class Hello:
 
    def __init__(self):
        self.name = "World"
 
    def sayHello(self, *names):
        if (len(names) == 0):
          print("Hello " + self.name)
          return
        for name in names:
          assert isinstance(name, str)
          print("Hello " + name)
 
    def setName(self, newName):
        assert isinstance(newName, (str, int))
        self.name = str(newName)
 
    def getName(self):
        return self.name
 
hello = Hello()
hello.setName("EugeneX")
hello.sayHello()
hello.sayHello("Вася", "Петя")