March 2022
Intermediate to advanced
522 pages
13h 52m
Chinese
Content preview from Python语言及其应用（第2版）
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3
第 1 章
Python
初探
只有丑陋的语言才会流行。
Python
是一个例外。
——高德纳
1.1
谜题
让我们从两个小谜题及其解决方案开始。你认为下面两行代码的含义是什么？
(Row 1): (RS) K18,ssk,k1,turn work.
(Row 2): (WS) Sl 1 pwise,p5,p2tog,p1,turn.
看上去挺有技术范儿，似乎像是某种计算机程序。实际上，这是一幅
针织图案
。更准确地
说，以上代码片段描述的是如何编织袜子的足跟部分，如图
1-1
所示。
图 1-1：针织袜子
4
｜
第
1
章
就我而言，看懂它们的难度不亚于让猫咪搞明白数独拼图，但对我妻子来说这是轻而易举
的事。你要是也懂编织，看懂它自然不在话下。
来试试另一段从索引卡上找到的神秘文字。你马上就能明白这是要干什么，尽管可能不清
楚最终会做出什么东西。
1/2
杯黄油或者人造黄油
1/
2杯奶油
2.5
杯面粉
1
茶匙盐
1
汤匙糖
4
杯糊状土豆（冷却的）
确保在加入面粉之前所有材料都是冷却的。
混合所有材料。
揉搓均匀。
揉成
20
个球并冷藏。
对于每一个球：
在布上洒上面粉；
用擀面杖将球擀成圆饼；
入锅，炸至棕色；
翻面，继续炸。
就算不会做饭，你应该也能看出这是一份
食谱
1
：一系列食材以及准备工作。这到底是在制
作什么食物呢 ...
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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.