11 | Keyword arguments

What it is is:

keyword_args.py

# This program demonstrates keyword arguments.

def main():
    # Show the amount of simple interest using 0.01 as
    # interest rate per period, 10 as the number of periods,
    # and $10,000 as the principal.
    show_interest(rate=0.01, periods=10, principal=10000.0)

# The show_interest function displays the amount of
# simple interest for a given principal, interest rate
# per period, and number of periods.

def show_interest(principal, rate, periods):
    interest = principal * rate * periods
    print(f'The simple interest will be ${interest:,.2f}.') 

# Call the main function.
main()