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###### devin blair

4,075 Points# Restarting program rather than exiting when entering an invalid number

I'm trying to make it to where rather than just printing a message and exiting the program it just loops back to the beginning so you don't have to manually restart it but I can't figure it out. I've tried using while loops and using another function but none of it has worked so far.

```
import math
def split_check(total, number_of_people):
if (number_of_people <= 0) or (total <=0):
raise ValueError("Value cannot be 0 or negative")
return math.ceil(total / number_of_people)
try:
total_due = float(input("What is the total? "))
number_of_people = int(input("How many people "))
amount_due = split_check(total_due, number_of_people)
except ValueError:
print("value cannot be 0 or negative")
else:
print("each person owes ${}".format(amount_due))
```

## 1 Answer

###### Mark Sebeck

Treehouse Moderator 30,296 PointsGood question Devin. There are many ways to do loops so think of my solution as one of many. I simply made an infinite loop and then break out of the loop when there is a non zero value entered for number of persons.

```
import math
def split_check(total, number_of_people):
if (number_of_people <= 0) or (total <=0):
raise ValueError("Value cannot be 0 or negative")
return math.ceil(total / number_of_people)
while 1:
try:
total_due = float(input("What is the total? "))
number_of_people = int(input("How many people "))
amount_due = split_check(total_due, number_of_people)
except ValueError:
print("value cannot be 0 or negative")
else:
print("each person owes ${}".format(amount_due))
break
```

I challenge you to find another way to implement a loop here. Keep at it Devin!

## devin blair

4,075 Points## devin blair

4,075 PointsI was so close! I was actually putting the break statement in the wrong place, now I'm trying to change it to where it prompts the user "Value cannot be 0 or negative press r to restart or x to exit" so far I've tried this with nested functions, I'll post it if I figure it out thank you for the help.