Solution for:Python **Understanding the Fibonacci Sequence Using Python**The Fibonacci sequence is a series of numbers where each number is the sum of the two preceding ones, typically starting with 0 and 1. For example, the sequence begins as follows: 0, 1, 1, 2, 3, 5, 8, 13, etc.### Programming TaskYou are required to complete the `fibonacci()` function. This function accepts an index `n` as a parameter and returns the nth value in the Fibonacci sequence. For any negative index values, the function should return -1.#### Example- **Input:** 7- **Output:** `fibonacci(7) is 13`**Instructions:** Use a for loop and avoid recursion in your implementation.### Python Code Template:In this activity, you are provided with a code template in Python where you need to fill in the logic for the `fibonacci()` function.```pythondef fibonacci(n): # Type your code here.if __name__ == '__main__': start_num = int(input()) print(f'fibonacci({start_num}) is {fibonacci(start_num)}')```### Explanation of Each Part:- **Function Definition:** - `def fibonacci(n):` defines a function named `fibonacci`, which will calculate the Fibonacci number at the nth position.- **Main Program Execution:** - `if __name__ == '__main__':` checks if the file is being run directly or imported as a module. - It takes user input, converts it to an integer, and stores it in the variable `start_num`. - It then prints the result using the defined `fibonacci()` function.This exercise is designed to reinforce your understanding of loops and function definitions in Python while applying mathematical sequences.

Algorithm for the code:- 1 start 2. Define a function with an argument n. 3. Check the condition of…

The Fibonacci sequence begins with O and then 1 follows. All subsequent values are the sum of the previous two, ex: 0, 1, 1, 2, 3, 5, 8, 13. Complete the fibonacci() function, which has an index n as parameter and returns the nth value in the sequence. Any negative index values should return -1. Ex: If the input is: the output is: fibonacci (7) is 13. Note: Use a for loop and DO NOT use recursion. 425756.2904602.qx3zqy7 LAB ACTIVITY 1 def fibonacci (n): 2 3 #Type your code here. 4 5 if __name='__main__": 6 7 main.py start_num int(input()) print(f'fibonacci({start_num}) is {fibonacci(start_num)}') 10/10 Load default template...

The Fibonacci sequence begins with O and then 1 follows. All subsequent values are the sum of the previous two, ex: 0, 1, 1, 2, 3, 5, 8, 13. Complete the fibonacci() function, which has an index n as parameter and returns the nth value in the sequence. Any negative index values should return -1. Ex: If the input is: the output is: fibonacci (7) is 13. Note: Use a for loop and DO NOT use recursion. 425756.2904602.qx3zqy7 LAB ACTIVITY 1 def fibonacci (n): 2 3 #Type your code here. 4 5 if name='main__": 6 7 main.py start_num int(input()) print(f'fibonacci({start_num}) is {fibonacci(start_num)}') 10/10 Load default template...

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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