Python: Filter even numbers from a given dictionary values

Last update on December 21 2024 07:28:33 (UTC/GMT +8 hours)

Write a Python program to filter even numbers from a dictionary of values.

Visual Presentation:

Sample Solution:

Python Code:

# Define a function 'test' that filters even numbers from dictionary values.
def test(dictt):
    # Use a dictionary comprehension to filter even numbers for each value in the dictionary.
    result = {key: [idx for idx in val if not idx % 2] for key, val in dictt.items()}   
    return result    

# Create a dictionary 'students' with string keys (class names) and lists of integers as values.
students = {'V' : [1, 4, 6, 10], 'VI' : [1, 4, 12], 'VII' : [1, 3, 8]} 

# Print a message indicating the start of the code section and the dictionary being processed.
print("\nOriginal Dictionary:")
print(students)

# Call the 'test' function to filter even numbers from dictionary values and print the result.
print("Filter even numbers from said dictionary values:")
print(test(students))

# Create another dictionary 'students' with string keys (class names) and lists of integers as values.
students = {'V' : [1, 3, 5], 'VI' : [1, 5], 'VII' : [2, 7, 9]} 

# Print a message indicating the start of the code section and the new dictionary being processed.
print("\nOriginal Dictionary:")
print(students)

# Call the 'test' function to filter even numbers from dictionary values and print the result.
print("Filter even numbers from said dictionary values:")
print(test(students)) 

Sample Output:

Original Dictionary:
{'V': [1, 4, 6, 10], 'VI': [1, 4, 12], 'VII': [1, 3, 8]}
Filter even numbers from said dictionary values:
{'V': [4, 6, 10], 'VI': [4, 12], 'VII': [8]}

Original Dictionary:
{'V': [1, 3, 5], 'VI': [1, 5], 'VII': [2, 7, 9]}
Filter even numbers from said dictionary values:
{'V': [], 'VI': [], 'VII': [2]}

Flowchart:

Python Code Editor:

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