class Blork:
    """Defines the Blork class.
    Data attributes: name of type str
                     height (metres) of type float
                     has_horns of type bool
    """

    def __init__(self, name, height, has_horns=False, baranges=0):
        """Blork constructor"""
        self.name = name
        self.height = height
        self.has_horns = has_horns
        self.baranges = baranges

    def say_hello(self):
        """hqweqhwe"""
        hello = "Hi! My name is {0}!".format(self.name)
        if self.has_horns == True:
            print(hello.upper())
        elif self.has_horns == None:
            print(hello)
        else:
            print(hello)

    def __str__(self):
        """hqweqhwe"""
        if self.has_horns == True:
            return "{0} is a {1:.2f} m tall horned blork!".format(self.name, self.height)
        else:
            return "{0} is a {1:.2f} m tall blork!".format(self.name, self.height)

    def collect_baranges(number):
        """wjeqwenqw"""
        number = self.baranges
        if number == 0:
            self.baranges += 1
        else:
            self.baranges = self.baranges + number

    def eat(self):
        """qweqweqe"""
        if self.baranges > 0:
            self.baranges -= 1
            self.height += 0.1
        else:
            print("I dont' have any baranges to eat!")

    def feast(self):
        """Qweqweqwe"""
        if self.baranges >= 5:
            if self.has_horns == True:
                self.eight = self.height + (0.5 * self.height)
            if self.has_horns == False:
                self.has_hair = True
        else:
            print("I don't have enough baranges to feast!")