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B �x�c� � @ s� d Z dd� ZG dd� de�ZG dd� de�ZG dd� de�Zy,d d lm Z m Z mZmZm Z mZmZmZ W n* ek r� d dlmZm Z de_Y nX G d d� de�ZG dd� ded�ZdS )z3Abstract Base Classes (ABCs) according to PEP 3119.c C s d| _ | S )a� A decorator indicating abstract methods. Requires that the metaclass is ABCMeta or derived from it. A class that has a metaclass derived from ABCMeta cannot be instantiated unless all of its abstract methods are overridden. The abstract methods can be called using any of the normal 'super' call mechanisms. Usage: class C(metaclass=ABCMeta): @abstractmethod def my_abstract_method(self, ...): ... T)�__isabstractmethod__)Zfuncobj� r �(/opt/alt/python37/lib64/python3.7/abc.py�abstractmethod s r c s$ e Zd ZdZdZ� fdd�Z� ZS )�abstractclassmethodaJ A decorator indicating abstract classmethods. Similar to abstractmethod. Usage: class C(metaclass=ABCMeta): @abstractclassmethod def my_abstract_classmethod(cls, ...): ... 'abstractclassmethod' is deprecated. Use 'classmethod' with 'abstractmethod' instead. Tc s d|_ t� �|� d S )NT)r �super�__init__)�self�callable)� __class__r r r - s zabstractclassmethod.__init__)�__name__� __module__�__qualname__�__doc__r r � __classcell__r r )r r r s r c s$ e Zd ZdZdZ� fdd�Z� ZS )�abstractstaticmethodaJ A decorator indicating abstract staticmethods. Similar to abstractmethod. Usage: class C(metaclass=ABCMeta): @abstractstaticmethod def my_abstract_staticmethod(...): ... 'abstractstaticmethod' is deprecated. Use 'staticmethod' with 'abstractmethod' instead. Tc s d|_ t� �|� d S )NT)r r r )r r )r r r r D s zabstractstaticmethod.__init__)r r r r r r r r r )r r r 2 s r c @ s e Zd ZdZdZdS )�abstractpropertyaf A decorator indicating abstract properties. Requires that the metaclass is ABCMeta or derived from it. A class that has a metaclass derived from ABCMeta cannot be instantiated unless all of its abstract properties are overridden. The abstract properties can be called using any of the normal 'super' call mechanisms. Usage: class C(metaclass=ABCMeta): @abstractproperty def my_abstract_property(self): ... This defines a read-only property; you can also define a read-write abstract property using the 'long' form of property declaration: class C(metaclass=ABCMeta): def getx(self): ... def setx(self, value): ... x = abstractproperty(getx, setx) 'abstractproperty' is deprecated. Use 'property' with 'abstractmethod' instead. TN)r r r r r r r r r r I s r � )�get_cache_token� _abc_init� _abc_register�_abc_instancecheck�_abc_subclasscheck� _get_dump�_reset_registry� _reset_caches)�ABCMetar �abcc sR e Zd ZdZ� fdd�Zdd� Zdd� Zdd � Zddd�Zd d� Z dd� Z � ZS )r a� Metaclass for defining Abstract Base Classes (ABCs). Use this metaclass to create an ABC. An ABC can be subclassed directly, and then acts as a mix-in class. You can also register unrelated concrete classes (even built-in classes) and unrelated ABCs as 'virtual subclasses' -- these and their descendants will be considered subclasses of the registering ABC by the built-in issubclass() function, but the registering ABC won't show up in their MRO (Method Resolution Order) nor will method implementations defined by the registering ABC be callable (not even via super()). c s"