Skip to main content

-Tuples in Python-

 Tuple 

A tuple is a collection of objects, ordered and immutable. 

EX:

What all details are required to create an address?

 ● House Number 

● Apartment /Area 

● Street Name 

● Place 

● Pin code 

● District

 So for storing an address, will it be easy if we have to create separate variables for each of these parameters?

 Tuples help us in such cases.

 address= “12/1 “, “Rose Garden”, “The Mall”, “Rauria”,” Jorhat” 

Here the parameters separated by commas (,) are considered as a tuple and assigned to a variable.

Why ordered? 

It is indexed and can be iterated sequentially (same as the list). 

Immutable

 Tuples once created, cannot be changed. 

eg: address= “12/1 “, “Rose Garden”, “The Mall”, “Rauria”,” Jorhat”

 address=( “12/1 “, “Rose Garden”, “The Mall”, “Rauria”,” Jorhat”) 

Here, both are tuples. () are optional in creating a tuple. Objects separated by commas form a tuple.

 Note: Tuples are sequences, just like lists. indexing, slicing, and functions are common for lists and tuples.  The only difference is that mutable functions like insert, remove,  etc cannot be used with tuple.

 Also, the replacement of objects is not allowed in tuples.

 A tuple once created, cannot be modified.


 Packing/Unpacking of tuple

 address=( “12/1 “, “Rose Garden”, “The Mall”, “Lauria”,” Jorhat”) 

 Here, several elements are referred to together with a single name. t This is known as packing. houseNo,apartment,street,location,district=address

 Here each element of the tuple- ‘address’, will be assigned to each variable on left. This is known as unpacking. 

Now, houseNo  has a value of “12/1” apartment has a value of “Rose Garden” etc.

 The same technique can be used in multiple variable assignments also. eg: x,y,z=1,2,3 ( x will be assigned 1, y 2 and z 3)

Create a tuple that stores the address of a student, unpack it into separate variables, and print it.



 


Create a tuple that stores the phone number of a student. (only one element) 



 If the comma is not there, it will be treated as a string. The below program illustrates it. 







 Output






Note: type() returns the datatype of a variable.

From the address tuple created above, print only the house no. (concept : indexing)








Print each element of the above address in separate lines. (concept :iteration) 



 Create a tuple containing 10 marks of a student. 

From the above tuple,

 ● Find if the student has scored 100% in a subject (use ‘in’) 

● Print no of subjects in which student has scored 90 (use count() ) 

● Marks of first 5 subjects (concept: slicing) 

● Marks of last 3 subjects (concept: slicing) 














Calculate the average marks and print it.


Comments

Popular posts from this blog

- Animating characters using pygame -

If you see closely you can see that the mickey mouse animation is made out of a lot of shapes.  But to create something like this we need to make a very complex code. The other way around it is to use an image, other than the basic shapes, pygame also can show images.  Using images :  Steps to use images in my game: > find the image you want to use  > move it to the directory where you have created your code  > import/load image  To load the image we will first create an object and then use the image. load method to add the image to the object.  here, we have created an object called an image.  We then use the "pygame.image.load" to find the file in the directory ocean.png has to be replaced with the filename of your file.  To place the object on a particular point of the screen we use the blit function.  this function means that we are going to add the image onto the screen at position 0,0 mickey mouse is winking  Usi...

- Object Oriented Programming -

In OOP, we can represent an entity using a class.  A class bundles data (features/properties of entity - color, height, width) and functionality (movement, expression) together.  An instance of a class is known as an object.  Which is the only cartoon series that had predicted that Trump would be elected as the president of the USA and also predicted the coronavirus spread?   Answer: Simpsons.  Simpsons is a very popular animated show. You can build something similar with python.  But have you ever wondered, how Simpsons look the same in all the series? Only his movement looking and, expression change but his main features like color, height, and face look exactly the same all the time.  This is because we create a ‘blueprint’ of Simpsons and whenever we have to simulate him on screen we use this blueprint. This keeps a record of all the features of Simpsons and recreates it whenever we want.  This is where Object-Oriented Programming(OOP) h...

– Sequences, Algorithms and Programs in Python ---

 Before moving forward, Let's learn how to install Python software in your System which is very important for the further understanding of these topics. Imagine, you are a regular customer of Uncle Sam’s Pizza restaurant, can you help Uncle Sam prepare the menu and take a printout of it? Which application will you use for that? You will type the menu using MS word and then take a printout of it. right?  So, you know that we can use MS Word to create documents. Similarly, if you want to write a python program, you need an IDE (Integrated development environment). This IDE helps you to write a python program and then run it so that you can see the result/output of the program.  Steps to install python/IDE in your local system. (Windows /MAC )   Note : Prerequisite for installing python in Windows- Windows 8 or above. go to this website .   1. Click on download python as per your OS. Mac users may download the Mac version. Windows users download depending on 32-bit...