Python: Calculate the maximum aggregate from the list of tuples (pairs)

Python Collections: Exercise-24 with Solution

Write a Python program to calculate the maximum aggregate from the list of tuples (pairs).

Sample Solution:

Python Code:

# Import the defaultdict class from the collections module
from collections import defaultdict

# Define a function 'max_aggregate' that finds the maximum aggregate value in a list of tuple pairs
def max_aggregate(st_data):
    # Create a defaultdict 'temp' to store and aggregate marks for each student
    temp = defaultdict(int)
    
    # Loop through the list of tuples 'st_data' containing student names and marks
    for name, marks in st_data:
        # Update the 'temp' dictionary to aggregate the marks for each student
        temp[name] += marks
    
    # Find the student with the maximum aggregate using 'max' and a key function
    return max(temp.items(), key=lambda x: x[1])

# Create a list of tuple pairs 'students' with student names and marks
students = [('Juan Whelan', 90), ('Sabah Colley', 88), ('Peter Nichols', 7), ('Juan Whelan', 122), ('Sabah Colley', 84)]

# Print a message to indicate the display of the original list
print("Original list:")

# Print the content of 'students'
print(students)

# Print a message to indicate the display of the maximum aggregate value
print("\nMaximum aggregate value of the said list of tuple pair:")

# Call the 'max_aggregate' function with 'students' and print the result
print(max_aggregate(students)) 

Sample Output:

Original list:
[('Juan Whelan', 90), ('Sabah Colley', 88), ('Peter Nichols', 7), ('Juan Whelan', 122), ('Sabah Colley', 84)]

Maximum aggregate value of the said list of tuple pair:
('Juan Whelan', 212)

Flowchart:

Python Code Editor:

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