Python Program to Find nth term of a Fibonacci Series

Python Program to Find nth term of a Fibonacci Series

Program to find nth fibonacci number in python; In this tutorial, you will learn how to find nth term in fibonacci series in python using for loop, while loop and recursion function.

Python Program to Find nth term of a Fibonacci Series

  • Fibonacci series in python using for loop
  • Fibonacci series python programming using while loop
  • Fibonacci series in python using recursion
  • Sum of fibonacci series in python

Fibonacci series in python using for loop

# Take input from user              
a=int(input("Enter the terms"))
f=0  
s=1
if a<=0:
    print("The requested series is ",f)
else:
    print(f,s,end=" ")
    for x in range(2,a):
        next=f+s                           
        print(next,end=" ")
        f=s
        s=next

Output

Enter the terms 15
0 1 1 2 3 5 8 13 21 34 55 89 144 233 377 

Fibonacci series python programming using while loop

# Python Fibonacci series Program using While Loop

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

# Initializing First and Second Values of a Series
i = 0
First_Value = 0
Second_Value = 1
           
# Find & Displaying Fibonacci series
while(i < Number):
           if(i <= 1):
                      Next = i
           else:
                      Next = First_Value + Second_Value
                      First_Value = Second_Value
                      Second_Value = Next
           print(Next)
           i = i + 1

Output

Please Enter the Range Number:  10
0
1
1
2
3
5
8
13
21
34

Fibonacci series in python using recursion

def FibRecursion(n):  
   if n <= 1:  
       return n  
   else:  
       return(FibRecursion(n-1) + FibRecursion(n-2))  
nterms = int(input("Enter the terms? "))  # take input from the user
  
if nterms <= 0:  # check if the number is valid 
   print("Please enter a positive integer")  
else:  
   print("Fibonacci sequence:")  
   for i in range(nterms):  
       print(FibRecursion(i))

Output

Enter the terms?  15
Fibonacci sequence:
0
1
1
2
3
5
8
13
21
34
55
89
144
233
377

Sum of fibonacci series in python

# Python to calculate sum of Fibonacci numbers
  
  
# Computes value of first 
# fibonacci numbers 
def calSum(n) : 
    if (n <= 0) : 
        return 0
   
    fibo =[0] * (n+1) 
    fibo[1] = 1
   
    # Initialize result 
    sm = fibo[0] + fibo[1] 
   
    # Add remaining terms 
    for i in range(2,n+1) : 
        fibo[i] = fibo[i-1] + fibo[i-2] 
        sm = sm + fibo[i] 
          
    return sm 
  

#take input from user
n=int(input("Enter the terms"))

#call calSum() function and print result
print("Sum of Fibonacci numbers is : " , 
      calSum(n)) 

Output

Enter the terms 10 
Sum of Fibonacci numbers is :  143 

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AuthorAdmin

My name is Devendra Dode. I am a full-stack developer, entrepreneur, and owner of Tutsmake.com. I like writing tutorials and tips that can help other developers. I share tutorials of PHP, Python, Javascript, JQuery, Laravel, Livewire, Codeigniter, Node JS, Express JS, Vue JS, Angular JS, React Js, MySQL, MongoDB, REST APIs, Windows, Xampp, Linux, Ubuntu, Amazon AWS, Composer, SEO, WordPress, SSL and Bootstrap from a starting stage. As well as demo example.

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