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//usr/lib/python3/dist-packages/attr/__pycache__/_make.cpython-38.pyc
U ]�]� � @ s� d dl mZmZmZ d dlZd dlZd dlZd dlZd dlZd dl Z d dl m Z ddl m Z ddlmZmZmZmZmZmZ ddlmZmZmZmZmZ ej Z dZ d Z d Z d Z!d Z"ei �Z#e� Z$G d d� de�Z%e%� Z&e&ddddddddddddf dd�Z'dd� Z(e(ddddg�Z)dd� Z*dd � Z+d d � Z,d d � Z-d!d"� Z.d#d$� Z/G d%d&� d&e�Z0d'Z1d(d)� Z2dbd*d�Z3e3Z4e�r|d+d,� Z5nd-d,� Z5d.d/� Z6d0d1� Z7d2d3� Z8d4d5� Z9d6d7� Z:d8d9� Z;d:d;� Z<dcd<d=�Z=e�>� Z?d>d?� Z@ddd@dA�ZAdBdC� ZBdDdE� ZCdFdG� ZDdHdI� ZEdJdK� ZFdLdM� ZGdNdO� ZHG dPdQ� dQe�ZIdRdS� eIjJD �ZKe9e=eAeIeKdT�eKdT�dUdS� eKD �dT�ZIG dVdW� dWe�ZLe=eAeL��ZLe3ddddX�G dYdZ� dZe��ZMeffd[d\�ZNe3ddd]�G d^d_� d_e��ZOd`da� ZPdS )e� )�absolute_import�division�print_functionN)� itemgetter� )�_config)�PY2�isclass� iteritems�metadata_proxy� ordered_dict�set_closure_cell)�DefaultAlreadySetError�FrozenInstanceError�NotAnAttrsClassError�PythonTooOldError�UnannotatedAttributeErrorz__attr_converter_{}z__attr_factory_{}z= {attr_name} = _attrs_property(_attrs_itemgetter({index})))ztyping.ClassVarz t.ClassVarZClassVarZ_attrs_cached_hashc s, e Zd ZdZdZ� fdd�Zdd� Z� ZS )�_Nothingz� Sentinel class to indicate the lack of a value when ``None`` is ambiguous. ``_Nothing`` is a singleton. There is only ever one of it. Nc s" t jd kr tt | ��| �t _t jS �N)r � _singleton�super�__new__��cls�� __class__� �,/usr/lib/python3/dist-packages/attr/_make.pyr : s z_Nothing.__new__c C s dS )N�NOTHINGr ��selfr r r �__repr__? s z_Nothing.__repr__)�__name__� __module__� __qualname__�__doc__r r r! � __classcell__r r r r r 1 s r TFc C s� t || | �\} } |dk r0|dk r0|dk r0td��| dk r`| tk rHtd��t| �sXtd��t| �} |dkrli }t| ||d|||||| | | d� S )a Create a new attribute on a class. .. warning:: Does *not* do anything unless the class is also decorated with `attr.s`! :param default: A value that is used if an ``attrs``-generated ``__init__`` is used and no value is passed while instantiating or the attribute is excluded using ``init=False``. If the value is an instance of `Factory`, its callable will be used to construct a new value (useful for mutable data types like lists or dicts). If a default is not set (or set manually to ``attr.NOTHING``), a value *must* be supplied when instantiating; otherwise a `TypeError` will be raised. The default can also be set using decorator notation as shown below. :type default: Any value :param callable factory: Syntactic sugar for ``default=attr.Factory(callable)``. :param validator: `callable` that is called by ``attrs``-generated ``__init__`` methods after the instance has been initialized. They receive the initialized instance, the `Attribute`, and the passed value. The return value is *not* inspected so the validator has to throw an exception itself. If a ``list`` is passed, its items are treated as validators and must all pass. Validators can be globally disabled and re-enabled using `get_run_validators`. The validator can also be set using decorator notation as shown below. :type validator: ``callable`` or a ``list`` of ``callable``\ s. :param repr: Include this attribute in the generated ``__repr__`` method. If ``True``, include the attribute; if ``False``, omit it. By default, the built-in ``repr()`` function is used. To override how the attribute value is formatted, pass a ``callable`` that takes a single value and returns a string. Note that the resulting string is used as-is, i.e. it will be used directly *instead* of calling ``repr()`` (the default). :type repr: a ``bool`` or a ``callable`` to use a custom function. :param bool eq: If ``True`` (default), include this attribute in the generated ``__eq__`` and ``__ne__`` methods that check two instances for equality. :param bool order: If ``True`` (default), include this attributes in the generated ``__lt__``, ``__le__``, ``__gt__`` and ``__ge__`` methods. :param bool cmp: Setting to ``True`` is equivalent to setting ``eq=True, order=True``. Deprecated in favor of *eq* and *order*. :param hash: Include this attribute in the generated ``__hash__`` method. If ``None`` (default), mirror *eq*'s value. This is the correct behavior according the Python spec. Setting this value to anything else than ``None`` is *discouraged*. :type hash: ``bool`` or ``None`` :param bool init: Include this attribute in the generated ``__init__`` method. It is possible to set this to ``False`` and set a default value. In that case this attributed is unconditionally initialized with the specified default value or factory. :param callable converter: `callable` that is called by ``attrs``-generated ``__init__`` methods to converter attribute's value to the desired format. It is given the passed-in value, and the returned value will be used as the new value of the attribute. The value is converted before being passed to the validator, if any. :param