Show last 10 prices by default in CLI

fioul.py

@@ -32,6 +32,11 @@ def get_price():
     return product["default_price_tax"]
 
 
+def get_prices(n=10):
+    query = Price.select().order_by(Price.date.desc()).limit(n)
+    return query
+
+
 def store_current_price():
     today = date.today()
     # Get price returns a float (price per L)
@@ -63,14 +68,19 @@ def subcommand(args=[], parent=subparsers):
     return decorator
 
 
+def argument(*name_or_flags, **kwargs):
+    return ([*name_or_flags], kwargs)
+
+
 @subcommand()
 def update(args):
     store_current_price()
 
 
-@subcommand()
+@subcommand([argument("n", default=42, nargs="?", type=int)])
 def show(args):
-    print(get_price())
+    for x in get_prices(args.n):
+        print(x.date, x.price)
 
 
 @subcommand()