class Patient:
    def __init__(self, name, surname, age, weight):
        self.name = name
        self.surname = surname
        self.age = int(age)
        self.weight = int(weight)

    def is_healthy(self):
        if self.age <= 30 and self.weight in range(50, 120):
            print('Good health, %s %s!' % (self.name, self.surname))
        elif self.age in range(30, 40) and self.weight in range(1, 51) or self.weight >= 120:
            print('Be careful, %s %s!' % (self.name, self.surname))
        elif self.age >= 40 and self.weight in range(1, 120):
            print('Medical care required, %s %s!' % (self.name, self.surname))
        else:
            print('Normal condition')
if __name__ == '__main__':
    Gamblou = Patient('Gamblou', 'Willings', 22, 75)
    Gamblou.is_healthy()

    Tiana = Patient('Tiana', 'Lurka', 37, 44)
    Tiana.is_healthy()

    Avian = Patient('Avian', 'Lazlo', 47, 111)
    Avian.is_healthy()

    Olcou = Patient('Olcou', 'Davian', 18, 22)
    Olcou.is_healthy()