Python – Add values to Dictionary of List

In this article, we will discuss how to add values to the dictionary of lists. 

We can add values to a dictionary by using a list, the input list would be the following structure:

[('key',value),...........,('key',value)]

So the above list is an input, which we can use with for loop to add values to the dictionary of lists.

Syntax:

for key, value in input:

    data[key].append(value)

where,

• key is the key in the input list
• value is the value in the input list

Example 1: Python program to create an input list of students subjects and add to the dictionary of list

Output:

dict_items([(‘bhanu’, [‘html’, ‘php’]), (‘suma’, [‘python’, ‘html/csscss’]), (‘rasmi’, [‘java’])])

Example 2:

Output:

dict_items([('bhanu', [10]), ('uma', [12]), ('suma', [11])])