Python: Signature
Just a reminder that we have such objects to inspect the function signatures， as PEP 362 – Function Signature Object indicates.
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Python: *expression
Argument Unpacking: *expression and **expression inside function calls
Digest of Fluent Python
Part I - Prologue
Digest of Fluent Python: Part VI - Metaprogramming
Chapter 19 - Dynamic Attributes and Properties The crucial importance of properties is that their existence makes it perfectly safe and indeed advisable...
Digest of Fluent Python: Part V - Control Flow (iterables, iterators, generators, context managers, corotines, concurrency, asyncio)
Chapter 14 - Iterables, Iterators, and Generators 一篇很好的 blog 以供参考：nvie.com: Iterables vs. Iterators vs. Generators 14.1 Sentence Take #1: A Sequence of ...
Digest of Fluent Python: Part IV - Object-Oriented Idioms (decorators, closure, references, mutability, recycling, pythonic 实践, inheritance)
Chapter 7 - Function Decorators and Closures 7.1 Decorators 101 A decorator is a callable which can take the decorated function as argument. (另外还有 class d...
Digest of Fluent Python: Part III - Functions as Objects
Chapter 5 - Python Functions are First-Class Objects Programming language theorists define a “first-class object” as a program entity that can be: Creat...
Digest of Fluent Python: Part II - Data Structures (sequence types, dicts, sets, strings, bytes, unicode)
Chapter 2 - An array of Sequences 2.1 Overview of Built-In Sequences Python inherited from ABC the uniform handling of sequences. Strings, lists, byte seq...
Digest of Fluent Python: Part I - Prologue (dunder methods)
Chapter 1 - The Python Data Model This chapter focus on special methods, i.e. dunder methods. code interpreted as comment ...
scikit-learn: Pipeline
Pipeline 的作用，见名知意，就是把多个 processor units chain up 起来。Pipeline 要求前 $N-1$ 个 processor units 是 Transformer，最后一个 processor unit 是 Estimator。我们举个例子看看就很好理解了：