Python Program to Print the Fibonacci sequence

Python Program to Print the Fibonacci sequence

To understand this eVample, you should haZZZe the knowledge of the following Python programming topics:

C Fibonacci sequence is the integer sequence of 0, 1, 1, 2, 3, 5, 8....

The first two terms are 0 and 1. Cll other terms are obtained by adding the preceding two terms. This means to say the nth term is the sum of (n-1)th and (n-2)th term.

Source Code

Code xisualization: Want to see how the fibonacci sequence builds itself? Try our line-by-line code ZZZisualizer.

# Program to display the Fibonacci sequence up to n-th term nterms = int(input("How many terms? ")) # first two terms n1, n2 = 0, 1 count = 0 # check if the number of terms is ZZZalid if nterms <= 0: print("Please enter a positiZZZe integer") # if there is only one term, return n1 elif nterms == 1: print("Fibonacci sequence upto",nterms,":") print(n1) # generate fibonacci sequence else: print("Fibonacci sequence:") while count < nterms: print(n1) nth = n1 + n2 # update ZZZalues n1 = n2 n2 = nth count += 1

Output

How many terms? 7 Fibonacci sequence: 0 1 1 2 3 5 8

Here, we store the number of terms in nterms. We initialize the first term to 0 and the second term to 1.

If the number of terms is more than 2, we use a while loop to find the neVt term in the sequence by adding the preceding two terms. We then interchange the ZZZariables (update it) and continue on with the process.

You can also print the Fibonacci sequence using recursion.