Inheritance is an important way of object-oriented programming because, by inheritance, subclasses can extend the functionality of the parent class.Recall the Animal class-level design, assuming we want to implement the following 4 kinds of animals:
Dog-Dogs;
Bat-bat;
Parrot-Parrot;
Ostrich-Ostrich.
If we classify mammals and birds, we can design a hierarchy of such classes:But if
...') P1= Person ('Parrot','male', 20,'Green Wings')Print(P1.__dict__) P1.eat ('Jinchan') Result: {'name':'Parrot','Sex':'male',' Age': 20,'Wing':'Green Wings'The parrot eats Jinchan to eat ...2. Advanced Class: Classic class, New Class modern class: All inherited object class is a new class. Python3x All classes are new classes, because classes in p
import JSON can be used, in the installation directory under the LIB, see the two packages (point into the carefully read these sources, there will be more harvest,) as follows:The Python2.6 version supports JSON encoding and decoding, supporting most of Python's built-in types and JSON conversions. The simplest example is as follows:>>>ImportJSON>>> data = {"spam":"Foo","Parrot": 42}>>> In_json = json.dumps (data)#Encode the Data>>>In_json'{"
Inheritance is an important way of object-oriented programming because, by inheritance, subclasses can extend the functionality of the parent class.Recall the Animal class-level design, assuming we want to implement the following 4 kinds of animals:
Dog-Dogs;
Bat-bat;
Parrot-Parrot;
Ostrich-Ostrich.
If we classify mammals and birds, we can design a hierarchy of such classes:But if
parent class constructor is not found
If not defined, automatically finds the parent class constructor
If the subclass is not defined, the constructor of the parent class takes arguments, and the argument to construct the object should be constructed according to the parent class argument
Multiple inheritance in re-inheritance
An important way of inheriting object-oriented programming, by inheriting that subclasses can extend the functionality of the parent class
If
This article mainly introduces the multiple inheritance in Python, is the basic knowledge of Python learning, code based on python2.x version, the need for friends can refer to the
Inheritance is an important way of object-oriented programming, because subclasses can extend the functionality of a parent class by inheriting it.
Recall the animal class design, assuming that we want to achieve the following 4 kinds of animals:
Dog-Dog;
Bat-bat;
Parrot
the supervisor, the good luck will have several sites to get search engine favor have a good ranking. But when the search engine algorithm upgrades, ranked down, their boss scolded, filled with discontent can only vent on the search engine.
Four, the seoer of the parrot
This kind of seoer is some pretend to be, like to take shortcuts, they generally do not have their own ideas, often parrot, when the sea
testing process.
55. Parrot Security forensics Operating System
The Parrot security operating system is a security-oriented operating system designed to implement penetration testing, computer forensics, reverse engineering, hacker intrusion, cloud penetration, privacy/anonymity, and password functions. This operating system is based on Debian and developed by Frozenbox network.
66. Bugtraq
Bugtraq
your own development space in the embedded field.
Finally, there are some miscellaneous which I will not classify.There are a variety of embedded learning methods.However, the best way is to turn to computers. Computers are the first teachers and the second teachers. Don't expect you to become a cool man. Learning knowledge is actually a process of building an understanding of the knowledge. Don't listen to Daniel's explanation immediately. First, you must have your own understanding. Even if
is that this cs426 can be used to download all the course materials, including the source code. If you are interested, try it.
Writing your own toy compiler using Flex, Bison and llvm
-This series of articles advocates using existing tools to experience how to implement compilers. Focus on fast and efficient implementation and focus on the front-end. Do not miss out if you are interested in understanding and learning llvm intermediate representations and working mechanisms.
See the following
, like TV stations, reflect the use modes of young people in China. If they are told that China is the country with the strictest social media controls in the world, Chinese college students are always skeptical, because they think the United States is the No. 1. (Views of foreign authors on China)
I like to raise the hand of a classmate who saw CCTV in the classroom last week. However, in general, no one raises his hand. But when I raised my hand to those who watched the video on Youku or Tudou
, Python also supports list, tuple, and dictionary as parameters. The parameters of list and tuple are passed in with * Arg. Dictinary is passed in as ** Arg.
>>> ARGs = [3, 6]>>> Range (* ARGs)
>>> Def parrot (voltage, state = 'a stiff ', Action = 'voom '):>>> D = {"voltage": "four million", "State": "bleedin 'demised", "action": "voom "}>>> Parrot (** D)
The Python syntax is too flexible.
Loop in
datacontract is in the inheritance system, the membership order of the parent class takes precedence regardless of the order value specified in the subclass.
The following code demonstrates the order of datamember:[Datacontract]Public class basetype{[Datamember] Public String zebra;}
[Datacontract]Public class derivedtype: basetype{[Datamember (Order = 0)] Public String bird;[Datamember (Order = 1)] Public String parrot;[Datamember] Public String dog
By encapsulating all the logic for an object, whether it's a Dog or a or a, you're User IceCreamShop able to keep all of the Logic and responsibilities of your object within its own scope. This lets avoid has to worry on other objects using methods that they shouldn ' t has access to.Let's take one last look at how your Dog methods took advantage of encapsulation. Let's say also had some methods for your pet parrot in there as well. Here's what your c
Huang Mei wisp son Richuria grandma Shan Congfei zhenshiyin lady Shong Shing Zhangbaoyu Shang Shang son Shang Lady Rong elder brother Rong elder daughter-in-law Rais-Ray-Darais Raichangron Lai sister-in-law Lai two family of the Lackey Grandma Lai big daughter-in-law Chuliang Chu Shian Jiutai age official deformity man silly elder sister silly Uncle Silly elder sister Mama Jin Township Houjin Hou chiming Gianguang Jianziliang Bau Medical abalone two abalone two daughter-in-law crazy Dream Godde
Reading "People, performance and professional ethics" after feeling quite deep. The story of a pig, chicken, and parrot takes us to the subject at the beginning of the article. In fact, in the beginning, I saw the first sentence, "in a magical jungle, there are many animals, including pigs, chickens and parrots." "I thought I opened the wrong way, I read a fairy tale." Haha, but it's fun to start with such a story ~As the story says, in peacetime work
Php Chinese character to pinyin. Php functions for converting Chinese characters to pinyin (modified by the SpGetPinyin function of dedecms (dedecms1_deincinc_fun_funadmin.php). The Dictionary of dedecms is incomplete ):? Phpfunctionpinyin ($ str, $ is php conversion of Chinese characters to pinyin
Php functions (modified by the SpGetPinyin function of dedecms (dedecms/include/inc/inc_fun_funAdmin.php). The Dictionary of dedecms is incomplete ):
0x80) {$ c = $ str [$ I]. $ str [$ I + 1]; $ I
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