Update argparse config

diff --git a/lightcards/lightcards.py b/lightcards/lightcards.py
index 62019a52b6078f07d3999e27cfda033f906c70e0..33da9ee19b9dede6731e6f01102fc9ed547ce67f 100755 (executable)
--- a/lightcards/lightcards.py
+++ b/lightcards/lightcards.py
@@ -15,10 +15,10 @@ def parse_args():
     parser.add_argument("inp",
                         metavar="input file",
                         type=str,
-                        nargs="*")
+                        nargs=1)
     parser.add_argument("-v", "--version",
-                        action='store_true',
-                        help="print version")
+                        action='version',
+                        version="lightcards 0.0.0")
     return parser.parse_args()
 
 
@@ -29,10 +29,6 @@ def show(stack, headers):
 
 def main(args=sys.argv):
     args = parse_args()
-    if args.version:
-        print("0.0.0")
-        exit(0)
-
     headers = parse.parse_html(parse.md2html(args.inp[0]))[0]
     stack = parse.parse_html(parse.md2html(args.inp[0]))[1]
     show(stack, headers)