input: from typing import List
  
  def generate_python_script() -> str:
      """ Generate a Python script that contains a function with two parameters and returns the sum of the two parameters.
      >>> generate_python_script()
      'def add(x, y):\n  """Returns the sum of x and y"""\n  return x + y\n'
      """
output:     return 'def add(x, y):\n  """Returns the sum of x and y"""\n  return x + y\n'