Python Coding challenge - Day 236 | What is the output of the following Python Code?

 

The code provided consists of two parts: defining a dictionary and using the fromkeys method to create a new dictionary. Let's break it down:

Defining a Dictionary:

d = {'a': 1, 'b': 2, 'c': 3}

Here, d is a dictionary with three key-value pairs:

'a' maps to 1

'b' maps to 2

'c' maps to 3

Using dict.fromkeys:

print(dict.fromkeys(d, 0))

The dict.fromkeys method is used to create a new dictionary from the keys of an existing iterable (in this case, the dictionary d). The method signature is:

dict.fromkeys(iterable, value)

iterable: An iterable containing keys.

value: The value to assign to each key in the new dictionary.

In this code, d is used as the iterable. When d is used as an iterable, it provides its keys ('a', 'b', and 'c'). The second argument is 0, which means all keys in the new dictionary will have the value 0.

Therefore, the new dictionary created by dict.fromkeys(d, 0) will have the same keys as d but with all values set to 0:

{'a': 0, 'b': 0, 'c': 0}

Output:

The print statement will output:

{'a': 0, 'b': 0, 'c': 0}

In summary, the code defines a dictionary d and then creates a new dictionary with the same keys as d but with all values set to 0, and prints this new dictionary.