Example of New features in Python 3.8. Walrus operator and positional only parameters. #python3.8

python_3.8_features.py

### Walrush operator
data = ["some", "dummy", "values", "in", "this", "list"]

# Show the length of data if data has more than 5 values
if (data_length:=len(data)) > 5:
    print(data_length)
    # 6


### Positional only parameters
def get_amount(price, tax_percentage, total_price=False, /):
    tax_amount = price * (tax_percentage / 100.0)
    if total_price:
        return price + tax_amount
    return tax_amount

item_price = 1699
tax_percentage = 14.87
tax_amount = get_amount(item_price, tax_percentage)
price_with_tax = get_amount(item_price, tax_percentage, True)
print(f"Tax amount: {tax_amount}")
print(f"Item price with tax: {price_with_tax}")
# Tax amount: 252.6413
# Item price with tax: 1951.6413