getattr() function analysis

1Brief

getattr(object, name [, default ])

object is an object, and name must be a string; if the value of name is an attribute of the object object, the function outputs the attribute of the object, which is equivalent to object.name.

class Student:def __init__(self,name):self.name = names = Stduent('zhangsan')getattr(s,'name')

The output result is zhangsan.
If the value of name is not an attribute of the object object, if the default value is set at this time, the function will output the default value; otherwise, an error will be reported.

class Student:def __init__(self,name):self.name = namegetattr(s,'age',1) #The attribute age does not exist, but a default value is provided, return the default value#will output 1

2 Application
In general, the above functions are multi-purposed with a certain attribute of object. However, for an object with multiple attributes, the getattr() function can be used when the type of the attribute needs to be called at present.When you can realize which property you need, you can type the name to get the corresponding value.