Python: Filter a dictionary based on values

Last update on April 21 2025 12:59:51 (UTC/GMT +8 hours)

42. Filter Dictionary Based on Values

Write a Python program to filter a dictionary based on values.

Visual Presentation:

Sample Solution:

Python Code:

# Create a dictionary 'marks' with student names as keys and their marks as values.
marks = {'Cierra Vega': 175, 'Alden Cantrell': 180, 'Kierra Gentry': 165, 'Pierre Cox': 190}

# Print a message indicating the start of the code section and the original dictionary.
print("Original Dictionary:")
print(marks)

# Print a message indicating the intention to filter marks greater than or equal to 170.
print("Marks greater than 170:")

# Use a dictionary comprehension to create a new dictionary containing only the key-value pairs where marks are greater than or equal to 170.
# Iterate through the key-value pairs in 'marks' and include them in the new dictionary if the value is greater than or equal to 170.
result = {key: value for (key, value) in marks.items() if value >= 170}

# Print the new dictionary containing only the filtered key-value pairs.
print(result) 

Sample Output:

Original Dictionary:
{'Cierra Vega': 175, 'Alden Cantrell': 180, 'Kierra Gentry': 165, 'Pierre Cox': 190}
Marks greater than 170:
{'Cierra Vega': 175, 'Alden Cantrell': 180, 'Pierre Cox': 190}

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Python program to filter a dictionary and return only those entries where the value exceeds a given threshold.
• Write a Python program to use a lambda function in dictionary comprehension to keep only key-value pairs satisfying a condition.
• Write a Python program to create a new dictionary by removing entries whose values do not meet a specified predicate.
• Write a Python function to filter a dictionary based on a dynamic condition provided as a parameter.

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