Minimum of numbers input until a sentinel

Write a program that inputs numbers from the user, using $-1$ to terminate the input. The program should then display the smallest of all the

numbers $($not counting $-1).$ Here is sample output:

You will need to write a sentinel$-$controlled loop, similar to the "Example: Getting input until a sentinel is seen" in zyBook section $10\mathrm{.}3.$

To help you figure out how to find the smallest number, look at zyBook section $10\mathrm{.}3$: Challenge Activity $10\mathrm{.}3\mathrm{.}1.$

Please post your Python code here, in the text of your post. If your code doesn't work, please post your code anyway, and tell us about any

problems or questions you had $($including any error messages$).$