setattr Function Instance Usage of python

Now this site has been learning language programs for a long time. But after understanding, if let this site to learn the language to start with the entrance, 1 is to begin to understand from the mastery of functions, the reason is very simple, any 1 code string is composed of functions, which is just like when we play games, first master the "w", "Q" key 1, so as to flexibly use the good operation of the whole program. I also bring you a good function-setattr.

Step 1, Describe

The setattr function corresponds to the getatt () function and is used to set the value of the property, which must exist.

Step 2, setattr syntax

setattr(object, name, value)

Step 3, Parameters

object--Object.

name--String, object property.

value--Attribute value.

Step 4, return value

Step 5, the following example shows how to use setattr:

>>>class A(object): ... bar = 1 ... 
>>> a = A() 
>>> getattr(a, 'bar') #  Get properties  bar  Value  1 
>>> setattr(a, 'bar', 5) #  Setting Properties  bar  Value  
>>> a.bar 5

setattr function instance extension

Change the value of the "age" property of the "Person" object

class Person:
 name = "John"
 age = 36
 country = "Norway"
setattr(Person, 'age', 40)

Syntax

setattr(object, attribute, value)