August 2021
Beginner to intermediate
118 pages
1h 29m
English
Content preview from Python Brain Teasers
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| Puzzle 11 | Click the Button |
| 1: | display = [] |
| 2: | buttons = [] |
| 3: | for n in range(10): |
| 4: | # A button is a function called when user clicks on it |
| 5: | buttons.append(lambda: display.append(n)) |
| 6: | |
| 7: | btn = buttons[3] |
| 8: | btn() |
| 9: | print(display) |
Guess the Output | |
|---|---|
|
Try to guess what the output is before moving to the next page. |
This code will print: [9]
You probably expected [3] since each lambda appends its n to display.
However, the ...
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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.