Python Program to Display Fibonacci Sequence Using Recursion is a popular topic in programming. It is widely used to teach beginners the basics of recursion and how to use it to solve problems. However, with the rise of new technologies and programming languages, it is important to keep up with the latest trends and techniques in programming. In this article, we will provide a comprehensive guide on displaying the Fibonacci sequence using recursion in Python.

Introduction to Fibonacci Sequence

The Fibonacci sequence is a series of numbers in which each number is the sum of the two preceding ones. The sequence starts with 0 and 1; the following number is the sum of the previous two numbers. The sequence goes on forever and is often used in mathematics, science, and computer science.

What is Recursion?

Recursion is a technique in programming in which a function calls itself to solve a problem. In recursion, a function is called with a smaller version of the same problem, and the function keeps calling itself until it reaches a base case. The base case is the condition that stops the recursion from continuing. Recursion is a powerful technique that can be used to solve complex problems in programming.

Python Program to Display Fibonacci Sequence Using Recursion

Now that we have a basic understanding of the Fibonacci sequence and recursion let’s take a look at the Python program to display the Fibonacci sequence using recursion:

				
					def fibonacci(n):
    if n <= 1:
        return n
    else:
        return (fibonacci(n-1) + fibonacci(n-2))

nterms = int(input("Enter the number of terms: "))

if nterms <= 0:
    print("Please enter a positive integer")
else:
    print("Fibonacci sequence:")
    for i in range(nterms):
        print(fibonacci(i))

Let's take a closer look at the code:

  • We define a function called Fibonacci that takes an integer n as an argument.
  • If n is less than or equal to 1, we return n.
  • If n is greater than 1, we call the Fibonacci function recursively with n-1 and n-2 as arguments and return the sum of the two results.
  • We then ask the user to input the number of terms they want to display in the Fibonacci sequence.
  • If the user enters a non-positive integer, we ask them to enter a positive integer.
  • If the user enters a positive integer, we display the Fibonacci sequence using a for a loop.

We have provided a comprehensive guide on displaying the Fibonacci sequence using recursion in Python. We hope that this article has helped you better understand the basics of recursion and the Fibonacci sequence.


Thanks for reading. Happy coding!