Friday 1 December 2023

What is the result of the following python code?

 What is the result of the following python code?


x = {1: "a", 2: "b"}

y = x.keys()

print(y)

Solution and Explanation:

The code you provided creates a dictionary x with keys 1 and 2, and then assigns the keys of the dictionary to the variable y. Finally, it prints the values of y. However, in Python 3, y will be a view object (dict_keys) representing the keys of the dictionary. To see the keys as a list, you can convert it to a list:

x = {1: "a", 2: "b"}

y = list(x.keys())

print(y)

Output: [1, 2]


 Let's break down the code step by step:

Dictionary Creation:

x = {1: "a", 2: "b"}

Here, a dictionary x is created with keys 1 and 2, each associated with a corresponding value ("a" and "b").

Getting Keys:

y = x.keys()

In this line, the keys() method is used on the dictionary x to obtain a view object that represents the keys of the dictionary. The dict_keys view is a dynamic view of the dictionary's keys.

Printing:

print(y)

This line prints the result of y, which is the dict_keys view. However, in Python 3, this view is not automatically converted to a list when printed.

If you want to see the keys as a list, you can convert the dict_keys view to a list, like this:

y = list(x.keys())

print(y)

Output:

[1, 2]

The final output, after converting the dict_keys view to a list, is a list containing the keys of the dictionary x. In this case, it's [1, 2].


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