add a few simple boilerplates

Argparse_app/main.py

@@ -0,0 +1,26 @@
+#!/usr/bin/env python
+
+import argparse
+
+
+def main():
+
+    description = 'Describe what your app does here'
+
+    # Run CLI menu.
+    parser = argparse.ArgumentParser(description=description)
+
+    group = parser.add_mutually_exclusive_group(required=True)
+
+    group.add_argument('-e', '--encode', type=int, help="some help here")
+
+    group.add_argument('-d', '--decode', help="another help here")
+
+    args = parser.parse_args()
+
+    print(args.encode)
+    print(args.decode)
+
+
+if __name__ == "__main__":
+    main()