Last time we talked about the instance and constructor in instance.Today let us review them.
Instance is the object that possess corresponding characteristic in the class where it is from.
And if you want to define something for your instance in this type, or do something when
trying to initialise the action in the class, you may use constructor __init__,which are the
default entry of the class.For example:
Class Human:
\tdef __init__(self,name):(\t represent tab, which means 空4格 here)
\t\tself.name = name
\t\tself.run = False
\t\tself.running()
\tdef running(self):
\t\tself.run = True
human1 = Human("Zhangsan")#Instantiate one human with its attribute "name" is "Zhangsan"
print(human.run)#We have execute self.running() in constructor, the result would be True.
Here is the class with an instance method running and the constructor.When I instantiate the
human to the variable human1, what python is doing is going to the __init__, set the instance's
name as "Zhangsan",set the instance's run state as False(means not running),and then execute
the instance method,self.running(),same as Human.running(self).Then the self.run would
turned to be wrong.So now you have learned the basic part of class, you could attempt it on your
machine! Have fun and you would excavate more possibility!