Find largest number

The provided Python code defines a function, find_largest_number, designed to determine the largest number within a given list of numbers. This function begins by checking if the input list is empty, returning an appropriate message if it is. Subsequently, it initializes a variable, ‘largest,’ with the first element of the list. The code then employs a loop to iterate through the list, comparing each element to the current value of ‘largest.’ If a larger number is encountered, ‘largest’ is updated accordingly. The function concludes by returning a formatted string that communicates the largest number identified in the input list. An example usage is provided, where a list of numbers, ‘numbers_list,’ is utilized as input for the function, and the result is printed. Overall, this code offers a straightforward and reusable solution for finding the largest number in a given list.

Source code

def find_largest_number(numbers):
    if not numbers:
        return "List is empty"

    largest = numbers[0]

    for num in numbers:
        if num > largest:
            largest = num

    return f"The largest number is: {largest}"


# Example usage:
numbers_list = [5, 10, 3, 8, 15, 7]
result = find_largest_number(numbers_list)
print(result)

Description

1. Function Definition:

The code begins by defining a function named find_largest_number that takes a list of numbers (numbers) as an argument.

2. Check for Empty List:

Within the function, there’s a conditional statement that checks if the input list is empty (if not numbers:).

3. Initialization:

Inside the function, a variable named largest is initialized with the first element of the input list (largest = numbers[0]).

4. Iteration through the List:

• The function uses a for loop to iterate through each element (num) in the input list.
• Within the loop, there’s an if statement that compares the current element (num) with the current value of largest.
• If num is greater than largest, the value of largest is updated to be equal to num.

5. Result Formatting:

After iterating through the entire list, the function returns a formatted string using an f-string (f"The largest number is: {largest}"), indicating the largest number found in the input list.

6. Example Usage:

The code provides an example usage outside the function, where a list of numbers (numbers_list = [5, 10, 3, 8, 15, 7]) is created.

7. Function Call and Result Storage:

The find_largest_number function is called with the example list as an argument, and the result is stored in a variable (result).

8. Print Result:

• Finally, the result is printed using the print function, displaying the message “The largest number is: [value]” where [value] represents the actual largest number found in the list.

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