What are Python class attributes? How to access properties in Python?-Python Tutorial-php.cn

What are Python class attributes? How to access properties in Python?

Tomorin

Release： 2018-08-14 16:54:46

Original

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Python class attribute is a function that comes with the language. This article will explain through example analysis what Python class function is, and how to use Python to access attributes .

1.Python class attributesare:

1.__dict__: Attributes of the class (contains a dictionary consisting of data attributes of the class)

2.__doc__: Documentation string of the class

3.__name__: Class Name

4.__module__: The module where the class definition is located (the full name of the class is '__main__.className', if the class is located in an imported module mymod, then className.__module__ is equal to mymod)

5.__bases__: All parent class elements of the class (contains a tuple composed of all parent classes)

2.So how to go How about using Python to access attributes?

We can use the period . to access the properties of the object. Use the following class name to access class variables:

emp1.displayEmployee()
emp2.displayEmployee()
print "Total Employee %d" % Employee.empCount

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Contact one and two, let’s give an example

#!/usr/bin/python
# -*- coding: UTF-8 -*-
 class Employee:   &#39;所有员工的基类&#39;
   empCount = 0
 
   def __init__(self, name, salary):      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.salary
 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__

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The output result of executing the above code is as follows:

Employee.__doc__: 所有员工的基类
Employee.__name__: Employee
Employee.__module__: __main__
Employee.__bases__: ()
Employee.__dict__: {&#39;__module__&#39;: &#39;__main__&#39;, &#39;displayCount&#39;: 
<function displayCount at 0x10a939c80>, &#39;empCount&#39;: 0, &#39;displayEmployee&#39;: 
<function displayEmployee at 0x10a93caa0>, &#39;__doc__&#39;: 
&#39;\xe6\x89\x80\xe6\x9c\x89\xe5\x91\x98\xe5\xb7\xa5\xe7\x9a\x84\xe5\x9f\xba\xe7\xb1\xbb&#39;, 
&#39;__init__&#39;: <function __init__ at 0x10a939578>}

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