Introduction to the role of __init__ in Python

I saw that there is a function with a strange name in Python, __init__. I know that the underlined function will run automatically, but I don’t know the specific meaning of its existence..

Today I saw <>Chapter 11 Object-Oriented Programming, introduces it like this: "Notes to C++/Java/C# programmers

All class members (including data members) in Python are public , all methods are valid.

With one exception: if you use a data member name prefixed with a double underscore such as __privatevar, Python's name management system will effectively treat it as a private variable.

##There is a convention that if a variable is only used in a class or object, it should be prefixed with a single underscore. Other names will be regarded as public and can be used by other classes/objects. This is just a convention, not required by Python (unlike the double underscore prefix)

Also, note that the __del__ method is similar to the concept of destructor "

It suddenly dawned on me that __init_ _It is used as a constructor in a class, and it is written in a fixed way. It seems very rigid, but it actually makes sense

def __init__(self, name):
    '''Initializes the person's data.'''
    self.name = name
    print '(Initializing %s)' % self.name
    # When this person is created, he/she
    # adds to the population
    Person.population += 1

The name variable belongs to the object (it uses self assignment), so it is a variable of the object

The value of self.name is specified on a per-object basis, indicating its nature as a variable of the object.

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