Python: Find the second lowest total marks of any student(s) from the given names and total marks of each student using lists and Lambda

Last update on April 21 2025 12:57:42 (UTC/GMT +8 hours)

16. Find second lowest total marks from student data using lists

Write a Python program to find the second lowest total marks of any student(s) from the given names and marks of each student using lists and lambda. Input number of students, names and grades of each student.

Sample Solution:

Python Code:

# Create an empty list 'students' to store student names and their scores
students = []

# Create an empty list 'sec_name' (currently unused)
sec_name = []

# Initialize the variable 'second_low' to 0
second_low = 0

# Prompt the user to input the number of students
n = int(input("Input number of students: "))

# Loop to input names and scores for 'n' students
for _ in range(n):
   # Prompt the user to input the student's name
   s_name = input("Name: ")
   
   # Prompt the user to input the student's total marks (score)
   score = float(input("Total marks: "))
   
   # Append a list containing the student's name and score to the 'students' list
   students.append([s_name, score])

# Print a message to display the names and marks of all students
print("\nNames and Marks of all students:")
   
# Print the content of the 'students' list
print(students)

# Sort the 'students' list based on the scores in ascending order
order = sorted(students, key=lambda x: int(x[1]))

# Loop to find the second lowest score
for i in range(n):
   if order[i][1] != order[0][1]:
       second_low = order[i][1]
       break

# Print a message to display the second lowest score
print("\nSecond lowest Marks: ", second_low)

# Create a list 'sec_student_name' to store names of students with the second lowest score
sec_student_name = [x[0] for x in order if x[1] == second_low]

# Sort the names in 'sec_student_name' in alphabetical order
sec_student_name.sort()

# Print a message to display the names of students with the second lowest score
print("\nNames:")

# Loop to print the names of these students
for s_name in sec_student_name:
   print(s_name)

Sample Output:

Input number of students:  3
Name:  Avik Das 
Total marks:  89
Name:  ayan Roy
Total marks:  75
Name:  Sayan Dutta
Total marks:  93

Names and Marks of all students:
[['Avik Das ', 89.0], ['ayan Roy', 75.0], ['Sayan Dutta', 93.0]]

Second lowest Marks:  89.0

Names:
Avik Das

Flowchart:

For more Practice: Solve these Related Problems:

Write a Python program to read student names and marks into a list, then use lambda functions to sort and find the second lowest marks.
Write a Python program to extract and sort total marks from a list of student records and identify the student(s) with the second lowest score.
Write a Python program to implement a function that uses sorted() with a lambda to determine the second lowest mark and associated student names.
Write a Python program to use list comprehension to filter out the student with the lowest marks and then find the next lowest mark.

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