title: Python convert date to datetime
body: <p>I have following string of date <code>"2018-05-08"</code> and I would like to convert it into the datetime format of python like: <code>"2018-05-08T00:00:00.0000000"</code>. I understand I can combine the string like:</p>
  
  <pre><code>&gt; date = "2018-05-08"
  &gt; time = "T00:00:00.0000000"
  &gt; date+time
  '2018-05-08T00:00:00.0000000'
  </code></pre>
  
  <p>But is there pythonic way of doing it where I can use libraries like datetime?</p>