refactor method signature

Author: dslsyeoh

rock-paper-scissors.py

@@ -14,12 +14,12 @@ def bot_choice():
  return random.choice(["r", "p", "s"])
 
 
-def format_choice(c):
- if c is "r":
+def format_choice(choice):
+ if choice is "r":
  return "Rock"
- elif c is "p":
+ elif choice is "p":
  return "Paper"
- elif c is "s":
+ elif choice is "s":
  return "Scissors"