input: Write a function to calculate the sum of the series 1 + ½ + ⅓ + ... + 1/n. The function should return the sum based on the given integer n.
  def seriesSum(n):
      total = 0
      for i in range(1, n+1):
          total += 1 / i
      return total
  
  assert seriesSum(5) == 2.283333333333333
  assert seriesSum(1) == 1.0
  assert seriesSum(10) == 2.9289682539682538
output: def seriesSum(n):
      total = 0
      for i in range(1, n+1):
          total += 1 / i
      return total