metadata: An arbitrary mapping, to be used by third-party components. See `extending_metadata`. :param type: The type of the attribute. In Python 3.6 or greater, the preferred method to specify the type is using a variable annotation (see `PEP 526 <https://www.python.org/dev/peps/pep-0526/>`_). This argument is provided for backward compatibility. Regardless of the approach used, the type will be stored on ``Attribute.type``. Please note that ``attrs`` doesn't do anything with this metadata by itself. You can use it as part of your own code or for `static type checking <types>`. :param kw_only: Make this attribute keyword-only (Python 3+) in the generated ``__init__`` (if ``init`` is ``False``, this parameter is ignored). .. versionadded:: 15.2.0 *convert* .. versionadded:: 16.3.0 *metadata* .. versionchanged:: 17.1.0 *validator* can be a ``list`` now. .. versionchanged:: 17.1.0 *hash* is ``None`` and therefore mirrors *eq* by default. .. versionadded:: 17.3.0 *type* .. deprecated:: 17.4.0 *convert* .. versionadded:: 17.4.0 *converter* as a replacement for the deprecated *convert* to achieve consistency with other noun-based arguments. .. versionadded:: 18.1.0 ``factory=f`` is syntactic sugar for ``default=attr.Factory(f)``. .. versionadded:: 18.2.0 *kw_only* .. versionchanged:: 19.2.0 *convert* keyword argument removed .. versionchanged:: 19.2.0 *repr* also accepts a custom callable. .. deprecated:: 19.2.0 *cmp* Removal on or after 2021-06-01. .. versionadded:: 19.2.0 *eq* and *order* NTF�6Invalid value for hash. Must be True, False, or None.z=The `default` and `factory` arguments are mutually exclusive.z*The `factory` argument must be a callable.) �default� validator�repr�cmp�hash�init� converter�metadata�type�kw_only�eq�order)�_determine_eq_order� TypeErrorr � ValueError�callable�Factory� _CountingAttr) r( r) r* r+ r, r- r/ r0 r. �factoryr1 r2 r3 r r r �attribI s: z���r; c C sx d� | �}d� |�dg}|rDt|�D ] \}}|�tj ||d�� q$n |�d� ttd�}ttd�|�dd �|� || S ) z� Create a tuple subclass to hold `Attribute`s for an `attrs` class. The subclass is a bare tuple with properties for names. class MyClassAttributes(tuple): __slots__ = () x = property(itemgetter(0)) z {}Attributeszclass {}(tuple):z __slots__ = ())�index� attr_namez pass)Z_attrs_itemgetterZ_attrs_property� � �exec) �format� enumerate�append�_tuple_property_patr �property�eval�compile�join)Zcls_name� attr_namesZattr_class_nameZattr_class_template�ir= �globsr r r �_make_attr_tuple_class� s � � rL � _Attributes�attrs� base_attrsZbase_attrs_mapc C s t | ��t�S )z� Check whether *annot* is a typing.ClassVar. The string comparison hack is used to avoid evaluating all string annotations which would put attrs-based classes at a performance disadvantage compared to plain old classes. )�str� startswith�_classvar_prefixes)Zannotr r r � _is_class_var s rS c C sH t | dd�}|dkri S | jdd� D ] }|t |dd�kr&i S q&|S )z$ Get annotations for *cls*. �__annotations__Nr )�getattr�__mro__)r �anns�base_clsr r r �_get_annotations s rY c C s | d j S )zQ Key function for sorting to avoid re-creating a lambda for every class. r ��counter��er r r �_counter_getter- s r^ c sl | j �t| �� |dk r@dd� t|�D �}t|t�s>|jtd� n�|dk�rdd� ��� D �}g }t� }� �� D ]Z\}}t |�r�qn|� |� �� |t �} t| t �s�| t kr�t� } n t| d�} |�|| f� qn|| } t| �d k�r&td d �t| �fd d �d�� d ��n tdd� ��� D �dd � d�}� fdd�|D �} g } i } dd� | D �}| jdd� D ]\}t|dd�}|dk �r\|D ]:} |� | j�}|dk�rz| �| � | || j< || | j< �qz�q\dd� | | D �}t| j|�}|�r�dd� | D �} dd� | D �} || | �}d}d d� |D �D ]D} |dk�r@| jt k�r@td | f ��|dk�r| jt k �rd}�qt|| | f�S ) z� Transform all `_CountingAttr`s on a class into `Attribute`s. If *these* is passed, use that and don't look for them on the class. Return an `_Attributes`. Nc S s g | ]\}}||f�qS r r )�.0�name�car r r � <listcomp>@ s z$_transform_attrs.<locals>.<listcomp>)�keyTc S s h | ]\}}t |t�r|�qS r �� isinstancer9 �r_ r` �attrr r r � <setcomp>E s �z#_transform_attrs.<locals>.<setcomp>)r( r z1The following `attr.ib`s lack a type annotation: �, c s � � | �jS r )�getr[ )�n)�cdr r �<lambda>] � z"_transform_attrs.<locals>.<lambda>�.c s s$ | ] \}}t |t�r||fV qd S r rd rf r r r � <genexpr>c s �z#_transform_attrs.<locals>.<genexpr>c S s | d j S �Nr rZ r\ r r r rm h rn c s& g | ] \}}t j||� �|�d ��qS ))r` ra r0 )� Attribute�from_counting_attrrj )r_ r= ra )rW r r rb k s � �c S s i | ] }|j |�qS r �r` �r_ �ar r r � <dictcomp>t s z$_transform_attrs.<locals>.