To understand this example, you should have the knowledge of following Python programming topics:
A Fibonacci sequence is the integer sequence of 0, 1, 1, 2, 3, 5, 8....
The first two terms are 0 and 1. All 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.
# Python program to display the Fibonacci sequence up to n-th term using recursive functions
"""Recursive function to
print Fibonacci sequence"""
if n <= 1:
return(recur_fibo(n-1) + recur_fibo(n-2))
# Change this value for a different result
nterms = 10
# uncomment to take input from the user
#nterms = int(input("How many terms? "))
# check if the number of terms is valid
if nterms <= 0:
print("Plese enter a positive integer")
for i in range(nterms):
Note: To test the program, change the value of nterms.
In this program, we store the number of terms to be displayed in nterms.
A recursive function recur_fibo() is used to calculate the nth term of the sequence. We use a for loop to iterate and calculate each term recursively.
Visit here to know more about recursion in Python.