Access Class Properties through Instance Name
Can I access class properties through an instance name?
Yes, you can access class properties through an instance name, as long as there is no instance property that has the same name as a class property.
When you reference a property through the instance name in the following form:
Python will search for the given property name in instance_name.__dict__ first. If match found, return the value. If not match found, continue with the next step.
In the next step, Python will search the given property name in class_name.__dict__. If match found, return the value. If not match found, return error.
The following Python code shows you a good example of accessing class property through a instance name:
>>> class user(): ... nextID = 1 ... def __init__(self,name="Joe",age=25): ... self.id = user.nextID ... self.name = name ... self.age = age ... user.nextID = user.nextID + 1 ... >>> x = user() >>> x.nextID 2
2017-09-09, 111👍, 0💬
Where to find tutorials on how to create Your Own Functions in PHP? A collection of tutorials to ans...
How To Select an Exiting Database in PHP? The first thing after you have created a connection object...
How To Support Multiple-Page Forms in PHP? If you have a long form with a lots of fields, you may wa...
Where to find tutorials on how to use PHP built-in functions to manage arrays? A collection of tutor...
Why Do You Need to Filter Out Empty Files in PHP? When you are processing uploaded files, you need t...