title: Constructing a url with query strings
body: <p>How do I properly construct urls with query strings?</p>
  
  <p>For example, from a website, I scrape the value <code>www.abc.com/SomethingHere?x=1&amp;y=2</code> however, the value I get uplon scraping is <code>www.abc.com/SomethingHere?x=1&amp;amp;y=2</code> sometimes there's wierd <code>%xx</code> at the end I don't understand. Requests made with these modified strings fail (but are ok if I manually remove the amp and percentage wierdness). It also makes me afraid of adding more query parameters with just <code>www.abc.com/SomethingHere?x=1&amp;amp;y=2&amp;z=3</code></p>
  
  <p>How do I make sure I get the proper urls?</p>