input: from typing import List
  
  def calculate_square_root(n: int) -> float:
      """ Calculates the square root of a user-defined positive number.
      >>> calculate_square_root(100)
      10.0
      >>> calculate_square_root(625)
      25.0
      """
      import math
      return math.sqrt(n)
output:     import math
      return math.sqrt(n)