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Write a Python Program to Print the Fibonacci Series of a Given Number

Updated: Dec 16, 2021

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.


nterms = int(input("Enter the Number: "))

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

# check if the number of terms is valid
if nterms <= 0:
   print("Please enter a positive integer")
# if there is only one term, return n1
elif nterms == 1:
   print("Fibonacci sequence upto",nterms,":")
# generate fibonacci sequence
   print("Fibonacci sequence:")
   while count < nterms:
       nth = n1 + n2
       # update values
       n1 = n2
       n2 = nth
       count += 1


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