title: unconverted data remains: 15
body: <p>I am trying to generate a random date and the add some days to that date, but I am facing this error. I guess it has to do with the format of my date but I can't find the solution.</p>
  
  <p>I thought it was because I needed double digit numbers for the day and month, here is my code which produces an error.</p>
  
  <pre><code>start_day = randint(1,31)
  strt_day = []
  strt_day.append("%02d" % start_day)
  start_day = strt_day 
  
  strt_moth = []
  start_month = randint(2,4)
  strt_moth.append("%02d" % start_month)
  start_month = strt_moth
  
  start_date = ""+start_month[0]+"/"+start_day[0]+"/2015"
  depart = datetime.datetime.strptime(start_date, "%m/%d/%y")
  </code></pre>
  
  <p>Any idea on what I am doing wrong? </p>
  
  <p>Thanks</p>