Error Handling and User Experience Improvement

Rock Paper Scissor/rps.py

@@ -1,91 +1,62 @@
-import random 
-  
-# Print multiline instruction 
-# performstring concatenation of string 
+import random
+
+# Print multiline instruction
+# perform string concatenation of string
 print("Winning Rules of the Rock Paper Scissor game as follows: \n"
-                                +"Rock vs Paper->Paper wins \n"
-                                + "Rock vs Scissor->Rock wins \n"
-                                +"Paper vs Scissor->Scissor wins \n"
-                                +"Similar selcetions result in a draw. \n") 
-
-while True: 
-    print("Enter choice by entering the appropiate number \n 1. Rock \n 2. Paper \n 3. Scissor \n") 
-
-    # take the input from user 
-    choice = int(input("It is your turn, please choose: ")) 
-
-    # OR is the short-circuit operator 
-    # if any one of the condition is true 
-    # then it return True value 
-
-    # looping until user enter invalid input 
-    while choice > 3 or choice < 1: 
-        choice = int(input("Please enter a number between 1 and 3: ")) 
-
-
-    # initialize value of choice_name variable 
-    # corresponding to the choice value 
-    if choice == 1: 
+      + "Rock vs Paper -> Paper wins \n"
+      + "Rock vs Scissor -> Rock wins \n"
+      + "Paper vs Scissor -> Scissor wins \n"
+      + "Similar selections result in a draw. \n")
+
+while True:
+    print("Enter choice by entering the appropriate number \n 1. Rock \n 2. Paper \n 3. Scissor \n")
+
+    # Take the input from user
+    try:
+        choice = int(input("It is your turn, please choose: "))  # Updated here to handle input within try-except block
+        while choice > 3 or choice < 1:
+            choice = int(input("Please enter a number between 1 and 3: "))  # Moved input validation inside try block
+    except ValueError:
+        print("Invalid input. Please enter a number between 1 and 3.")  # Added error message for invalid input
+        continue
+
+    # Initialize value of choice_name variable corresponding to the choice value
+    if choice == 1:
         choice_name = 'Rock'
-    elif choice == 2: 
+    elif choice == 2:
         choice_name = 'Paper'
-    else: 
+    else:
         choice_name = 'Scissor'
-
-    # print user choice  
-    print("You chosed: " + choice_name) 
-    print("\nNow its my turn.......") 
-
-    # Computer chooses randomly any number  
-    # among 1 , 2 and 3. Using randint method 
-    # of random module 
-    comp_choice = random.randint(1, 3) 
-    #check for draw
-    if comp_choice == choice: 
-        print("We both choose "+choice_name)
-        print(" - It´s a draw")
-    else:  
-        # initialize value of comp_choice_name  
-        # variable corresponding to the choice value 
-        if comp_choice == 1: 
-            comp_choice_name = 'Rock'
-        elif comp_choice == 2: 
-            comp_choice_name = 'Paper'
-        else: 
-            comp_choice_name = 'Scissor'
-
-        print("I did choose: " + comp_choice_name) 
-
-        print(choice_name + " V/s " + comp_choice_name) 
-
-        # condition for winning 
-        if((choice == 1 and comp_choice == 2) or
-          (choice == 2 and comp_choice ==1 )): 
-            print("Paper wins => ", end = "") 
-            result = "Paper"
-
-        elif((choice == 1 and comp_choice == 3) or
-            (choice == 3 and comp_choice == 1)): 
-            print("Rock wins =>", end = "") 
-            result = "Rock"
-        else: 
-            print("Scissor wins =>", end = "") 
-            result = "Scissor"
-
-        # Printing either user or computer wins 
-        if result == choice_name: 
-            print("<== User wins ==>") 
-        else: 
-            print("<== Computer wins ==>") 
-
-    print("Do you want to play again? (Y/N)") 
-    ans = input() 
-
-
-    # if user input n or N then condition is True 
-    if ans == 'n' or ans == 'N': 
+
+    # Print user choice
+    print("You chose: " + choice_name)
+    print("\nNow it's my turn.......")
+
+    # Computer chooses randomly any number among 1, 2, and 3 using randint method of random module
+    comp_choice = random.randint(1, 3)
+    comp_choice_name = {1: 'Rock', 2: 'Paper', 3: 'Scissor'}[comp_choice]
+
+    print(f"I chose: {comp_choice_name}")
+    print(f"{choice_name} vs {comp_choice_name}")
+
+    # Determine the result
+    if choice == comp_choice:
+        print(f"We both chose {choice_name}. It's a draw!")
+    else:
+        if (choice == 1 and comp_choice == 3) or (choice == 2 and comp_choice == 1) or (choice == 3 and comp_choice == 2):
+            print(f"{choice_name} wins! <== User wins ==>")
+        else:
+            print(f"{comp_choice_name} wins! <== Computer wins ==>")
+
+    # Ask to play again
+    print("Do you want to play again? (Y/N)")
+    ans = input().lower()
+    if ans == 'n':
         break
-
-# after coming out of the while loop 
-# we print thanks for playing 
-print("\nThanks for playing") 
+    elif ans != 'y':
+        print("Invalid input. Exiting the game.")
+        break
+
+# After coming out of the while loop
+# we print thanks for playing
+print("\nThanks for playing")