python fibbonacci

1#Python program to generate Fibonacci series until 'n' value
2n = int(input("Enter the value of 'n': "))
3a = 0
4b = 1
5sum = 0
6count = 1
7print("Fibonacci Series: ", end = " ")
8while(count <= n):
9  print(sum, end = " ")
10  count += 1
11  a = b
12  b = sum
13  sum = a + b
14

1def Fibonacci( pos ):
2        #check for the terminating condition
3        if pos <= 1 :
4                #Return the value for position 1, here it is 0
5                return 0
6        if pos == 2:
7                #return the value for position 2, here it is 1
8                return 1
9 
10        #perform some operation with the arguments
11        #Calculate the (n-1)th number by calling the function itself
12        n_1 = Fibonacci( pos-1 )
13 
14        #calculation  the (n-2)th number by calling the function itself again
15        n_2 = Fibonacci( pos-2 )
16 
17        #calculate the fibo number
18        n = n_1 + n_2
19 
20        #return the fibo number
21        return n
22 
23#Here we asking the function to calculate 5th Fibonacci
24nth_fibo = Fibonacci( 5 ) 
25 
26print (nth_fibo)

1# WARNING: this program assumes the
2# fibonacci sequence starts at 1
3def fib(num):
4  """return the number at index num in the fibonacci sequence"""
5  if num <= 2:
6    return 1
7  return fib(num - 1) + fib(num - 2)
8
9
10print(fib(6))  # 8

1# Program to display the Fibonacci sequence forever
2
3def fibonacci(i,j):
4  print(i;fibonacci(j,i+j))
5fibonacci(1,1)

1#Learnprogramo
2Number = int(input("How many terms? "))
3# first two terms
4First_Value, Second_Value = 0, 1
5i = 0
6if Number <= 0:
7print("Please enter a positive integer")
8elif Number == 1:
9print("Fibonacci sequence upto",Number,":")
10print(First_Value)
11else:
12print("Fibonacci sequence:")
13while i < Number:
14print(First_Value)
15Next = First_Value + Second_Value
16# update values
17First_Value = Second_Value
18Second_Value = Next
19i += 1