Python--__init__ method

I. Description

The __init__ method is used to customize its own unique features for an object

Second, the sample code is as follows

1 classluffystudent ():2School ='luffycity'3 4     def __init__(self, name, sex, age):5Self. Name =name6Self. Sex =Sex7Self. Age = Age8 9     defLearn (self):Ten         Print('is learning') One  A     defEat (self): -         Print('is eating') -  the     defSleep (self): -         Print('is sleeping')

The resulting object code is as follows:

1 stu1 = luffystudent (' Wang Yi  ' female ')  # Equivalent to luffystudent.__init__ (stu1, ' Wang Yi Ya ', ' female ', 18)

After adding the __init__ method, the following steps are instantiated for the class:

1, first produce an empty object, STU1

2, luffystudent.__init__ (stu1, ' Wang Yi Ya ', ' female ', 18)

To view the STU1 namespace:

1 Print (STU1. __dict__)

The results are as follows:

{' Name ': ' Wang Yi Ya ', ' Sex ': ' Female ', ' age ': 18}

This shows that the object has been tailored to its own unique characteristics.

To view the data properties of an object, the code is as follows:

1 Print (STU1. Name)2print(stu1. SEX)3print(stu1. Age)

The results are as follows:

Wang Yi Ya
Woman
18

Change the data properties of the object, with the following code:

1 ' Lee ya ' 2 Print (STU1. Name)

The results are as follows:

Lee ya

Delete the data properties of the object, as follows:

1 del STU1. Name2print(stu1.  __dict__)

The results are as follows:

{' Sex ': ' Female ', ' age ': 18}

To increase the object's data properties, the code is as follows:

1 ' Python Development ' 2 Print (STU1. __dict__)

The results are as follows:

{' Sex ': ' Female ', ' age ': ' class_name ': ' Python development '}

Python--__init__ method