I don't see where it's wrong

That´s my code

def checkio(number):
  if[[(number%5)==0] and [(number%3)==0]]:
    return("Fizz Buzz")
  elif(number%3)==0:
    return("Fizz")
  elif(number%5)==0:
    return("Buzz")
  else:
    return str(number)

And the error is that always says 'Fizz Buzz'.

Thanks for any help