Edit File: dataclasses.cpython-37.pyc
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If init is True, the field will be a parameter to the class's __init__() function. If repr is True, the field will be included in the object's repr(). If hash is True, the field will be included in the object's hash(). If compare is True, the field will be used in comparison functions. metadata, if specified, must be a mapping which is stored but not otherwise examined by dataclass. It is an error to specify both default and default_factory. z/cannot specify both default and default_factory)r � ValueErrorr )r! r" r% r# r$ r& r' r r r r 5 s c s( |sdS dd� � fdd�|D ��� d�S )Nz()�(�,c s g | ]}� � d |j � ��qS )�.)r )�.0�f)�obj_namer r � <listcomp>T s z _tuple_str.<locals>.<listcomp>z,))�join)r= r r )r= r � _tuple_strK s r@ c s" t � � t���� �fdd��}|S )Nc sD t | �t�� f}|� kr dS � �|� z �| �}W d � �|� X |S )Nz...)�id�_thread� get_ident�add�discard)r �key�result)� repr_running� user_functionr r �wrapper^ s z _recursive_repr.<locals>.wrapper)�set� functools�wraps)rI rJ r )rH rI r �_recursive_reprY s rN )�globals�locals� return_typec C s� |d kr i }d|kr t |d< d}|tk r4||d< d}d�|�}d�dd� |D ��}d | � d |� d |� d |� �}d �|�� �}d|� d|� d| � �}i } t||| � | d f |�S )NZBUILTINS� Z _return_typez->_return_typer9 � c s s | ]}d |� �V qdS )z Nr )r; �br r r � <genexpr>z s z _create_fn.<locals>.<genexpr>z def r8 r, z: z, zdef __create_fn__(z): z return Z __create_fn__)�builtinsr r? �keys�exec) r �argsZbodyrO rP rQ Zreturn_annotationZtxtZ local_vars�nsr r r � _create_fnl s r[ c C s0 | r d|� d|�d|� d�S |� d|� d|� �S )Nz BUILTINS.object.__setattr__(r9 r, r: �=r )r6 r �value� self_namer r r � _field_assign� s r_ c C s� d| j � �}| jtk rV| jr@| j||< |� d| j � d| j � �}q�| j||< |� d�}n8| jr�| jtkrn| j }q�| jtk r�| j||< | j }nd S | jtkr�d S t|| j ||�S )NZ_dflt_z() if z is _HAS_DEFAULT_FACTORY else z())r r" r r% r! r( r r_ )r< r6 rO r^ Z default_namer] r r r � _field_init� s" r` c C sV | j tkr| jtkrd}n&| j tk r2d| j� �}n| jtk r@d}| j� d| j� |� �S )NrR z=_dflt_z=_HAS_DEFAULT_FACTORYz:_type_)r! r r" r )r< r! r r r � _init_param� s ra c C s� d}xB| D ]:}|j r |jtkr(|jtks.d}q |r td|j�d���q W dd� | D �}|�ttd�� g }x(| D ] }t||||�} | rp|� | � qpW |r�d� d d � | D ��} |� |� d t � d | � d �� |s�dg}t d|gdd� | D � |||d d�S )NFTznon-default argument z follows default argumentc S s i | ]}|j d |j� ��qS )Z_type_)r r )r; r< r r r � <dictcomp>� s z _init_fn.<locals>.<dictcomp>)r �_HAS_DEFAULT_FACTORYr9 c s s | ]}|j tkr|jV qd S )N)r( r r )r; r< r r r rU � s z_init_fn.<locals>.<genexpr>r: r8 r, �passr c S s g | ]}|j rt|��qS r )r% ra )r; r< r r r r> s z _init_fn.<locals>.<listcomp>)rP rO rQ ) r% r! r r" � TypeErrorr �updaterc r` �appendr? �_POST_INIT_NAMEr[ ) r r6 � has_post_initr^ rO Z seen_defaultr< rP Z body_lines�lineZ params_strr r r �_init_fn� s6 rk c C s2 t dddd�dd� | D �� d g|d�}t|�S ) Nr )r z(return self.__class__.__qualname__ + f"(z, c S s g | ]}|j � d |j � d��qS )z={self.z!r})r )r; r< r r r r> s z _repr_fn.<locals>.<listcomp>z)")rO )r[ r? rN )r rO �fnr r r �_repr_fn s rm c C sp | t d�}|r,dd�dd� |D �� d }nd}tdd d |� d �d d f||d�tddd |� d �ddf||d�fS )N)�clsr r8 r9 c s s | ]}t |j�V qd S )N)r# r )r; r< r r r rU s z'_frozen_get_del_attr.