<dictcomp>r ����__attrs_attrs__c S s g | ] }|j �qS r rt ru r r r rb � s c S s g | ]}|j d d��qS �T)r1 ��_assocru r r r rb � s c S s g | ]}|j d d��qS rz r{ ru r r r rb � s Fc s s& | ] }|j d k r|jd kr|V qdS )FN)r- r1 ru r r r rp � s znNo mandatory attributes allowed after an attribute with a default value or factory. Attribute in question: %r) �__dict__rY r re r �sortr^ �items�setrS �addrj r r9 r; rC �lenr rH �sortedrV rU r` rL r" r( r6 rM )r �these� auto_attribsr1 Zca_listZca_namesZ annot_namesr= r0 rv Z unannotatedZ own_attrsrO � base_attr_mapZtaken_attr_namesrX Z sub_attrsZprev_arI Z AttrsClassrN Z had_defaultr )rW rl r �_transform_attrs4 s� � ������ � ��r� c C s t � �dS )z4 Attached to frozen classes as __setattr__. N�r �r r` �valuer r r �_frozen_setattrs� s r� c C s t � �dS )z4 Attached to frozen classes as __delattr__. Nr� )r r` r r r �_frozen_delattrs� s r� c @ s| e Zd ZdZdZdd� Zdd� Zdd� Zd d � Zd d � Z d d� Z dd� Z dd� Z dd� Z dd� Zdd� Zdd� Zdd � Zd S ) � _ClassBuilderz( Iteratively build *one* class. ) �_cls� _cls_dict�_attrs� _base_names� _attr_names�_slots�_frozen� _weakref_slot� _cache_hash�_has_post_init�_delete_attribs�_base_attr_map�_is_excc C s� t ||||�\} } } || _|r(t|j�ni | _| | _tdd� | D ��| _| | _t dd� | D ��| _ || _ |prt |�| _ || _|| _tt|dd��| _t|� | _| | _| j| jd< |r�t| jd< t| jd< d S ) Nc s s | ] }|j V qd S r rt ru r r r rp � s z)_ClassBuilder.__init__.<locals>.<genexpr>c s s | ] }|j V qd S r rt ru r r r rp � s �__attrs_post_init__Fry � __setattr__� __delattr__)r� r� �dictr} r� r� r� r� r� �tupler� r� �_has_frozen_base_classr� r� r� �boolrU r� r� r� r� r� ) r r r� �slots�frozen� weakref_slotr� r1 � cache_hash�is_excrN rO Zbase_mapr r r �__init__� s. � z_ClassBuilder.__init__c C s dj | jjd�S )Nz<_ClassBuilder(cls={cls})>r )rA r� r" r r r r r! � s z_ClassBuilder.__repr__c C s | j dkr| �� S | �� S dS )z� Finalize class based on the accumulated configuration. 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TN)r� �_create_slots_class�_patch_original_classr r r r � build_class� s z_ClassBuilder.build_classc C s� | j }| j}| jrZ| jD ]@}||krt||t�tk rzt||� W q tk rV Y qX q| j� � D ]\}}t |||� qd| j r�t|dd�}|r�t d��dd� }t |d|� |S )zA Apply accumulated methods and return the class. � __setstate__Nz�Currently you cannot use hash caching if you specify your own __setstate__ method.See https://github.com/python-attrs/attrs/issues/494 .c S s t | td � d S r )�setattr�_hash_cache_field)Z chss_self�_r r r �cache_hash_set_state s zA_ClassBuilder._patch_original_class.<locals>.cache_hash_set_state) r� r� r� r� rU � _sentinel�delattr�AttributeErrorr� r r� r� �NotImplementedError)r r � base_namesr` r� Zexisting_set_state_methodr� r r r r� � s. �� � z#_ClassBuilder._patch_original_classc s� �j � �fdd�t�j�D �}d}�jjdd� D ] }dt|dd�kr2d } qPq2�j}�jr�dt�jd d�kr�d|kr�|s�|d 7 }� fd d �|D �}�jr�|� t � t |�|d < t�jdd�}|dk r�||d< t dd� �jD ����fdd�}�j���fdd�}||d< ||d< t �j��jj �jj|�} | j�� D ]`} t| ttf��rZt| jdd�} n t| dd�} | �sp�q6| D ] } | j�jk�rtt| | � �qt�q6| S )zL Build and return a new class with a `__slots__` attribute. c s( i | ] \}}|t � j�d kr||�qS ))r} � __weakref__)r� r� )r_ �k�vr r r rw ) s � z5_ClassBuilder._create_slots_class.<locals>.<dictcomp>Fr rx r� r} r T� __slots__)r� c s g | ]}|� kr|�qS r r �r_ r` )r� r r rb B s z5_ClassBuilder._create_slots_class.<locals>.<listcomp>r$ Nc s s | ]}|d kr|V qdS )r� Nr )r_ Zanr r r rp L s z4_ClassBuilder._create_slots_class.<locals>.<genexpr>c s t � fdd��D ��S )�9 Automatically created by attrs. c 3 s | ]}t � |�V qd S r �rU r� r r r rp T s zL_ClassBuilder._create_slots_class.<locals>.slots_getstate.<locals>.<genexpr>�r� r )�state_attr_namesr r �slots_getstateP s z9_ClassBuilder._create_slots_class.<locals>.slots_getstatec s< t �| t�}t�|�D ]\}}|||� q� r8|td� dS )r� N)� _obj_setattr�__get__rr �zipr� )r �stateZ _ClassBuilder__bound_setattrr` r� )�hash_caching_enabledr� r r �slots_setstateX s z9_ClassBuilder._create_slots_class.<locals>.slots_setstate� __getstate__r� � __closure__)r� r r� r� rV rU r� r� r� rC r� r� r0 r" � __bases__r} �valuesre � classmethod� staticmethod�__func__� cell_contentsr ) r rl Zweakref_inheritedrX �namesZ slot_names�qualnamer� r� r �itemZ closure_cellsZcellr )r� r� r r� r r� $ sZ ����� � z!_ClassBuilder._create_slots_classc C s | � t| j|d��| jd< | S )N)�nsr! )�_add_method_dunders� _make_reprr� r� )r r� r r r �add_repr� s � z_ClassBuilder.add_reprc C s8 | j �d�}|d kr td��dd� }| �|�| j d< | S )Nr! z3__str__ can only be generated if a __repr__ exists.c S s | � � S r )r! r r r r �__str__� s z&_ClassBuilder.add_str.<locals>.__str__r� )r� rj r6 r� )r r* r� r r r �add_str� s �z_ClassBuilder.add_strc C s d | j d< | S )N�__hash__)r� r r r r �make_unhashable� s z _ClassBuilder.make_unhashablec C s( | � t| j| j| j| jd��| jd< | S )N�r� r� r� )r� � _make_hashr� r� r� r� r� r r r r �add_hash� s �� z_ClassBuilder.add_hashc C s6 | � t| j| j| j| j| j| j| j| j ��| j d< | S )Nr� ) r� � _make_initr� r� r� r� r� r� r� r� r� r r r r �add_init� s �� z_ClassBuilder.add_initc s2 � j }� fdd�t� j� j�D �\|d< |d< � S )Nc 3 s | ]}� � |�V qd S r �r� �r_ �methr r r rp � s �z'_ClassBuilder.add_eq.<locals>.<genexpr>�__eq__�__ne__)r� �_make_eqr� r� �r rl r r r �add_eq� s �z_ClassBuilder.add_eqc s> � j }� fdd�t� j� j�D �\|d< |d< |d< |d< � S )Nc 3 s | ]}� � |�V qd S r r� r� r r r rp � s �z*_ClassBuilder.add_order.