December 2017
Beginner
624 pages
15h 38m
Korean
Content preview from Head First Python, 개정판 : 스스로 질문하며 답을 찾는 파이썬 학습서(Python 3)
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
지금 여기예요
4
461
예외 처리
함수 호출이 실패로 끝날 수 있습니다
네 가지 잠재적 문제 중 마지막은
do
_
search
함수의
log
_
request
호출과 관련 있습니다.
호출에 실패하면 어떤 일이 일어날까요?
항상 함수가 성공적으로 호출된다는 보장은 없습니다. 특히 함수가 외부 코드와
상호 동작할 때는 더더욱 그렇습니다.
4
백엔드 데이터베이스를 사용할 수 없는 상태에서는
InterfaceError
가 발생하면서
웹앱이 크래시된다는 사실은 이미 확인했습니다.
다른 문제도 발생할 수 있습니다.
3
번째 문제를 다루면서 추가한
sleep
(
15
)
행을
raise
문으로 바꿔서 문제를 시뮬레이션할 수 있습니다. 인터프리터가
raise
문을 실행하면 런타임
에러가 발생합니다. 웹앱을 다시 실행하면 이번에는 다른 에러가 발생합니다.
데이터베이스를
이용할 수
없어서 웹앱이
크래시되었어요.
뭔가 다른 문제가
발생하면서
웹앱이 다시
크래시되었어요.
다음 페이지로 넘어가기
전에 임시로 추가했던
‘
raise
’
문을 삭제하세요.
462 Chapter 11
뭘 해야 하죠?
확인된 문제 고찰
지금까지 ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.