Specify date format for Python argparse input arguments

I have a Python script that requires some command line inputs and I am using argparse for parsing them. I found the documentation a bit confusing and couldn"t find a way to check for a format in the input parameters. What I mean by checking format is explained with this example script:

parser.add_argument("-s", "--startdate", help="The Start Date - format YYYY-MM-DD ", required=True)
parser.add_argument("-e", "--enddate", help="The End Date format YYYY-MM-DD (Inclusive)", required=True)
parser.add_argument("-a", "--accountid", type=int, help="Account ID for the account for which data is required (Default: 570)")
parser.add_argument("-o", "--outputpath", help="Directory where output needs to be stored (Default: " + os.path.dirname(os.path.abspath(__file__)))

I need to check for option -s and -e that the input by the user is in the format YYYY-MM-DD. Is there an option in argparse that I do not know of which accomplishes this?