title: importing .txt file online keep giving me an error
body: <p>This code keep giving me error that it is an invalid argument.
  I don't know why it doesn't working</p>
  
  <pre><code>path='https://resources.oreilly.com/examples/0636920023784/raw/master/pydata-book-master/ch02/usagov_bitly_data2012-03-16-1331923249.txt'
  f=open(path)
  f.readline()
  </code></pre>
  
  <p>Traceback (most recent call last)
   in 
        1 path='<a href="https://resources.oreilly.com/examples/0636920023784/raw/master/pydata-book-master/ch02/usagov_bitly_data2012-03-16-1331923249.txt" rel="nofollow noreferrer">https://resources.oreilly.com/examples/0636920023784/raw/master/pydata-book-master/ch02/usagov_bitly_data2012-03-16-1331923249.txt</a>'
  ----> 2 f=open(path)
        3 f.readline()</p>
  
  <p>OSError: [Errno 22] Invalid argument: '<a href="https://resources.oreilly.com/examples/0636920023784/raw/master/pydata-book-master/ch02/usagov_bitly_data2012-03-16-1331923249.txt" rel="nofollow noreferrer">https://resources.oreilly.com/examples/0636920023784/raw/master/pydata-book-master/ch02/usagov_bitly_data2012-03-16-1331923249.txt</a>'</p>