input: Write a function in Python to print the Fibonacci series.
  def printFibonacciSeries(n): 
    
      # Taking 1st two fibonacci nubers as 0 and 1 
      f1 = 0
      f2 = 1
      print(f1, f2, end = " ") 
    
      for i in range(2, n): 
          next = f1 + f2 
          print(next, end = " ") 
    
          # update values 
          f1 = f2 
          f2 = next
  
  assert printFibonacciSeries(1)==
  assert printFibonacciSeries(3)=="0 1 1"
  assert printFibonacciSeries(5)=="0 1 1 2 3"
  assert printFibonacciSeries(7)=="0 1 1 2 3 5 8"
  assert printFibonacciSeries(0)==
output: def printFibonacciSeries(n): 
      if n <= 0:
          return ""
      f1 = 0
      f2 = 1
      result = "0 1"
      for i in range(2, n): 
          next = f1 + f2 
          result += " " + str(next)
          f1 = f2 
          f2 = next
      return result