input: Write a function to find the smallest number in a given list. The function should return this smallest number.
  def smallestNumber(nums):
      smallest = nums[0]
      for i in range(1, len(nums)):
          if nums[i] < smallest:
              smallest = nums[i]
      return smallest
output: def smallestNumber(nums):
      smallest = nums[0]
      for i in range(1, len(nums)):
          if nums[i] < smallest:
              smallest = nums[i]
      return smallest