Help me write a python code

Question

Write a program that reads three decimal numbers and then calculates the average. Do not round the original values during the calculation.

1. Print the three numbers with one decimal place, in a column
2. a dotted line at the bottom of the column
3. the average of all three numbers below.

Your screen should look like the picture with all the numbers in the output being right-aligned using 15 spaces. You must use .format to print and align all of the output.

Answer 1

x=input("Please input the 1st value :>")

y=input("Please input the 2nd value :>")

z=input("Please input the 3rd value :>")

avg = ( (float(x) + float(y) + float(z))/3.0)

print("\n")

print("-----------------------------")

print("{:15.1f}".format(round(float(x), 1)))

print("{:15.1f}".format(round(float(y), 1)))

print("{:15.1f}".format(round(float(z), 1)))

print("-----------------------------")

print("{:15.2f}".format(round(float(avg), 2)))