Python-related knowledge

Declaring a function in Python is similar to declaring a class

def functionname (arge):    "function document String"    #函数体    #声明类class class name:    "Document String for class"    class body

Classic class:

Class Chinese:    ' This is a Chinese class '    pass# uses class Chinese to instantiate an object D1D1 = Chinese () Print D1

New class:

#新式类class Chinese2 (object):    Pass

#属性: A class is used to describe a class of things, the object of which refers to an individual in this kind of thing, is the thing must have the attribute, the attribute divides into
#1, the Data property is the variable
#2, function properties, which are functions, are often called methods in object-oriented
#注意: Classes and objects use points to access their properties

Data properties

Class China:    goverment = "123" Print china.goverment

function properties

Class China:    goverment = "123"    def Sui_di (): #函数属性        print ("commonality")    def Cha_dui (self):        print "front" print China.govermentChina.sui_di ()

The invocation of the property

__DICT__: Properties of the Class (contains a dictionary, consisting of the data properties of the Class)

__DOC__: Document string for Class

__NAME__: Class name

__MODULE__: The module where the class definition resides (the full name of the class is ' __main__.classname ', if the class is in an import module mymod, then classname.__module__ equals Mymod)

__BASES__: All parent classes of a class make up elements that contain a tuple of all the parent classes

#类的其他属性
Print China. __name__
Print China. __doc__
Print China. __bases__
Print China. __module__

Python-related knowledge