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Figure 5 . Output from code in Listing 9.
Instantiate and display two objects of TestClass<__main__.TestClass object at 0x00274910><__main__.TestClass object at 0x005A25F0>Add an instance variable to one object and display it 1234Try to display the same instance variable in the other object Traceback (most recent call last):File "1359-1430-13.py", line 18, in<module>print(ref02.iVar) AttributeError: 'TestClass' object has no attribute 'iVar'
Listing 10 . Complete program listing.
# Illustrates ability for object to modify itself at runtime #---------------------------------------------------------------------------class TestClass(object): def addInstanceVar(self,data):self.iVar = data print("Instantiate and display two objects of TestClass")ref01 = TestClass() print(ref01)ref02 = TestClass() print(ref02)print("Add an instance variable to one object and display it") ref01.addInstanceVar(1234)print(ref01.iVar) print("Try to display the same instance variable in the other object")print(ref02.iVar)
Figure 6 . Output from code in Listing 10.
Instantiate and display two objects of TestClass<__main__.TestClass object at 0x00224910><__main__.TestClass object at 0x00512850>Add an instance variable to one object and display it 1234Try to display the same instance variable in the other object Traceback (most recent call last):File "1359-1430-15.py", line 20, in<module>print(ref02.iVar) AttributeError: 'TestClass' object has no attribute 'iVar'
Listing 11 . Complete program listing.
# This program illustrates instance variables and the __init__ method #---------------------------------------------------------------------------class TestClass(object): def __init__(self,data):self.iVar01 = datadef addInstanceVar(self,data): self.iVar02 = dataprint("Instantiate and display two objects of TestClass") ref01 = TestClass("ABCD")print(ref01) ref02 = TestClass("DEFG")print(ref02) print("Display first instance variable from both objects")print(ref01.iVar01) print(ref02.iVar01)print("Add an instance variable to one object and display it") ref01.addInstanceVar(1234)print(ref01.iVar02) print("Try to display the same instance variable in the other object")print(ref02.iVar02)
Figure 7 . Output from code in Listing 11.
Instantiate and display two objects of TestClass<__main__.TestClass object at 0x00492E50><__main__.TestClass object at 0x00492E70>Display first instance variable from both objects ABCDDEFG Add an instance variable to one object and display it1234 Try to display the same instance variable in the other objectTraceback (most recent call last): File "1359-1430-17.py", line 26, in<module>print(ref02.iVar02) AttributeError: 'TestClass' object has no attribute 'iVar02'

Miscellaneous

This section contains a variety of miscellaneous information.

Housekeeping material
  • Module name: Itse1359-1430-Instance Variables
  • File: Itse1359-1430.htm
  • Published: 10/27/14
  • Revised: 03/04/15
Disclaimers:

Financial : Although the Connexions site makes it possible for you to download a PDF file for thismodule at no charge, and also makes it possible for you to purchase a pre-printed version of the PDF file, you should beaware that some of the HTML elements in this module may not translate well into PDF.

I also want you to know that, I receive no financial compensation from the Connexions website even if you purchase the PDF version of the module.

In the past, unknown individuals have copied my modules from cnx.org, converted them to Kindle books, and placed them for sale on Amazon.com showing me as the author. Ineither receive compensation for those sales nor do I know who does receive compensation. If you purchase such a book, please beaware that it is a copy of a module that is freely available on cnx.org and that it was made and published withoutmy prior knowledge.

Affiliation : I am a professor of Computer Information Technology at Austin Community College in Austin, TX.

-end-

Questions & Answers

where we get a research paper on Nano chemistry....?
Maira Reply
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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