input: def square_root(x):
      """Raises an exception if the input value is not an integer and returns the square root of the input.
      >>> square_root(4)
      2.0
      >>> square_root('4')
      Traceback (most recent call last):
          ...
      TypeError: Input must be an integer
      """
      if not isinstance(x, int):
          raise TypeError('Input must be an integer')
      return x**0.5
output:     if not isinstance(x, int):
          raise TypeError('Input must be an integer')
      return x**0.5