**Define a function that generates Fibonacci series up to n numbers**

**Note**: The Fibonacci numbers are numbers in integer order.

0,1,1, 2,3, 5,8, 13,21, 34,55, 89,144,… … …

In mathematical terms, an order of Fibonacci numbers is defined by the iteration relation.

**Learn more:**

### What is the Fibonacci sequence and Fibonacci series formula?

The first two terms are 0 and 1. All other terms are derived by combining the preceding two words. This is to say that the nth term is the total of **(n-1)th and (n-2)th term.**

### Fibonacci Series Algorithm:

**Step**1. Start**Step**2. read n**Step**3. define Fibonacci function- def fibo(n):

**Step**4. read x, y**Step**5. check while condition- while n>=x:
- z=x+y

**Step**6. End

### Fibonacci Series Example:

n=int(input("enter the n value:"))

def fibo(n):

x=0

y=1

while n>=x:

z=x+y

print(x)

x=y

y=z

fibo(n)

#### Output:

>>>

enter the n value:123

0

1

1

2

3

5

8

13

21

34

55

89

>

### Fibonacci Series code:

#Program to print 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 valid if nterms<= 0: print ("Please enter a positive integer") elif nterms== 1: print ("Fibonacci sequence upto", nterms, ":") print (n1) else: print ("Fibonacci sequence:") while count<nterms: print (n1) nth= n1+ n2 #update values n1=n2 n2=nth count+= 1

#### Output:

How many terms?12

Fibonacci sequence:

0

1

1

2

3

5

8

13

21

34

55

89

>

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