<locals>.<genexpr>�__lt__�__le__�__gt__�__ge__)r� � _make_orderr� r� r� r r r � add_order� s � z_ClassBuilder.add_orderc C sX z| j j|_W n tk r" Y nX zd�| j j|jf�|_W n tk rR Y nX |S )zL Add __module__ and __qualname__ to a *method* if possible. ro )r� r# r� rH r$ r" )r �methodr r r r� � s � z!_ClassBuilder._add_method_dundersN)r" r# r$ r% r� r� r! r� r� r� r� r� r� r� r� r� r� r� r r r r r� � s $ 0` r� zrThe usage of `cmp` is deprecated and will be removed on or after 2021-06-01. Please use `eq` and `order` instead.c C s| | dk r$t |dk |dk f�r$td��| dk rDtjttdd� | | fS |dkrPd}|dkr\|}|dkrt|dkrttd��||fS )zp Validate the combination of *cmp*, *eq*, and *order*. Derive the effective values of eq and order. Nz&Don't mix `cmp` with `eq' and `order`.� �� stacklevelTFz-`order` can only be True if `eq` is True too.)�anyr6 �warnings�warn�_CMP_DEPRECATION�DeprecationWarning)r+ r2 r3 r r r r4 � s r4 c sP t |���\��� ��������� � � � � �fdd�}| dkrD|S || �S dS )a� A class decorator that adds `dunder <https://wiki.python.org/moin/DunderAlias>`_\ -methods according to the specified attributes using `attr.ib` or the *these* argument. :param these: A dictionary of name to `attr.ib` mappings. This is useful to avoid the definition of your attributes within the class body because you can't (e.g. if you want to add ``__repr__`` methods to Django models) or don't want to. If *these* is not ``None``, ``attrs`` will *not* search the class body for attributes and will *not* remove any attributes from it. If *these* is an ordered dict (`dict` on Python 3.6+, `collections.OrderedDict` otherwise), the order is deduced from the order of the attributes inside *these*. Otherwise the order of the definition of the attributes is used. :type these: `dict` of `str` to `attr.ib` :param str repr_ns: When using nested classes, there's no way in Python 2 to automatically detect that. Therefore it's possible to set the namespace explicitly for a more meaningful ``repr`` output. :param bool repr: Create a ``__repr__`` method with a human readable representation of ``attrs`` attributes.. :param bool str: Create a ``__str__`` method that is identical to ``__repr__``. This is usually not necessary except for `Exception`\ s. :param bool eq: If ``True`` or ``None`` (default), add ``__eq__`` and ``__ne__`` methods that check two instances for equality. They compare the instances as if they were tuples of their ``attrs`` attributes, but only iff the types of both classes are *identical*! :type eq: `bool` or `None` :param bool order: If ``True``, add ``__lt__``, ``__le__``, ``__gt__``, and ``__ge__`` methods that behave like *eq* above and allow instances to be ordered. If ``None`` (default) mirror value of *eq*. :type order: `bool` or `None` :param cmp: Setting to ``True`` is equivalent to setting ``eq=True, order=True``. Deprecated in favor of *eq* and *order*, has precedence over them for backward-compatibility though. Must not be mixed with *eq* or *order*. :type cmp: `bool` or `None` :param hash: If ``None`` (default), the ``__hash__`` method is generated according how *eq* and *frozen* are set. 1. If *both* are True, ``attrs`` will generate a ``__hash__`` for you. 2. If *eq* is True and *frozen* is False, ``__hash__`` will be set to None, marking it unhashable (which it is). 3. If *eq* is False, ``__hash__`` will be left untouched meaning the ``__hash__`` method of the base class will be used (if base class is ``object``, this means it will fall back to id-based hashing.). Although not recommended, you can decide for yourself and force ``attrs`` to create one (e.g. if the class is immutable even though you didn't freeze it programmatically) by passing ``True`` or not. Both of these cases are rather special and should be used carefully. See our documentation on `hashing`, Python's documentation on `object.__hash__`, and the `GitHub issue that led to the default \ behavior <https://github.com/python-attrs/attrs/issues/136>`_ for more details. :type hash: ``bool`` or ``None`` :param bool init: Create a ``__init__`` method that initializes the ``attrs`` attributes. Leading underscores are stripped for the argument name. If a ``__attrs_post_init__`` method exists on the class, it will be called after the class is fully initialized. :param bool slots: Create a `slotted class <slotted classes>` that's more memory-efficient. :param bool frozen: Make instances immutable after initialization. If someone attempts to modify a frozen instance, `attr.exceptions.FrozenInstanceError` is raised. Please note: 1. This is achieved by installing a custom ``__setattr__`` method on your class, so you can't implement your own. 2. True immutability is impossible in Python. 