# class Temperature:
#     ABSOLUTE_ZERO = -273.15

#     def __init__(self, celsius):
#         self.celsius = celsius

#     @property
#     def celsius(self):
#         return self._celsius

#     @celsius.setter
#     def celsius(self, value):
#         if value < self.ABSOLUTE_ZERO:
#             raise ValueError("Температурата не може да е под абсолютната нула")
#         self._celsius = value

#     def increase(self, value):
#         if value <= 0:
#             raise ValueError("Стойността за увеличаване трябва да е положителна")
#         self.celsius = self.celsius + value

#     @staticmethod
#     def celsius_to_fahrenheit(c):
#         return c * 9 / 5 + 32

#     @staticmethod
#     def fahrenheit_to_celsius(f):
#         return (f - 32) * 5 / 9

#     @staticmethod
#     def is_freezing(c):
#         return c <= 0

# temp = Temperature(25)
# print("Текуща температура:", temp.celsius)

# temp.increase(5)
# print("След увеличение:", temp.celsius)

# print("Във Фаренхайт:", Temperature.celsius_to_fahrenheit(temp.celsius))
# print("От Фаренхайт към Целзий:", Temperature.fahrenheit_to_celsius(32))
# print("Замръзване ли е:", Temperature.is_freezing(temp.celsius))
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# class User:
#     def __init__(self, username):
#         self.username = username

#     @property
#     def username(self):
#         return self._username

#     @username.setter
#     def username(self, value):
#         if len(value) >= 5:
#             self._username = value
#         else:
#             raise ValueError("poveche ot 5 simvola")

#     @staticmethod
#     def username_length(username):
#         return len(username)

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# class Rectangle:
#     def __init__(self, width, height):
#         self.width = width
#         self.height = height

#     def get_width(self):
#         return self._width

#     def set_width(self, width):
#         if width > 0:
#             self._width = width
#         else:
#             raise ValueError(">0!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!")

#     def get_height(self):
#         return self._height

#     def set_height(self, height):
#         if height > 0:
#             self._height = height
#         else:
#             raise ValueError(" > 0!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!")

#     width = property(get_width, set_width)
#     height = property(get_height, set_height)

#     @staticmethod
#     def is_square(width, height):
#         return width == height
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class Student:
    def __init__(self, grade):
        self.grade = grade

    def get_grade(self):
        return self._grade

    def set_grade(self, grade):
        if 2.00 <= grade <= 6.00:
            self._grade = grade
        else:
            raise ValueError("Оценката трябва да е между 2.00 и 6.00")

    grade = property(get_grade, set_grade)

    @staticmethod
    def has_passed(grade):
        return grade >= 3.00
student = Student(4.50)
print("Текуща оценка:", student.grade)
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