, the 'start' parameter is essentially (page number - 1) * 10.
Please note that web scraping Google search results is against Google's terms of service. This is a hypothetical explanation and should not be used to scrape Google search results.
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