Ta’rif: Button vidjeti ilovadagi tugmalarni ko’rsatish uchun ishlatiladi

class T2:

def total(self,s):

self.total = len(str(s))

 

t1 = T1()

t2 = T2()

t1.total(45)

t2.total(45)

print(t1.total) # Вывод: 55

print(t2.total) # Вывод: 2

# class Rectangle:

def __init__(self, width, height, sign):

self.w = int(width)

self.h = int(height)

self.s = str(sign)

def __str__(self):

rect = []

for i in range(self.h): # количество строк

rect.append(self.s * self.w) # знак повторяется w раз

rect = '\n'.join(rect) # превращаем список в строку

return rect

 

b = Rectangle(10, 3, '*')

print(b)

# class A:

def __init__(self, v1, v2):

self.field1 = v1

self.field2 = v2

def __str__(self):

return str(self.field1) + " " + str(self.field2)

 

a = A(3, 4)

print(a)

# inkapsulyatsiya # class A:

def _private(self):

print("Это приватный метод!")

>>> a = A()

>>> a._private()

Это приватный метод!

# class C(ABC):

@abstractmethod

def my_abstract_method(self, ...):

...

@classmethod

@abstractmethod

def my_abstract_classmethod(cls, ...):

...

@staticmethod

@abstractmethod

def my_abstract_staticmethod(...):

...
@property

@abstractmethod

def my_abstract_property(self):

...

@my_abstract_property.setter

@abstractmethod

def my_abstract_property(self, val):

...
@abstractmethod

def _get_x(self):

...

@abstractmethod

def _set_x(self, val):

...

x = property(_get_x, _set_x)

# class Descriptor:

...

@property

def __isabstractmethod__(self):

return any(getattr(f, '__isabstractmethod__', False) for

f in (self._fget, self._fset, self._fdel))

# class Foo:

def __getitem__(self, index):

...

def __len__(self):

...

def get_iterator(self):

return iter(self)
class MyIterable(ABC):
@abstractmethod

def __iter__(self):

while False:

yield None
def get_iterator(self):

return self.__iter__()
@classmethod

def __subclasshook__(cls, C):

if cls is MyIterable:

if any("__iter__" in B.__dict__ for B in C.__mro__):

return True

return NotImplemented
MyIterable.register(Foo)

# public # class employee:

def __init__(self, name, sal):

self.name=name

self.salary=sal

# >>> e1=Employee("Kiran",10000)

>>> e1.salary
10000
>>> e1.salary=20000
>>> e1.salary
20000

# Example: Protected Attributes

class employee:

def __init__(self, name, sal):

self._name=name # protected attribute

self._salary=sal # protected attribute

# >>> e1=employee("Swati", 10000)
>>> e1._salary
10000
>>> e1._salary=20000
>>> e1._salary
20000

# Example: Private Attributes

class employee:

def __init__(self, name, sal):

self.__name=name # private attribute

self.__salary=sal # private attribute

>>> e1=employee("Bill",10000)
>>> e1.__salary
AttributeError: 'employee' object has no attribute '__salary'

>>> e1=Employee("Bill",10000)

>>> e1._Employee__salary
10000
>>> e1._Employee__salary=20000
>>> e1._Employee__salary
20000

# Example: person.py

class person:

def __init__(self, name="Guest"):

self.__name=name

def setname(self, name):

self.__name=name

def getname(self):

return self.__name

# >>> from person import person

>>> p1=person()
>>> p1.getname()
'Guest'
>>> p1.setname('Bill')
>>> p1.getname()
'Bill'

# Example: property() function

class person:

def __init__(self):

self.__name=''

def setname(self, name):

print('setname() called')

self.__name=name

def getname(self):

print('getname() called')

return self.__name

name=property(getname, setname)

# >>> from person import person
>>> p1=person()
>>> p1.name="Steve"
setname() called
>>> p1.name
getname() called
'Steve'

# Example: property() function

class person:

def __init__(self, name):

self.__name=name

def setname(self, name):

print('setname() called')

self.__name=name

def getname(self):

print('getname() called')

return self.__name

def delname(self):

print('delname() called')

del self.__name

name=property(getname, setname, delname)

# >>> from person import person

>>> p1=person()
>>> p1.name="Steve"
setname() called
>>> del p1.name
delname() called

#