<locals>.<genexpr>z,)z()� __setattr__)r r r] z if type(self) is cls or name in �:z> raise FrozenInstanceError(f"cannot assign to field {name!r}")z)super(cls, self).__setattr__(name, value))rP rO � __delattr__)r r z; raise FrozenInstanceError(f"cannot delete field {name!r}")z"super(cls, self).__delattr__(name))r r? r[ )rn r rO rP Z fields_strr r r �_frozen_get_del_attr s& rr c C s$ t | ddd|� |� |� �dg|d�S )N)r �otherz%if other.__class__ is self.__class__:z return zreturn NotImplemented)rO )r[ )r �op� self_tuple� other_tuplerO r r r �_cmp_fn2 s rw c C s$ t d| �}tddd|� d�g|d�S )Nr �__hash__)r z return hash(r, )rO )r@ r[ )r rO ru r r r �_hash_fn@ s ry c C s$ | |j kp"t| �|jko"| j|j kS )N)�ClassVarr Z _GenericAliasZ __origin__)�a_type�typingr r r � _is_classvarH s r} c C s | |j kS )N)r )r{ � dataclassesr r r � _is_initvarP s r c C s� t �| �}|r�d }|�d�}|s2tj�|j�j}n2tj�|j�}|rd|j�|�|krdtj�|j�j}|r�||�|�d��|�r�dS dS )N� � TF)�_MODULE_IDENTIFIER_RE�match�group�sys�modules�getr �__dict__) Z annotationrn Za_moduler{ Zis_type_predicater� rZ Z module_name�moduler r r �_is_typeV s ) r� c C s8 t | |t�}t|t�r |}nt|tj�r,t}t|d�}||_||_t |_ t j � d�}|r�t||�s�t|jt�r�t|j| ||jt�r�t|_ |j t kr�t j t }t||�s�t|jt�r�t|j| ||jt�r�t|_ |j ttfkr�|jtk r�td|j� d���|j t k�r4t|jttt f��r4t dt|j�� d|j� d���|S )N)r! r| zfield z cannot have a default factoryzmutable default z for field z$ is not allowed: use default_factory) r. r � isinstancer r* �MemberDescriptorTyper r r r r( r� r� r� r} �strr� rz r r r r r r" re r! �list�dictrK r7 )rn Za_namer{ r! r< r| r~ r r r � _get_field� s: r� c C s || j krdS t| ||� dS )NTF)r� �setattr)rn r r] r r r �_set_new_attribute� s r� c C s d S )Nr )rn r rO r r r �_hash_set_none� s r� c C s dd� |D �}t ||�S )Nc S s( g | ] }|j d kr|jrn|j r|�qS )N)r$ r& )r; r< r r r r> � s z _hash_add.<locals>.<listcomp>)ry )rn r rO �fldsr r r � _hash_add� s r� c C s t d| j� ���d S )Nz-Cannot overwrite attribute __hash__ in class )re r )rn r rO r r r �_hash_exception� s r� ))FFFF)FFFT)FFTF)FFTT)FTFF)FTFT)FTTF)FTTT)TFFF)TFFT)TFTF)TFTT)TTFF)TTFT)TTTF)TTTTc s� i }� j tjkr tj� j j}ni }t� tt||||||�� d} d} xX� jddd� D ]D} t| t d �} | rXd} x| � � D ]} | || j < qzW t| t�j rXd} qXW � j� di �}� fdd�|�� D �}xT|D ]L} | || j < tt� | j d �t�r�| jtk�rt� | j � q�t� | j | j� q�W x<� j�� D ].\}}t|t��r&||k�r&t|�d����q&W | �r�| �rr|�srtd ��| �s�|�r�td ��t� t |� � j� d t�}|tk�p�|d k�o�d � jk }|�r�|�s�td ��|�r t� t�}dd� |� � D �}t� dt|||d|k�rdnd|�� dd� |� � D �}|�rTdd� |D �}t� dt||�� |�r�dd� |D �}td|�}td|�}t� d t d d|||d�� |�rdd� |D �}td|�}td|�}xFdD ]>\}}t� |t |||||d���r�td|� d � j � d ����q�W |�rLx>t � ||�D ].}t� |j |��rtd|j � d � j � ����qW t t |�t |�t |�|f }|�r||� ||�� _!t� d ��s�� j t"t#�$� ���%d d � � _&� S )!NF���r T�__annotations__c s g | ]\}}t � ||��qS r )r� )r; r r )rn r r r> Q s z"_process_class.<locals>.