assignment 3

Author: mshamoonbutt

main/Assignment 3.py

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+def calculate_cash(file_path, start_cash):
+    # Initialize cash variables
+    current_cash = start_cash
+
+    # Read transactions from the file
+    with open(file_path, 'r') as file:
+        for line in file:
+            invoice, amount, transaction_type = line.split()
+            amount = float(amount)
+
+            # Update cash based on transaction type
+            if transaction_type == 'P':
+                current_cash += amount
+            elif transaction_type == 'R':
+                current_cash -= amount
+
+    return current_cash
+
+if __name__ == "__main__":
+    # Get user input
+    start_cash = float(input("Enter the amount of cash at the beginning of the day: "))
+    end_cash = float(input("Enter the expected amount of cash at the end of the day: "))
+    file_path = input("Enter the name of the file with transactions: ")
+
+    # Calculate actual amount of cash at the end of the day
+    actual_end_cash = calculate_cash(file_path, start_cash)
+
+    # Check if the actual amount matches the expected amount
+    if actual_end_cash == end_cash:
+        print("The actual amount of cash matches the expected amount.")
+    else:
+        print("The actual amount of cash does not match the expected amount.")

main/calculate_caash.py

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+def discount(prices, isPet, nItems):
+    pet_count = sum(isPet)
+    other_items_count = nItems - pet_count
+
+    if pet_count >= 1 and other_items_count >= 5:
+        other_items_total = sum(prices[i] for i in range(nItems) if not isPet[i])
+        discount_amount = 0.2 * other_items_total
+        return discount_amount
+    else:
+        return 0
+
+if __name__ == "__main__":
+    prices = []
+    isPet = []
+    nItems = 0
+
+    while True:
+        price = float(input("Enter price (-1 to stop): "))
+        if price == -1:
+            break
+
+        pet = input("Is it a pet? (Y/N): ").upper() == 'Y'
+
+        prices.append(price)
+        isPet.append(pet)
+        nItems += 1
+
+    discount_amount = discount(prices, isPet, nItems)
+    print(f"Discount Amount: ${discount_amount:.2f}")

main/discount.py

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+def invert_dict(input_dict):
+    """
+    Invert the keys and values of a dictionary. Handles cases where multiple keys have the same value.
+
+    Args:
+    input_dict (dict): The input dictionary.
+
+    Returns:
+    dict: The inverted dictionary.
+    """
+    inverted_dict = {}
+
+    for key, value in input_dict.items():
+        if value in inverted_dict:
+            inverted_dict[value].append(key)
+        else:
+            inverted_dict[value] = [key]
+
+    return inverted_dict
+
+# Example usage:
+original_dict = {'a': 1, 'b': 2, 'c': 1, 'd': 3}
+inverted_result = invert_dict(original_dict)
+
+print("Original Dictionary:", original_dict)
+print("Inverted Dictionary:", inverted_result)