python notimplemented exception

The beauty of Python [from cainiao to masters] -- NotImplemented Analysis I did not have the intention to encounter NotImplemented when I wrote the code today. I was wondering if it was the younger brother of NotImplementedError, so I did a little

Writing code today, inadvertently encountered notimplemented, I am a leng. It was Notimplementederror's brother, so I studied it a little bit. notimplemented hence the name Incredibles. Is "not implemented." Usually used in some algorithms, such as

In Python, the properties of data and the methods of handling data are collectively referred to as attributes. In fact, the method is just a callable property. In addition to these two, we can also create attributes, without changing the class

The functions that begin and end with double underscores in Python are called special functions, and Python automatically views the special methods of invoking these instances when it performs some specific operations on the instance, making it easy

This article according to Python 3.6.5 frustration built-in constants writing, the official text is relatively short, we can directly see the original text.There are constants that exist in the built-in namespaces (the built-in namespace), as

This article address: http://www.cnblogs.com/archimedes/p/python-modules.html, reprint please indicate source address.Module IntroductionIf you exit the Python interpreter again, all definitions (variables and functions) you created previously are

Translation The Python tutorial#modules 6. Modules If you exit from the Python interpreter and then re-enter, the previously defined names (functions and variables) are lost. Therefore, if you want to write a longer program, it is better to use a

Description Device Get(self, instance, owner) Called when a property is accessed Set(Self, instance, value) Called when an attribute is assigned a value Delete(Self, instance) Called when an attribute is

Python BASICS (12)-module, python basics-Module URL: http://www.cnblogs.com/archimedes/p/python-modules.html.Module Introduction If you exit the Python interpreter and re-enter, all previously created definitions (variables and functions) will be

##例子13-3 unary operator + get a new counter instance, but no 0 value and negative counterFrom collections Import Counterct = Counter (' Abracadabra ')print (CT) #Counter ({' A ': 5, ' R ': 2, ' B ': 2, ' C ': 1, ' d ': 1})Ct[' r '] = 3ct[' d