3. This *does* have a minor a runtime performance `impact <how-frozen>` when initializing new instances. In other words: ``__init__`` is slightly slower with ``frozen=True``. 4. If a class is frozen, you cannot modify ``self`` in ``__attrs_post_init__`` or a self-written ``__init__``. You can circumvent that limitation by using ``object.__setattr__(self, "attribute_name", value)``. :param bool weakref_slot: Make instances weak-referenceable. This has no effect unless ``slots`` is also enabled. :param bool auto_attribs: If True, collect `PEP 526`_-annotated attributes (Python 3.6 and later only) from the class body. In this case, you **must** annotate every field. If ``attrs`` encounters a field that is set to an `attr.ib` but lacks a type annotation, an `attr.exceptions.UnannotatedAttributeError` is raised. Use ``field_name: typing.Any = attr.ib(...)`` if you don't want to set a type. If you assign a value to those attributes (e.g. ``x: int = 42``), that value becomes the default value like if it were passed using ``attr.ib(default=42)``. Passing an instance of `Factory` also works as expected. Attributes annotated as `typing.ClassVar`, and attributes that are neither annotated nor set to an `attr.ib` are **ignored**. .. _`PEP 526`: https://www.python.org/dev/peps/pep-0526/ :param bool kw_only: Make all attributes keyword-only (Python 3+) in the generated ``__init__`` (if ``init`` is ``False``, this parameter is ignored). :param bool cache_hash: Ensure that the object's hash code is computed only once and stored on the object. If this is set to ``True``, hashing must be either explicitly or implicitly enabled for this class. If the hash code is cached, avoid any reassignments of fields involved in hash code computation or mutations of the objects those fields point to after object creation. If such changes occur, the behavior of the object's hash code is undefined. :param bool auto_exc: If the class subclasses `BaseException` (which implicitly includes any subclass of any exception), the following happens to behave like a well-behaved Python exceptions class: - the values for *eq*, *order*, and *hash* are ignored and the instances compare and hash by the instance's ids (N.B. ``attrs`` will *not* remove existing implementations of ``__hash__`` or the equality methods. It just won't add own ones.), - all attributes that are either passed into ``__init__`` or have a default value are additionally available as a tuple in the ``args`` attribute, - the value of *str* is ignored leaving ``__str__`` to base classes. .. versionadded:: 16.0.0 *slots* .. versionadded:: 16.1.0 *frozen* .. versionadded:: 16.3.0 *str* .. versionadded:: 16.3.0 Support for ``__attrs_post_init__``. .. versionchanged:: 17.1.0 *hash* supports ``None`` as value which is also the default now. .. versionadded:: 17.3.0 *auto_attribs* .. versionchanged:: 18.1.0 If *these* is passed, no attributes are deleted from the class body. .. versionchanged:: 18.1.0 If *these* is ordered, the order is retained. .. versionadded:: 18.2.0 *weakref_slot* .. deprecated:: 18.2.0 ``__lt__``, ``__le__``, ``__gt__``, and ``__ge__`` now raise a `DeprecationWarning` if the classes compared are subclasses of each other. ``__eq`` and ``__ne__`` never tried to compared subclasses to each other. .. versionchanged:: 19.2.0 ``__lt__``, ``__le__``, ``__gt__``, and ``__ge__`` now do not consider subclasses comparable anymore. .. versionadded:: 18.2.0 *kw_only* .. versionadded:: 18.2.0 *cache_hash* .. versionadded:: 19.1.0 *auto_exc* .. deprecated:: 19.2.0 *cmp* Removal on or after 2021-06-01. .. versionadded:: 19.2.0 *eq* and *order* c sH t | dd �d krtd���dko(t| t�}t| � � ��� ��|� }� dkrT|�� � � dkrd|�� �dkrx|sx|�� �dkr�|s�|�� �dk r��dk r��d k r�td��np�dksʈd krƈdks�|r؈r�td��nF�dks��d k�r�dk�r�dk�r|� � n��rtd��|� � �dk�r2|� � n��r@td��|� � S )Nr z(attrs only works with new-style classes.TFr' zlInvalid value for cache_hash. 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To use hash caching, init must be True.) rU r5 � issubclass� BaseExceptionr� r� r� r� r� r� r� r� r� )r r� Zbuilder�r� �auto_excr� r2 r� r, r- r1 r3 r* �repr_nsr� rP r� r� r r �wrap� sZ � � �& � �zattrs.<locals>.wrapN)r4 )Z maybe_clsr� r� r* r+ r, r- r� r� r� rP r� r1 r� r� r2 r3 r� r r� r rN � s 2(Dc C s" t | jdd�tjko | jjtjkS )�b Check whether *cls* has a frozen ancestor by looking at its __setattr__. r# N)rU r� r� r# r" r r r r r� s � �r� c C s | j tkS )r� )r� r� r r r r r� s c s t � fdd�|D ��S )z: Create a tuple of all values of *obj*'s *attrs*. c 3 s | ]}t � |j�V qd S r )rU r` ru ��objr r rp s z"_attrs_to_tuple.<locals>.<genexpr>r� )r� rN r r� r �_attrs_to_tuple s r� c C sl t �� }d}d}d�|| jt| d| j�|�}ddt|�f|f}tj� ||�|krT|S |d7 }d�|�}qdS )zF Create a "filename" suitable for a function being generated. r? r z <attrs generated {0} {1}.