What is the python built-in class attribute? How do I invoke Python built-in class properties?

In this article, let's look at the built-in class properties in Python, some of whom may have just come into contact with Python's programming language, python built-in propertiesThe understanding of the relatively small, not clear about python built-in classesAttribute this aspect of knowledge. In the next article, let's look at Python's built-in class properties.

Python built-in class properties

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

2.__DOC__: Document string for Class

3.__NAME__: Class name

4.__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)

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

The python built-in class property invocation instance is as follows:

#!/usr/bin/python#-*-coding:utf-8-*-class Employee:    ' base class for all employees '    empcount = 0    def __init__ (self, name, Sala RY):        self.name = name        self.salary = Salary        Employee.empcount + =            1 def displaycount (self):        print " Total Employee%d '% employee.empcount            def displayemployee (self):        print "Name:", Self.name, ", Salary:", Self.s Alary        print "employee.__doc__:", Employee.__doc__print "employee.__name__:", Employee.__name__print "Employee. __module__: ", Employee.__module__print" employee.__bases__: ", Employee.__bases__print" Employee.__dict__: ", employee.__dict__

Execute the above code to output the result as follows:

employee.__doc__: base class for all employees employee.__name__: employeeemployee.__module__: __ Main__employee.__bases__: () employee.__dict__: {' __module__ ': ' __main__ ', ' displaycount ': <function displayCount at 0x10a939c80>, ' Empcount ': 0, ' displayemployee ': <function displayemployee at 0x10a93caa0> ' __doc__ ': ' \xe6\ X89\x80\xe6\x9c\x89\xe5\x91\x98\xe5\xb7\xa5\xe7\x9a\x84\xe5\x9f\xba\xe7\xb1\xbb ', ' __init__ ': <function __init __ at 0x10a939578>}