Mengapa Python membenarkan koma di hujung senarai dan tupel?

# Creating a List
myList = ["Jacob", "Harry", "Mark", "Anthony", ]

# Displaying the List
print("List = ",myList)

('List = ', ['Jacob', 'Harry', 'Mark', 'Anthony'])

# Creating a Tuple
myTuple = ("Tesla", "Audi", "Toyota",)

# Displaying the Tuple
print("Tuple = ",myTuple)

('Tuple = ', ('Tesla', 'Audi', 'Toyota'))

# Creating a Dictionary with 4 key-value pairs
myprod = {
   "Product":"Mobile",
   "Model": "XUT",
   "Units": 120,
   "Available": "Yes",
}

# Displaying the Dictionary
print(myprod)

# Displaying individual values
print("Product = ",myprod["Product"])
print("Model = ",myprod["Model"])
print("Units = ",myprod["Units"])
print("Available = ",myprod["Available"])

{'Units': 120, 'Available': 'Yes', 'Product': 'Mobile', 'Model': 'XUT'}
('Product = ', 'Mobile')
('Model = ', 'XUT')
('Units = ', 120)
('Available = ', 'Yes')