input: Write a function to check if the input value is an integer and return the square root of the value. If the input is not an integer, raise a TypeError with the message 'Input must be an integer'.
  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(-1)==-1.0
  assert square_root("4")
output: def square_root(x):
      if not isinstance(x, int):
          raise TypeError('Input must be an integer')
      return x**0.5