Python Tricks-- Abstract Base Classes Keep Inheritance in Check
Python Tricks-- Abstract Base Classes Keep Inheritance in CheckAbstract Base Classes(ABCs) ensure that derived classes implement particular methods from the base class. In this chapter you’ll learn a....
Python Tricks: String Conversion(Every Class Needs a ___repr__)
Python Tricks: String Conversion(Every Class Needs a repr)When you define a custom class in Python and then try to print one of its instance to the console(or inspect in an interpreter session), you ....
Python Tricks--- Object Comparisons：“is” vs “==”
Python Tricks— Object Comparisons:“is” vs “==”When I was a kid, our neighbors had two twin cats. They looked seemingly identical–the same charcoal fur and the same piercing green eyes. Some p...
Python Tricks: Nothing to Return Here
Python Tricks: Nothing to Return HerePython adds an implicit return None statement to the end of any function. Therefore, if a function doesn’t specify a return value, it returns None by default. Thi....
Python Tricks : Function Argument Unpacking
Python Tricks: Function Argument UnpackingA really cool but slightly arcane feature is the ability to “unpack” funciton arguments from sequences and dictionaries with the and * operators. Let’s defi.....
Python Tricks : Fun With args and kwargs
Python Tricks: Fun With args and *kwargsI once pair-programmed with a smart Pythonista who would exclaim “argh!” and “kwargh!” every time he typed out a function definition with optional or keyword p....
Python Tricks : How to Write Debuggable Decorators
Python Tricks: How to Write “Debuggable” DecoratorsWhen you use a decorator, really what you’re doing is replacing one funciton with another. One downside of this process is that it “hides” some of t....
Python Tricks ：The Power Of Decorators
Python Tricks: The Power Of DecoratorsAt their core, Python’s decorators allow you to extend and modify the behavior of a callable(functions , methods, and classes) without Any sufficiently generic f....
Python Tricks ：Lambdas Are Single-Expression Functions 原创
Python Tricks: Lambdas Are Single-Expression FunctionsThe lambda keyword in Python provides a shortcut for declaring small anonymous functions. Lambda functions behave just like regular functions dec....
Python Tricks： A Shocking Truth About String Formatting（二）
接上文 Python Tricks： A Shocking Truth About String Formatting（一）https://developer.aliyun.com/article/1618445 #3 - Literal String Interpolation(Python3.6+)Python3.6 adds yet ano...
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