Python program to print the keys and values ​​of a tuple

In Python, a tuple is a useful data type for storing a collection of items. Sometimes, you may need to print the keys and values ​​of a tuple to understand or debug your code. In this article, we will discuss how to print the keys and values ​​of a tuple in Python.

We will review the syntax for accessing these elements and provide examples of how to do this. First, we will understand what a tuple is and what its keys and values ​​mean.

What does Python tuple mean?

• Tuples allow you to store multiple items in a single variable.

• Tuples are one of the four built-in data types in Python for storing collections of data.

• The last three are lists, collections, and dictionaries; each has a unique set of features and applications.

• Tuples are ordered collections that cannot be changed. Tuple is written in parentheses.

• Tuples are immutable, which means that once we construct a tuple, we cannot change, include, or delete any of its elements.

What are the keys and values ​​in the tuple?

Of course, keys and values ​​do not exist in pairs in tuples, since tuples only store a single instance of any object.

However, if we have to create a tuple containing keys and values, we can do so by creating a tuple of nested tuples, where each tuple will have two values, the first representing its key , the second represents its value i>.

Example

ListOfTuples = ((1, 4), (3, 5), (4, 5), (5, 6))

In the above line of code, tuple has a pair of tuples inside, so for example the first value of the outer tuple is having two A tuple of values. Here, the first value 1 is the key of this tuple and the second value 4 is its data value.

So, as we know, we can access tuples by index , we will use that index to access the inner tuple elements and again use it to access the keys and values.

print(ListOfTuples[0][0])

This will print the key of the first tuple in the outer tuple. But what if we don't know how many elements are in the outer tuple? If we use an index to access the inner element in this case, we may end up getting an index out of range error, which means we are trying to access an element that does not exist in the tuple.

Using the len() Python method

To solve this problem, we can use the len method to count the number of elements in the outer tuple and use it to print the keys and values ​​up to that number of elements.

But this requires using another statement in Python, the iteration statement. We have many options to choose from, but for the sake of simplicity we will use a for loop.

The for loop provides a simple way to iterate through all elements of an iterable object using the "in" operator.

A = (1, 2, 3)
for item in A:
   print(item)

In the above code, the program will iterate through each element present in the tuple named A and print the corresponding element on each iteration. Now let's move on to algorithms and discuss what we learned above and how we can use them to solve our problems.

algorithm

• First, we will create an outer tuple to store the nested inner tuple

• ExternalEach element of the tuple is a tuple object containing two elements

• To print, we will use a for loop to iterate over the outer tuple

• Print the first value of the inner tuple as key on each iteration

• Print the second value of the inner tuple as its data value.

At this point, the program will terminate after printing all keys and values ​​present in the outer tuple.

Example

Program to print the keys and values ​​of a tuple -

ListOfTuples = ((1, 4), (3, 5), (4, 5), (5, 6))
for item in ListOfTuples:
   print(f"Key : {item[0]} Value : {item[1]}")

Output

Key : 1 Value : 4
Key : 3 Value : 5
Key : 4 Value : 5
Key : 5 Value : 6

in conclusion

In this article, we learned about the meaning of keys and values ​​in tuples in Python. And how we can use for loop to print all the keys and values ​​in the tuple.

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