{2}{3}>r$ Nz-{0}) �uuidZuuid4rA r# rU r" rP � linecache�cache� setdefault)r Z func_nameZ unique_idZextra�count�unique_filenameZ cache_liner r r �_generate_unique_filename" s" � ��r c s� t dd� � D ��� d}t| d�}t|��dg�� ��fdd�}|r���|dt � |r~|d t |d � ��|d d � n|d t |d � ��|d t � n |d|� d���}i }i } t||d�} t| || � t|�d |� d�|ft j |< | d S )Nc s s0 | ](}|j d ks$|j dkr|jd kr|V qdS )TN)r, r2 ru r r r rp A s z _make_hash.<locals>.<genexpr>z r, zdef __hash__(self):c sP �� || d |d�f g� � D ]}��|d|j � q$��|d � dS )z� Generate the code for actually computing the hash code. Below this will either be returned directly or used to compute a value which is then cached, depending on the value of cache_hash zhash((z %d,� self.%s,z ))N)�extendrC r` )�prefix�indentrv �rN Z method_linesZ type_hashr r � append_hash_computation_linesL s �z1_make_hash.<locals>.append_hash_computation_lineszif self.%s is None:z object.__setattr__(self, '%s', � �)z self.%s = zreturn self.%szreturn r> r@ Tr� ) r� r r, rC r� rH rG rF r� � splitlinesr� r ) r rN r� r� Ztabr r �scriptrK �locs�bytecoder r r r� @ sB � � � � r� c C s t | |ddd�| _| S )z% Add a hash method to *cls*. Fr� )r� r� �r rN r r r � _add_hash| s r c C s | � |�}|tkrtS | S )z^ Check equality and either forward a NotImplemented or return the result negated. )r� �NotImplemented)r �other�resultr r r r� � s r� c C s� dd� |D �}t | d�}dddg}|rt|�d� dg}|D ](}|�d |jf � |�d |jf � q:||d g 7 }n |�d � d �|�}i }i }t||d�} t| ||� t|�d |�d�|ftj |< |d t fS )Nc S s g | ]}|j r|�qS r )r2 ru r r r rb � s z _make_eq.<locals>.<listcomp>r2 zdef __eq__(self, other):z- if other.__class__ is not self.__class__:z return NotImplementedz return (z ) == (r z other.%s,z )z return Truer> r@ Tr� ) r rC r` rH rG rF r� r r� r r� ) r rN r �linesZothersrv r rK r r r r r r� � s2 � � r� c sV dd� � D �� � fdd���fdd�}�fdd�}�fd d �}�fd d �}||||fS ) Nc S s g | ]}|j r|�qS r )r3 ru r r r rb � s z _make_order.<locals>.<listcomp>c s t | � �S )z& Save us some typing. )r� r� �rN r r �attrs_to_tuple� s z#_make_order.<locals>.attrs_to_tuplec s |j | j kr � | �� |�k S tS ��1 Automatically created by attrs. �r r �r r �r r r r� � s z_make_order.<locals>.__lt__c s |j | j kr � | �� |�kS tS r r r r r r r� � s z_make_order.<locals>.__le__c s |j | j kr � | �� |�kS tS r r r r r r r� � s z_make_order.<locals>.__gt__c s |j | j kr � | �� |�kS tS r r r r r r r� � s z_make_order.<locals>.__ge__r )r rN r� r� r� r� r )rN r r r� � s r� c C s$ |dkr| j }t| |�\| _| _| S )z5 Add equality methods to *cls* with *attrs*. N)ry r� r� r� r r r r �_add_eq� s r c s$ t dd� | D ��� � �fdd�}|S )z^ Make a repr method that includes relevant *attrs*, adding *ns* to the full name. c s s2 | ]*}|j d k r|j|j dkr"t n|j fV qdS )FTN)r* r` ru r r r rp � s �z _make_repr.<locals>.<genexpr>c s z t j}W n tk r* t� }|t _Y nX t| �|kr<dS | j}�dkrxt|dd�}|dk rp|�dd�d }q�|j}n�d |j }|� t| �� z\|dg}d }� D ]8\}}|r�d }n |� d � |� |d |t| |t ��f� q�d �|�d W �S |� t| �� X dS )r z...Nr$ z>.r rx ro �(TFri �=r? r )�_already_repring� working_setr� r� �idr rU �rsplitr" r� �removerC r r rH ) r r" Zreal_clsr� � class_namer �firstr` Z attr_repr�Zattr_names_with_reprsr� r r r! s6 �z _make_repr.<locals>.__repr__r� )rN r� r! r r( r r� � s �*r� c C s |dkr| j }t||�| _| S )z% Add a repr method to *cls*. N)ry r� r! )r r� rN r r r � _add_repr1 s r) c C s� dd� |D �}t | d�}t|||||||�\} } } i } t| |d�} tdd� |D ��}| �t|d�� |dkrtt| d < t| | | � t| �d | � d�|ft j |< | d }| |_ |S ) Nc S s g | ]}|j s|jtk r|�qS r )r- r( r ru r r r rb ? s z _make_init.<locals>.<listcomp>r- r@ c s s | ]}|j |fV qd S r rt ru r r r rp H s z _make_init.<locals>.<genexpr>)r � attr_dictTZ_cached_setattrr� ) r �_attrs_to_init_scriptrG r� �updater r� rF r� r r� r rT )r rN � post_initr� r� r� r� r� r r rK � annotationsr r r* r� r r r r� < s4 � � r� c C s8 t | �std��t| dd�}|dkr4tdj| d���|S )a� Return the tuple of ``attrs`` attributes for a class. The tuple also allows accessing the fields by their names (see below for examples). :param type cls: Class to introspect. :raise TypeError: If *cls* is not a class. :raise attr.exceptions.NotAnAttrsClassError: If *cls* is not an ``attrs`` class. :rtype: tuple (with name accessors) of `attr.Attribute` .. versionchanged:: 16.2.0 Returned tuple allows accessing the fields by name. � Passed object must be a class.ry N�({cls!r} is not an attrs-decorated class.r )r r5 rU r rA r r r r �fieldsa s �r1 c C sF t | �std��t| dd�}|dkr4tdj| d���tdd� |D ��S )a8 Return an ordered dictionary of ``attrs`` attributes for a class, whose keys are the attribute names. :param type cls: Class to introspect. :raise TypeError: If *cls* is not a class. :raise attr.exceptions.NotAnAttrsClassError: If *cls* is not an ``attrs`` class. :rtype: an ordered dict where keys are attribute names and values are `attr.Attribute`\ s. This will be a `dict` if it's naturally ordered like on Python 3.6+ or an :class:`~collections.OrderedDict` otherwise. .. versionadded:: 18.1.0 r/ ry Nr0 r c s s | ]}|j |fV qd S r rt ru r r r rp � s z fields_dict.