<listcomp>z& is a field but has no type annotationz5cannot inherit non-frozen dataclass from a frozen onez5cannot inherit frozen dataclass from a non-frozen onerx �__eq__z eq must be true if order is truec S s g | ]}|j ttfkr|�qS r )r( r r )r; r< r r r r> � s r r Z__dataclass_self__c S s g | ]}|j tkr|�qS r )r( r )r; r< r r r r> � s c S s g | ]}|j r|�qS r )r# )r; r< r r r r> � s r c S s g | ]}|j r|�qS r )r& )r; r< r r r r> � s rs z==)rO c S s g | ]}|j r|�qS r )r& )r; r< r r r r> � s ))�__lt__�<)�__le__z<=)�__gt__�>)�__ge__z>=zCannot overwrite attribute z in class z). Consider using functools.total_ordering�__doc__z -> NonerR )'r r� r� r� r� �_PARAMSr2 �__mro__r. �_FIELDS�valuesr r6 r� �itemsr� r r! r �delattrre r7 �hasattrrh r� rk rm r@ rw r rr � _hash_action�boolrx r� �inspectZ signaturer r� ) rn r% r# r3 r4 r5 r6 r rO Zany_frozen_baseZhas_dataclass_basesrT Z base_fieldsr< Zcls_annotationsZ cls_fieldsr r] Z class_hashZhas_explicit_hashri r� Z field_listru rv rt rl Z hash_actionr )rn r �_process_class s� r� F)r% r# r3 r4 r5 r6 c s* � �����fdd�}| dkr"|S || �S )a� Returns the same class as was passed in, with dunder methods added based on the fields defined in the class. Examines PEP 526 __annotations__ to determine fields. If init is true, an __init__() method is added to the class. If repr is true, a __repr__() method is added. If order is true, rich comparison dunder methods are added. If unsafe_hash is true, a __hash__() method function is added. If frozen is true, fields may not be assigned to after instance creation. c s t | ��� ����S )N)r� )rn )r3 r6 r% r4 r# r5 r r �wrap� s zdataclass.<locals>.wrapNr )�_clsr% r# r3 r4 r5 r6 r� r )r3 r6 r% r4 r# r5 r r � s c C sB yt | t�}W n tk r* td��Y nX tdd� |�� D ��S )z�Return a tuple describing the fields of this dataclass. Accepts a dataclass or an instance of one. Tuple elements are of type Field. z0must be called with a dataclass type or instancec s s | ]}|j tkr|V qd S )N)r( r )r; r< r r r rU s zfields.<locals>.<genexpr>)r. r� �AttributeErrorre �tupler� )Zclass_or_instancer r r r r � s c C s t t| �t�S )z2Returns True if obj is an instance of a dataclass.)r� r r� )�objr r r �_is_dataclass_instance s r� c C s t | t�r| nt| �}t|t�S )zEReturns True if obj is a dataclass or an instance of a dataclass.)r� r r� r� )r� rn r r r r s )� dict_factoryc C s t | �std��t| |�S )a� Return the fields of a dataclass instance as a new dictionary mapping field names to field values. Example usage: @dataclass class C: x: int y: int c = C(1, 2) assert asdict(c) == {'x': 1, 'y': 2} If given, 'dict_factory' will be used instead of built-in dict. The function applies recursively to field values that are dataclass instances. This will also look into built-in containers: tuples, lists, and dicts. z0asdict() should be called on dataclass instances)r� re � _asdict_inner)r� r� r r r r s c s� t | �rHg }x2t| �D ]&}tt| |j�� �}|�|j|f� qW � |�S t| t�rvt| d�rvt | �� fdd�| D �� S t| t tf�r�t | �� fdd�| D ��S t| t �r�t | �� fdd�| � � D ��S t �| �S d S )N�_fieldsc s g | ]}t |� ��qS r )r� )r; �v)r� r r r> F s z!_asdict_inner.<locals>.<listcomp>c 3 s | ]}t |� �V qd S )N)r� )r; r� )r� r r rU K s z _asdict_inner.<locals>.