title: Python: convert datedelta to int value of time difference
body: <p>I want to change time delta to integer value .</p>
  
  <p>My code is as below.</p>
  
  <pre><code>import datetime
  now = datetime.date.today()
  print(now.toordinal()) # 736570
  cali_date = datetime.data(2017, 6, 14)
  print(cali_date.toordinal()) # 736494
  date1 = now - cali_date
  print(date1) # 76 days, 0:00:00
  </code></pre>
  
  <p>But, I want to get just <code>76</code> with integer.
  How can I solve this problem?
  Thank you.</p>