<locals>.<genexpr>)r r5 rU r rA r r r r r � fields_dict} s �r2 c C sD t jdkrdS t| j�D ]&}|j}|dk r|| |t| |j�� qdS )z� Validate all attributes on *inst* that have a validator. Leaves all exceptions through. :param inst: Instance of a class with ``attrs`` attributes. FN)r Z_run_validatorsr1 r r) rU r` )�instrv r� r r r �validate� s r4 c C s d| j kS )Nr� )r} r r r r � _is_slot_cls� s r5 c C s | |kot || �S )z> Check if the attribute name comes from a slot class. )r5 )Za_namer� r r r � _is_slot_attr� s r6 c s� g }t � fdd�| D ��}|dkrx|dkrF|�d� dd� } dd� } q�|�d � |r^|�d� � fd d�} � fd d�} nd d� } d d� } g } g } g } i }ddi}| D �] }|jr�| �|� |j}|j�d�}t|jt�}|r�|jjr�d}nd}|j dk�r�|�rrt � |j�}|j dk �rJ|�| ||d� |� �� t � |j�}|j ||< n|�| ||d� |� �� |jj||< nT|j dk �r�|�| |dj |d��� t � |j�}|j ||< n|�| |dj |d��� �n�|jtk �rL|�sLdj ||d�}|j�r�| �|� n | �|� |j dk �r8|�| ||�� |j |t � |j�< n|�| ||�� �nR|�r@dj |d�}|j�rr| �|� n | �|� |�dj |d�� t � |j�}|j dk �r�|�d | ||� � |�d � |�d | ||d� |� � � |j |t � |j�< n<|�d | ||� � |�d � |�d | ||d� |� � � |jj||< n^|j�rT| �|� n | �|� |j dk �r�|�| ||�� |j |t � |j�< n|�| ||�� |j dkr�|j dkr�|jdk r�|j||< q�| �r,t|d < |�d � | D ]F}d � |j�}d!� |j�}|�d"� |||j�� |j||< |||< �q�|�r<|�d#� |�rp|�rZ|�rTd$}nd%}nd&}|�|td'f � |�r�d(�d)d� | D ��}|�d*|f � d+�| �} | �r�t�r�td,��| d-j | �r�d+ndd+�| �d.�7 } d/j | |�r�d0�|�nd1d2�||fS )3z� Return a script of an initializer for *attrs* and a dict of globals. The globals are expected by the generated script. If *frozen* is True, we cannot set the attributes directly so we use a cached ``object.__setattr__``. c 3 s | ]}t |j� �V qd S r )r6 r` ru �r� r r rp � s z(_attrs_to_init_script.<locals>.<genexpr>Tz8_setattr = _cached_setattr.__get__(self, self.__class__)c S s d| |d� S )N�(_setattr('%(attr_name)s', %(value_var)s)�r= � value_varr r9 r r r � fmt_setter� s �z)_attrs_to_init_script.<locals>.fmt_setterc S s t �| �}d| ||d� S )Nz2_setattr('%(attr_name)s', %(conv)s(%(value_var)s))�r= r: Zconv��_init_converter_patrA �r= r: � conv_namer r r �fmt_setter_with_converter� s �z8_attrs_to_init_script.<locals>.fmt_setter_with_converterz_inst_dict = self.__dict__c s, t | � �rd| |d� }nd| |d� }|S )Nr8 r9 z+_inst_dict['%(attr_name)s'] = %(value_var)s)r6 )r= r: �resr7 r r r; � s � �c s. t �| �}t| � �rd}nd}|| ||d� S )Nz/_setattr('%(attr_name)s', %(c)s(%(value_var)s))z2_inst_dict['%(attr_name)s'] = %(c)s(%(value_var)s))r= r: �c)r> rA r6 )r= r: r@ Ztmplr7 r r rA � s �c S s d| |d� S )Nz self.%(attr_name)s = %(value)s�r= r� r rD r r r r; s �c S s t �| �}d| ||d� S )Nz,self.%(attr_name)s = %(conv)s(%(value_var)s)r< r= r? r r r rA s ��returnNr� r r? Fz({0})z attr_dict['{attr_name}'].default)r= z+{arg_name}=attr_dict['{attr_name}'].default)�arg_namer= z{arg_name}=NOTHING)rF z if {arg_name} is not NOTHING:z zelse:r z#if _config._run_validators is True:z__attr_validator_{}z __attr_{}z {}(self, {}, self.{})zself.__attrs_post_init__()z_setattr('%s', %s)z_inst_dict['%s'] = %sz self.%s = %s�None�,c s s | ]}|j rd |j V qdS )zself.N)r- r` ru r r r rp � s z BaseException.__init__(self, %s)ri z7Keyword-only arguments only work on Python 3 and later.z {leading_comma}*, {kw_only_args})Z leading_comma� kw_only_argsz(def __init__(self, {args}): {lines} z �pass)�argsr )r� rC r) r` �lstripre r( r8 � takes_selfr- �_init_factory_patrA r. r> r: r r1 r0 r r� rH r r )rN r� r� r- r� r� r� r Zany_slot_ancestorsr; rA rK rI Zattrs_to_validateZnames_for_globalsr. rv r= rF Z has_factoryZ maybe_selfZinit_factory_namer@ �argZval_nameZinit_hash_cache�valsr r7 r r+ � s` �� � �� �� ��� ��� � � � � � ��� � � ��� � � � � � ��r+ c @ s` e Zd ZdZdZddd�Zdd� Zedd d ��Ze d d � �Z d d� Z dd� Z dd� Z dd� ZdS )rr a *Read-only* representation of an attribute. :attribute name: The name of the attribute. Plus *all* arguments of `attr.ib` (except for ``factory`` which is only syntactic sugar for ``default=Factory(...)``. For the version history of the fields, see `attr.ib`. ) r` r( r) r* r2 r3 r, r- r/ r0 r. r1 NFc C s� t || | �\} } t�| t�}|d|� |d|� |d|� |d|� |d| � |d| � |d|� |d|� |d | � |d |r�t|�nt� |d | � |d | � d S ) Nr` r( r) r* r2 r3 r, r- r. r/ r0 r1 )r4 r� r� rr r �_empty_metadata_singleton)r r` r( r) r* r+ r, r- r/ r0 r. r1 r2 r3 � bound_setattrr r r r� � s& � � zAttribute.__init__c C s t � �d S r r� r� r r r r� s zAttribute.__setattr__c sT |d kr� j }n� j d k r"td��� fdd�tjD �}| f |� j� j|d d�|��S )Nz8Type annotation and type argument cannot both be presentc s i | ]}|d kr|t � |��qS ))r` r) r( r0 r� )r_ r� �ra r r rw s �� z0Attribute.from_counting_attr.<locals>.