Write a program that repeatedly reads integers from the user until the user enters the word 'stop' (this is called a sentinel value). When the user enters the sentinel value, output the following statistics about the sequence of integers: sum, average, sum of even numbers, and the largest number.

For example:

Enter a sequence of integers. Enter 'stop' to exit.

> 1

> 3

> 1

> 3

> 4

> 9

> 3

> stop

Sum: 24

Average: 3.4285714285714284

Even Sum: 4

Largest number: 9

Hint: don't try to store every value, instead keep track of the relevant statistics with each new number (e.g. add up each number as they're entered to determine the sum).

use Python