August 2011
Intermediate to advanced
444 pages
8h 55m
Chinese
Content preview from 深入淺出程式設計
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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.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.
182 第六章
簡單又直接
展示字串，後面接著 4.000000e+ 0 0 。
"%s %e" % ("Value is", 16.0 ** 0.5)
為每一個字串格式找出對應的作用，我們已經先為你完成一個。
解答
"%7d" % (11232/3)
"%x" % 127
"%20s\n" % "Banana swirl"
"%s is $%4.2f" % ("Popsicle", 1.754)
"%s %f" % ("Value is", 16.0 ** 0.5)
"%07d" % (11232/3)
除字串外，也展示浮點數至兩位小數。
展示字串，後面接著 4.000000。
展示值，以 0 補綴。
將數字展示為 16 進位。
將字串補綴成 20 個字元，接著展示換行字元。
展示計算結果，以空格補綴。
回想一下你需要為交易檔建立的紀錄。每一行必須以換行字
元作結束。如果你將信用卡號碼、銷售價格與描述存放在名
為 credit_card、price 與 description 的變數裡，請寫下你會
使用什麼樣的字串格式︰
假如你只有一個值
要格式化，就不需
要在其前後加上圓
括號。
預設上，Python 會以
空格補綴。
16 進位的數字被用
在像是指定顏色之
類的地方。
\n 表示換行字元。
這表示使用 4 個字元。
這表示在小數點後面顯示
兩位數字。
值也可以是計算結果。
% 後面接著 0 表示「以 0 補綴」。
“%16s%07d%16s\n" % (credit_card, price*100, description)
信用卡號碼應該總是 ...
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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.