ex05-01.py

# https://www.py4e.com/html3/05-iterations
#
# Exercise 1: Write a program which repeatedly reads numbers until the user enters "done".
# Once "done" is entered, print out the total, count, and average of the numbers.
# If the user enters anything other than a number, detect their mistake using try and
# except and print an error message and skip to the next number.
#
# Enter a number: 4
# Enter a number: 5
# Enter a number: bad data
# Invalid input
# Enter a number: 7
# Enter a number: done
# 16 3 5.333333333333333
#
# ========================================================================================

total = 0
count = 0

while True:
    val_input = input("Enter a number: ")
    if val_input == "done":
        break
    try:
        value = float(val_input)
    except:
        print('Invalid input')
        continue
    total = total + value
    count = count + 1

print(total, count, total/count)