Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Python Python Basics All Together Now Handle Exceptions

Begana Choi
PLUS
Begana Choi
Courses Plus Student 13,126 Points
Posted by Begana Choi
Begana Choi
Courses Plus Student 13,126 Points

question about try block

hello, I have a question about try block. in this video, why do we put only

try:
    amount_of_ticket = int(amount_of_ticket)

this line of code? why not like this?

try:
    amount_of_ticket = input("Hello, {}! How many tickets would you like?  ".format(user_name))
    amount_of_ticket = int(amount_of_ticket)

can somebody let me know more clearly about try block? thank you.

1 Answer

Christian Beckett
Christian Beckett
11,123 Points

when you are using try. your mission is to prevent the user from using a number like -12. so in try you really just want to know the number. when you run try. you'll run the question "Hi {} how many tickets would you like" it would create an annoying algorithm plus its better to have the tickets by them self making it so when you try something else it wouldn't be as confusing now something like this wouldnt be bad tho. 

try:
    amount_of_ticket = input("Sorry about that {} Thats not a valid number. Please Try again").format(user_name)
    amount_of_ticket = int(amount_of_ticket)
Christian Beckett
Christian Beckett
11,123 Points

Np anymore questions feel free to ask me