input: 
  def calculate_square_root(number: float) -> float:
      """ Calculates the square root of a given positive number.
      >>> calculate_square_root(100)
      10.0
      >>> calculate_square_root(2)
      1.4142135623730951
      """
      import math
      return math.sqrt(number)
      
  
output:     if number < 0:
          raise ValueError("The number must be positive")