Added comments to Deck.py

Project 1/Deck.py

@@ -1,6 +1,11 @@
 import random
 from Card import Card
 
+"""
+Defines the deck of cards used in the Solitaire game. Contains methods to shuffle the deck, deal cards, and check the number of remaining cards.
+
+Important Note: The prints in this file only run when this file is ececuted directly. This file should not be executed directly normally.
+"""
 class Deck:
     def __init__(self):
         self._cards= []
@@ -11,27 +16,27 @@ class Deck:
 
         for suit in suits:
             for value in values:
-                self._cards.append(Card(suit, value))
+                self._cards.append(Card(suit, value)) #creates a standard 52-card deck
     
     def shuffle(self):
-        for i in range(len(self._cards)):
-            j = random.randrange(i, len(self._cards))
-            self._cards[i], self._cards[j] = self._cards[j], self._cards[i]
-        self._next_card = 0    
+        for i in range(len(self._cards)): #iterates through each card in the deck
+            j = random.randrange(i, len(self._cards)) #selects a random index from i to the end of the deck
+            self._cards[i], self._cards[j] = self._cards[j], self._cards[i] #Shuffles the deck
+        self._next_card = 0    #Resets the next card index after shuffling.
     
     def deal(self):
         if self._next_card >= len(self._cards): 
-            return None
+            return None #Returns None if there are no cards left to deal.
         card = self._cards[self._next_card]
-        self._next_card += 1
+        self._next_card += 1 #Advances the next card index.
         return card
     
     def number_of_cards(self) -> int:
-        return len(self._cards) - self._next_card
+        return len(self._cards) - self._next_card #Returns the number of remaining cards in the deck.
     
 if __name__ == "__main__":
     deck = Deck()
-    deck.shuffle()
+    deck.shuffle() #Calls the shuffle method to randomize the deck.
     for _ in range(5):
         print(deck.deal())
-    print("Cards left:", deck.number_of_cards())
+    print("Cards left:", deck.number_of_cards()) #Prints the number of cards left in the deck after dealing five cards.