input: Write a function to modify the given Python code so that it raises an exception if the input value is not an integer. If the input value is an integer, it should return the square root of the input value.
  def square_root(x):
      if not isinstance(x, int):
          raise TypeError('Input must be an integer')
      return x**0.5
  assert square_root(4)==2.0
  assert square_root(9)==3.0
  assert square_root(25)==5.0
  try:
      square_root('4')
  except TypeError as e:
      assert str(e)=='Input must be an integer'
  try:
      square_root(4.5)
  except TypeError as e:
      assert str(e)=='Input must be an integer'
output: def square_root(x):
      if not isinstance(x, int):
          raise TypeError('Input must be an integer')
      return x**0.5