What is this? (":")

Question

I don't understand why the colon is there. thanks in advance!!

Answer 1

Hello, Andrew Hewitt !
Please Look like a similar question. In this question there is an answer ;)
Good luck in programming on SoloLearn! https://www.sololearn.com/Discuss/1248397/?ref=app

Answer 2

Because you have placed there 😀
Joke apart, you missed language but i suppose that you refer to python.. if it python, well exception clause must be declared in this way