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This module will expand your knowledge of tuples by teaching you about nesting tuples within other tuples.

Table of contents


This module is one in a collection of modules on Python designed for teaching ITSE 1359 Introduction to Scripting Languages: Python at Austin Community College in Austin, TX.

Viewing tip

I recommend that you open another copy of this module in a separate browser window and use the following links to easily find and view the Figuresand Listings while you are reading about them.

(Note to blind and visually impaired students: most of the Figures all of the Listings in this module are presented in plain text format and should be accessible using anaudio screen reader or a braille display.)


  • Figure 1 . Output from the code in Listing 1.
  • Figure 2 . Output from the code in Listing 2.
  • Figure 3 . Output from the code in Listing 3.
  • Figure 4 . Output from the code in Listing 4.
  • Figure 5 . Visualization of the tuples



Previous modules have introduced you to lists, subscriptions, sequences, mutable sequences, mappings, slicings, and tuples.

The earlier module titled Itse1359-1100-Indexing and Slicing Tuples showed you:

  • How to create a tuple.
  • How to access a tuple item using indexing.
  • How to slice a tuple.

This module will expand your knowledge of tuples by teaching you about nesting tuples within other tuples.

What is a tuple ?

To briefly repeat part of what you learned in the earlier module, a tuple is like a list whose values cannot be modified. In other words, a tuple is immutable.

  • Tuples are normally written as a sequence of items contained in (optional) matching parentheses.
  • A tuple is an immutable sequence.
  • Items in a tuple are accessed using a numeric index.

Tuples can contain other compound objects, including lists, dictionaries, and other tuples. Hence, tuples can be nested inside of other tuples.

Sample program

Listing 4 shows a complete listing of a Python program that

  • Creates two tuples.
  • Nests them in a third tuple.
  • Determines the length (number of items) in the tuple containing the two nested tuples.
  • Prints various items of information along the way.

A visualization of the tuples in this program is provided in Figure 5 .

Create two tuples

The beginning of the program is shown in Listing 1 .

Listing 1 . Beginning of the program.
# Illustrates creating and displaying nested tuples #--------------------------------------------------print("Create/print one tuple") t1 = 1,2print(t1) print("Create/print another tuple")t2 = "a","b" print(t2)

The code in Listing 1 creates and displays the two tuples.

Figure 1 shows the output produced by the code fragment in Listing 1 .

Figure 1 . Output from the code in Listing 1.
Create/print one tuple (1, 2)Create/print another tuple ('a', 'b')

Questions & Answers

How we are making nano material?
what is a peer
What is meant by 'nano scale'?
What is STMs full form?
scanning tunneling microscope
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
The nanotechnology is as new science, to scale nanometric
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
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
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
characteristics of micro business
for teaching engĺish at school how nano technology help us
How can I make nanorobot?
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
how can I make nanorobot?
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
what is the actual application of fullerenes nowadays?
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
is Bucky paper clear?
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Itse 1359 introduction to scripting languages: python. OpenStax CNX. Jan 22, 2016 Download for free at https://legacy.cnx.org/content/col11713/1.32
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