title: How do I parse a date as an argument with argparse?
body: <p>Im trying to write a python program that I will run at the command line. I'd like the program to take a single input variable. Specifically, I would use a date in the form of 2014-01-28 (yyyy-mm-dd):</p>
  
  <p>e.g. <code>python my_script.py 2014-01-28</code></p>
  
  <p>It seems argparse might be able to help me but I have found very little documentation regarding the module. Does anyone have experience with something like this?</p>