# take input
      num = int(input('Enter number of terms: '))
      # print fibonacci series
      a, b = 0, 1
      i = 0
      # check if the number of terms is valid
      if num <= 0:
          print('Please enter a positive integer.')
      elif num == 1:
          print('The Fibonacci series: ')
          print(a)
      else:
          print('The Fibonacci series: ')
          while i < num:
              print(a, end=' ')
              c = a + b
              a = b
              b = c
              i = i+1
      
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      Fibonacci Series

      beginner
      logic

      Fibonacci series in Python | In the Fibonacci series, the next element will be the sum of the previous two elements. The Fibonacci sequence is a series of numbers where a number is found by adding up the two numbers before it. Starting with 0 and 1, the sequence goes 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, and so on…

      As a rule, the expression is Xn= Xn-1+ Xn-2

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