Python Tutorial for Beginners | Tuples in Python

This video will give you complete training in Tuples in Python Programming

Tuples
A tuple is a sequence of immutable Python objects. Tuples are sequences, just like lists. The main difference between the tuples and the lists is that the tuples cannot be changed, unlike lists. Tuples use parentheses whereas lists use square brackets.

Creating a tuple is as simple as putting different comma-separated values. Optionally, you can put these comma-separated values between parentheses. For eg,


The empty tuple is written as two parentheses containing nothing. tup1 = ();

To create a tuple containing a single value, we have to include a comma even though there is only one value.

tup1 = (50,)


Tuples as return values :

def swap(x, y):

return y, x


Functions can return tuples as return values. For example, we could write a function that swaps two parameters:

Then we can assign the return value to a tuple with two variables:

a, b = swap(a, b)


def swap(x, y):

x, y = y, x


In this case, there is no great advantage in making a swap a function. In fact, there is a danger in trying to encapsulate swap, which is the following tempting mistake:

If we call swap like this swap(a, b)



then a and x are aliases for the same value. Changing x inside swap makes x refer to a different value, but it has no effect on a in main. Similarly, changing y has no effect on b. This function runs without producing an error message, but it doesn’t do what we intended. This is an example of a semantic error.



Basic tuples operations, Concatenation, Repetition, in Operator, Iteration :

Tuples respond to the + and * operators much like strings; they mean concatenation and repetition here too, except that the result is a new tuple, not a string.



Python includes the following tuple functions-

Tuplelen()MethodDescription

The len() method returns the number of elements in the tuple.



Syntax

Following

is the syntax for len() method- len(tuple)



Parameters

tuple - This is a tuple from which max valued element to be returned.


Return Value

This method returns the elements from the tuple with maximum value

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This video was compiled by Mr. Rahul Rampurkar, 22 years is a Sun Certified Java Programmer, Sun Certified Java Architect, and an AWS Certified Solutions Architect. His expertise includes Java, Java EE, XML and Web Services, Database technologies, and Cloud Computing with specialization in AWS.


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