input: Write a function to compute the square root of a number. 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(25)==5.0
  assert square_root(16)==4.0
  assert square_root(100)==10.0
output: def square_root(x):
      if not isinstance(x, int):
          raise TypeError('Input must be an integer')
      return x**0.5