Program to print Fibonacci series in python up to a give number

In this python programming article, we are going to learn

• program to print fibonacci series in python

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Program to print first n fibonacci numbers in python

The python program to print fibonacci series using while loop is as follows:

 

# Owner : TutorialsInhand Author : Devjeet Roy

number = int(input("Enter upper limit: "))

a = 0
b = 1
sum_fib = 0
print(a,b, end=" ")
while True:
    sum_fib = a + b
    a = b
    b = sum_fib
    if sum_fib < number:
        print(sum_fib, end=" ")
    else:
        break

The output of the python program to print fibonacci numbers is as follows:

 

PS C:\Users\DEVJEET\Desktop\tutorialsInHand> python code.py                         En
Enter upper limit: 20
0 1 1 2 3 5 8 13
PS C:\Users\DEVJEET\Desktop\tutorialsInHand> python code.py
Enter upper limit: 24
0 1 1 2 3 5 8 13 21

Few important tips about the program

1. The fibonacci series is such a series which begins with 0 and 1 and the rest of the terms are the sums of their previous two terms.

2. Here, the user has given an upper limit which we have converted to int data type.

3. Thereafter, we found the sum of two numbers and we have assigned the second number to first number, the sum of the two numbers to the second number.

4. We printed the sum out, if it is lesser than the upper limit.

 

Python program to print fibonacci series using while loop snapshot:

Using above concept, you can try to write program to print fibonacci series in python using for loop. Give it a try.