generate fibonacci series in python

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

1#Recursive fibonnaci series
2def fib(n,arr):
3    if n == 0 or n == 1:
4        return 1 
5    else:
6        arr.append(fib(n-1,arr) + fib(n-2,arr))
7        return fib(n-1,arr) + fib(n-2,arr)
8        
9n = 10
10arr = [1, 1]
11print(fib(n-1,arr))
12bl = set(arr)
13bb = list(bl)
14bb.sort()
15print([1] + bb)

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

1Fibonacci_input = int(input("Need Terms please give it: "))
2num1 =0
3num2 = 1
4count = 0
5go_india = True
6while go_india:
7   
8   if Fibonacci_input <= 0:
9      print("Please enter a positive integer")
10   elif Fibonacci_input == 1:
11      print("Fibonacci sequence is more than",Fibonacci_input,":")
12      print(num1)
13   elif Fibonacci_input > 1:
14      print("Fibonacci sequence:")
15      while count < Fibonacci_input:
16         print(num1)
17         nth = num1 + num2
18      
19         num1 = num2
20         num2 = nth
21         count += 1
22   else:
23      print('incorrect input')
24   
25   User_think = input('Do you want to cotinue? write "1 or one" if you want to continue or "2 or two" to exit: ').upper()
26   if User_think == 1 or "ONE":
27         User_think == True
28   elif User_think == 2 or 'TWO':
29      go_india == False
30      
31      print('thanks for using me')
32   else:
33      print('wront input closing the software')
34      go_india == False
35

1# Program to display the Fibonacci sequence up to n-th term
2
3nterms = int(input("How many terms? "))
4
5# first two terms
6n1, n2 = 0, 1
7count = 0
8
9# check if the number of terms is valid
10if nterms <= 0:
11   print("Please enter a positive integer")
12elif nterms == 1:
13   print("Fibonacci sequence upto",nterms,":")
14   print(n1)
15else:
16   print("Fibonacci sequence:")
17   while count < nterms:
18       print(n1)
19       nth = n1 + n2
20       # update values
21       n1 = n2
22       n2 = nth
23       count += 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