内容简介
Python的简洁让你可以快速达到高产水平,但是这通常意味着你并没有用到它提供的所有功能特性。
有了《流利的Python语言(影印版 英文版)》,你将学会如何利用那些很容易被忽视的特性来编写有效且通顺的Python代码。作者Luciano Ramalho将带领你们遍历Python的核心语言特性和程序库,并展示精简代码、优化速度和可读性的方法。
很多富有经验的程序员尝试将Python扭曲成适合他们从其他语言中学到的模式,而从未发现超出他们经验的Python特性。通过《流利的Python语言(影印版 英文版)》,那些Python程序员将完全学会如何高效率地使用Python 3。
目录
Preface
Part I. Prologue
1. The Python Data Model
A Pythonic Card Deck
How Special Methods Are Used
Emulating Numeric Types
String Representation
Arithmetic Operators
Boolean Value of a Custom Type
Overview of Special Methods
Why len Is Not a Method
Chapter Summary
Further Reading
Part II. Data Structures
2. An Array of Sequences
Overview of Built-In Sequences
List Comprehensions and Generator Expressions
List Comprehensions and Readability
Listcomps Versus map and filter
Cartesian Products
Generator Expressions
Tuples Are Not Just Immutable Lists
Tuples as Records
Tuple Unpacking
Nested Tuple Unpacking
Named Tuples
Tuples as Immutable Lists
Slicing
Why Slices and Range Exclude the Last Item
Slice Objects
Multidimensional Slicing and Ellipsis
Assigning to Slices
Using + and * with Sequences
Building Lists of Lists
Augmented Assignment with Sequences
A += Assignment Puzzler
list.sort and the sorted Built-In Function
Managing Ordered Sequences with bisect
Searching with bisect
Inserting with bisect.insort
When a List Is Not the Answer
Arrays
Memory Views
NumPy and SciPy
Deques and Other Queues
Chapter Summary
Further Reading
3. Dictionaries and Sets
Generic Mapping Types
dict Comprehensions
Overview of Common Mapping Methods
Handling Missing Keys with setdefault
Mappings with Flexible Key Lookup
defaultdict: Another Take on Missing Keys
The___ missing___ Method
Variations of dict
Subclassing UserDict
Immutable Mappings
Set Theory
set Literals
Set Comprehensions
Set Operations
dict and set Under the Hood
A Performance Experiment
Hash Tables in Dictionaries
……
Part III. Functions as Objects
Part IV. Object-Orientedldioms
Part V. Control Flow
Part VI. Metaprogramming
Afterword
A. Support Scripts
Python Jargon
Index
精彩书摘
《流利的Python语言(影印版 英文版)》:
In concluding the chapter, we mentioned how several built—in types are registered to ABCs in the collections.abe module so you can ask isinstance(memoryview,abc.Sequence) and get True, even if memoryview does not inherit from abc.Se quence.And finally we went over the_subclasshook_magic, which lets an ABC recognize any unregistered class as a subclass, as long as it passes a test that can be as simple or as complex as you like—the examples in the standard library merely check for method names.
To sum up, I'd like to restate Alex Martelli's admonition that we should refrain from creating our own ABCs, except when we are building user—extensible frameworks—which most of the time we are not.On a daily basis, our contact with ABCs should be subclassing or registering classes with existing ABCs.Less often than subclassing or registering, we might use ABCs for isinstance checks.And even more rarely—ifever—we find occasion to write a new ABC from scratch.
……
流利的Python语言(影印版 英文版) [Fluent Python] 下载 mobi epub pdf txt 电子书 格式
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还没看完,只能说印刷不错,很多翻译书的文字真是不敢恭维
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挺好的一本书,适合机器学习入门,讲解详细。
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机器学习入门读物,值得推荐,期待效果中
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很好的书,适合学过基础的,价格也很实惠,优惠活动给力
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国内良心打印。相比国外的价格,真是不错。希望有很多的影印书。哈哈哈
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订单号59491621309包装人员极不负责任,把箱子装不下的燕窝硬挤进去,导致礼品变形严重。送人的搞成这样还得换货真的很麻烦。
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挺好,机器学习的书,侧重实践,教大家如何用scikit-learn里机器学习的各种算法实现数据分析。
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书本身是不错,但跟sklearn挂在网上的官方文档,好像也没多大区别。
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想进步,多看书。不怕花钱,有舍才有得。