In this tutorial, we will discuss a Python program to find the second largest number in a list.

Related: Python program to remove duplicates from a list

Program code to find the second largest number in a list in Python

# Find the Second Largest Number in a List in Python
def find_second_largest(lst):
    lst = list(set(lst))  # Remove duplicates
    lst.sort()
    return lst[-2] if len(lst) > 1 else None

input_list = [3, 5, 1, 4, 5, 2]
second_largest = find_second_largest(input_list)
if second_largest is not None:
    print(f"The second largest number is {second_largest}.")
else:
    print("The list does not have enough unique elements.")

Explanation

1. Function Definition: The find_second_largest function takes a list as input, removes duplicates, sorts the list, and returns the second largest number.
2. Main Program: The program defines a list and finds the second largest number using the find_second_largest function. It then prints the result.

Output

• When you run the above program, it will find the second largest number in the list and print the result.

Conclusion

• In this tutorial, we learned how to find the second largest number in a list using a Python program.
• Understanding this concept is essential for data analysis and enhancing your programming skills.