<genexpr>c 3 s& | ] \}}t |� �t |� �fV qd S )N)r� )r; �kr� )r� r r rU M s )r� r r� r. r rg r� r� r� r r� r� r� �copy�deepcopy)r� r� rG r< r] r )r� r r� + s r� )� tuple_factoryc C s t | �std��t| |�S )a� Return the fields of a dataclass instance as a new tuple of field values. Example usage:: @dataclass class C: x: int y: int c = C(1, 2) assert astuple(c) == (1, 2) If given, 'tuple_factory' will be used instead of built-in tuple. The function applies recursively to field values that are dataclass instances. This will also look into built-in containers: tuples, lists, and dicts. z1astuple() should be called on dataclass instances)r� re �_astuple_inner)r� r� r r r r T s c s� t | �rBg }x,t| �D ] }tt| |j�� �}|�|� qW � |�S t| t�rpt| d�rpt | �� fdd�| D �� S t| t tf�r�t | �� fdd�| D ��S t| t �r�t | �� fdd�| � � D ��S t �| �S d S )Nr� c s g | ]}t |� ��qS r )r� )r; r� )r� r r r> z s z"_astuple_inner.<locals>.<listcomp>c 3 s | ]}t |� �V qd S )N)r� )r; r� )r� r r rU s z!_astuple_inner.<locals>.<genexpr>c 3 s& | ] \}}t |� �t |� �fV qd S )N)r� )r; r� r� )r� r r rU � s )r� r r� r. r rg r� r� r� r r� r� r� r� r� )r� r� rG r< r] r )r� r r� l s r� r )�bases� namespacer% r# r3 r4 r5 r6 c s � dkri � n� � � � t� } i } x�|D ]�} t| t�r>| } d}nDt| �dkrT| \} }n.t| �dkrt| \} }}|� | < ntd| ����t| t�r�| �� s�td| ����t�| �r�td| ����| | kr�td| ����| � | � || | < q&W | � d < t � | |i � fd d ��}t ||||||| d �S ) a� Return a new dynamically created dataclass. The dataclass name will be 'cls_name'. 'fields' is an iterable of either (name), (name, type) or (name, type, Field) objects. If type is omitted, use the string 'typing.Any'. Field objects are created by the equivalent of calling 'field(name, type [, Field-info])'. C = make_dataclass('C', ['x', ('y', int), ('z', int, field(init=False))], bases=(Base,)) is equivalent to: @dataclass class C(Base): x: 'typing.Any' y: int z: int = field(init=False) For the bases and namespace parameters, see the builtin type() function. The parameters init, repr, eq, order, unsafe_hash, and frozen are passed to dataclass(). Nz typing.Anyr� � zInvalid field: z'Field names must be valid identifiers: z"Field names must not be keywords: zField name duplicated: r� c s | � � �S )N)rf )rZ )r� r r �<lambda>� � z make_dataclass.<locals>.<lambda>)r% r# r3 r4 r5 r6 ) r� rK r� r� �lenre � isidentifier�keyword� iskeywordrD r* � new_classr )Zcls_namer r� r� r% r# r3 r4 r5 r6 �seenZanns�itemr �tp�specrn r )r� r r � s6 c O s� t | �dkr tdt | �� d���| r,| \}n d|kr@|�d�}ntd��t|�sXtd��x~t|t��� D ]l}|jtkrxqh|j s�|j |krht d|j � d���qh|j |krh|jt kr�t d |j �d ���t||j �||j < qhW |j f |�S ) a, Return a new object replacing specified fields with new values. This is especially useful for frozen classes. Example usage: @dataclass(frozen=True) class C: x: int y: int c = C(1, 2) c1 = replace(c, x=3) assert c1.x == 3 and c1.y == 2 r� z*replace() takes 1 positional argument but z were givenr� z7replace() missing 1 required positional argument: 'obj'z1replace() should be called on dataclass instanceszfield zC is declared with init=False, it cannot be specified with replace()zInitVar z! must be specified with replace())r� re �popr� r. r� r� r( r r% r r7 r � __class__)rY Zchangesr� r< r r r r � s* )N)B�rer� r� r* r� r� rV rL rB �__all__r� r r rc r r r+ r) r r r r r� r� rh �compiler� r r r r r2 r r@ rN r[ r_ r` ra rk rm rr rw ry r} r r� r� r� r� r� r� r� r� r r r� r r� r r� r� r r� r r r r r r �<module> s� : 62 ;R A )@
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