Python: Count number of items in a dictionary value that is a list

Last update on December 24 2024 13:01:20 (UTC/GMT +8 hours)

Write a Python program to count the number of items in a dictionary value that is a list.

Visual Presentation:

Sample Solution:

Python Code:

# Create a dictionary 'dict' with names as keys and lists of subjects as values.
dict =  {'Alex': ['subj1', 'subj2', 'subj3'], 'David': ['subj1', 'subj2']}

# Calculate the total number of subjects by summing the lengths of the lists (values) in the dictionary.
ctr = sum(map(len, dict.values()))

# Print the total count of subjects.
print(ctr) 

Sample Output:

5

Python Code Editor:

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