Python Program to Print the Fibonacci Series

Tutorialsrack 22/04/2020 Python

In this Python program, we will learn how to print the Fibonacci series.

What is the Fibonacci Series?

In mathematics, the Fibonacci numbers, commonly denoted Fn form a sequence, called the Fibonacci sequence, such that each number is the sum of the two preceding ones, starting from 0 and 1. That is,

F₀=0 and F₁=1

And 

F_n=F_n-1 + F_n-2

Examples of Fibonacci Series are 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55 and so on.

Here is the source code to print the Fibonacci series.

# Python Program to Print the Fibonacci Series

# Fibonacci series will start at 0 and travel upto below number
num = int(input("Enter the Range Number: "))

# first two terms
n1, n2 = 0, 1
count = 0

# check if the number of terms is valid
if num <= 0:
   print("Please enter a positive integer")
elif num == 1:
   print("Fibonacci sequence upto",num,":")
   print(n1)
else:
   print("Fibonacci sequence:")
   while count < num:
       print(n1)
       nth = n1 + n2
       # update values
       n1 = n2
       n2 = nth
       count += 1

Related Posts