<dictcomp>)r` r) r( r0 r+ )r0 r6 rr r� � _validator�_default)r r` ra r0 Z inst_dictr rS r rs s$ � � ��z Attribute.from_counting_attrc C s t jttdd� | jo| jS )zD Simulate the presence of a cmp attribute and warn. r r� )r� r� r� r� r2 r3 r r r r r+ 3 s z Attribute.cmpc K s t � | �}|�|�� � |S )z2 Copy *self* and apply *changes*. )�copy� _setattrsr )r Zchanges�newr r r r| = s zAttribute._assocc s t � fdd�� jD ��S )�( Play nice with pickle. c 3 s* | ]"}|d krt � |�nt� j�V qdS )r/ N)rU r� r/ r� r r r rp L s �z)Attribute.__getstate__.<locals>.<genexpr>)r� r� r r r r r� H s �zAttribute.__getstate__c C s | � t| j|�� dS )rY N)rW r� r� )r r� r r r r� Q s zAttribute.__setstate__c C sH t �| t�}|D ]2\}}|dkr,|||� q|||r<t|�nt� qd S )Nr/ )r� r� rr r rQ )r Zname_values_pairsrR r` r� r r r rW W s � �zAttribute._setattrs)NNNFNN)N)r" r# r$ r% r� r� r� r� rs rE r+ r| r� r� rW r r r r rr � s$ � + rr c C s* g | ]"}t |td dd dd|dkdd� �qS )NTFr/ ) r` r( r) r* r+ r2 r3 r, r- �rr r r� r r r rb e s ��rb r c C s g | ]}|j r|�qS r )r, ru r r r rb v s c @ s` e Zd ZdZdZedd� dD ��edddddd dd dd d � f Zd Zd d � Z dd� Z dd� Z dS )r9 a Intermediate representation of attributes that uses a counter to preserve the order in which the attributes have been defined. *Internal* data structure of the attrs library. Running into is most likely the result of a bug like a forgotten `@attr.s` decorator. ) r[ rU r* r2 r3 r, r- r/ rT r. r0 r1 c c s* | ]"}t |td dd dddddd� V qd S )NTF� r` r( r) r* r+ r, r- r1 r2 r3 rZ r� r r r rp � s ��z_CountingAttr.<genexpr>)r[ rU r* r2 r3 r, r- r/ NTFr[ r c C sz t jd7 _t j| _|| _|r:t|ttf�r:t|� | _n|| _|| _ | | _ | | _ || _ || _ || _|| _| | _| | _d S rq )r9 � cls_counterr[ rU re �listr� �and_rT r* r2 r3 r, r- r. r/ r0 r1 ) r r( r) r* r+ r, r- r. r/ r0 r1 r2 r3 r r r r� � s z_CountingAttr.__init__c C s$ | j dkr|| _ nt| j |�| _ |S )z� Decorator that adds *meth* to the list of validators. Returns *meth* unchanged. .. versionadded:: 17.1.0 N)rT r^ �r r� r r r r) � s z_CountingAttr.validatorc C s" | j tk rt� �t|dd�| _ |S )z� Decorator that allows to set the default for an attribute. Returns *meth* unchanged. :raises DefaultAlreadySetError: If default has been set before. .. versionadded:: 17.1.0 T)rM )rU r r r8 r_ r r r r( � s z_CountingAttr.default) r" r# r$ r% r� r� rr ry r\ r� r) r( r r r r r9 z s. ����$!r9 )r� r- r, c @ s& e Zd ZdZe� Ze� Zddd�ZdS )r8 a� Stores a factory callable. If passed as the default value to `attr.ib`, the factory is used to generate a new value. :param callable factory: A callable that takes either none or exactly one mandatory positional argument depending on *takes_self*. :param bool takes_self: Pass the partially initialized instance that is being initialized as a positional argument. .. versionadded:: 17.1.0 *takes_self* Fc C s || _ || _dS )z� `Factory` is part of the default machinery so if we want a default value here, we have to implement it ourselves. N)r: rM )r r: rM r r r r� s zFactory.__init__N)F)r" r# r$ r% r; r: rM r� r r r r r8 � s r8 c K s� t |t�r|}n*t |ttf�r2tdd� |D ��}ntd��|�dd�}t| ||dkrXi nd|i�}zt�d�j � dd�|_ W n t t fk r� Y nX |�d d�}t||� d �|� d ��\|d < |d < tf d |i|��|�S ) aR A quick way to create a new class called *name* with *attrs*. :param name: The name for the new class. :type name: str :param attrs: A list of names or a dictionary of mappings of names to attributes. If *attrs* is a list or an ordered dict (`dict` on Python 3.6+, `collections.OrderedDict` otherwise), the order is deduced from the order of the names or attributes inside *attrs*. Otherwise the order of the definition of the attributes is used. :type attrs: `list` or `dict` :param tuple bases: Classes that the new class will subclass. :param attributes_arguments: Passed unmodified to `attr.s`. :return: A new class with *attrs*. :rtype: type .. versionadded:: 17.1.0 *bases* .. versionchanged:: 18.1.0 If *attrs* is ordered, the order is retained. c s s | ]}|t � fV qd S r )r; ru r r r rp 4 s z make_class.<locals>.<genexpr>z(attrs argument must be a dict or a list.r� Nr r" �__main__r+ r2 r3 r� )re r� r] r� r5 �popr0 �sys� _getframe� f_globalsrj r# r� r6 r4 r� )r` rN �basesZattributes_argumentsZcls_dictr- Ztype_r+ r r r � make_class s8 � � �� �rf )r� r, c @ s e Zd ZdZe� Zdd� ZdS )� _AndValidatorz2 Compose many validators to a single one. c C s | j D ]}||||� qd S r )� _validators)r r3 rg r� r� r r r �__call__` s z_AndValidator.__call__N)r" r# r$ r% r; rh ri r r r r rg X s rg c G s6 g }| D ] }|� t|t�r |jn|g� qtt|��S )z� A validator that composes multiple validators into one. When called on a value, it runs all wrapped validators. :param validators: Arbitrary number of validators. :type validators: callables .. versionadded:: 17.1.0 )r re rg rh r� )Z validatorsrP r) r r r r^ e s ��r^ )NNNTNNTFFTFFFFFNN)N)NN)QZ __future__r r r rV r� rb Z threadingr� r� �operatorr r? r Z_compatr r r r r r � exceptionsr r r r r �objectr� r� r> rN rD rR r� rQ r� r r r; rL rM rS rY r^ r� r� r� r� r� r4 rN r� r� r� r r� r r� r� r� r Zlocalr! r� r) r� r1 r2 r4 r5 r6 r+ rr r� Z_ar9 r8 rf rg r^ r r r r �<module> s� �� �� k 4� � ~ < '0 ; % � �~ A