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편집 파일: compat.cpython-39.pyc
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The underlying mappings are stored in a list. That list is public and can accessed or updated using the *maps* attribute. There is no other state. Lookups search the underlying mappings successively until a key is found. In contrast, writes, updates, and deletions only operate on the first mapping. c G s t |�p i g| _dS )z�Initialize a ChainMap by setting *maps* to the given mappings. If no mappings are provided, a single empty dictionary is used. N)�list�maps)r\ r� r r r r^ s zChainMap.__init__c C s t |��d S rX )�KeyError�r\ rS r r r � __missing__ s zChainMap.__missing__c C s8 | j D ]&}z|| W S ty* Y q0 q| �|�S rX )r� r� r� )r\ rS �mappingr r r � __getitem__ s zChainMap.__getitem__Nc C s || v r| | S |S rX r �r\ rS r� r r r rM ' s z ChainMap.getc C s t t� j| j� �S rX )rN r �unionr� r� r r r �__len__* s zChainMap.__len__c C s t t� j| j� �S rX )�iterr r� r� r� r r r �__iter__- s zChainMap.__iter__c s t � fdd�| jD ��S )Nc 3 s | ]}� |v V qd S rX r )ro �m�rS r r rs 1 rt z(ChainMap.__contains__.<locals>.<genexpr>�r~ r� r� r r� r � __contains__0 s zChainMap.__contains__c C s t | j�S rX r� r� r r r �__bool__3 s zChainMap.__bool__c C s d� | d�tt| j���S )Nz{0.__class__.__name__}({1})rK )r� r< rO r4 r� r� r r r �__repr__6 s �zChainMap.__repr__c G s | t j|g|�R � �S )z?Create a ChainMap with a single dict created from the iterable.)�dict�fromkeys)�cls�iterabler� r r r r� ; s zChainMap.fromkeysc C s& | j | jd �� g| jdd� �R � S )zHNew ChainMap or subclass with a new copy of maps[0] and refs to maps[1:]r r N)� __class__r� �copyr� r r r r� @ s z ChainMap.copyc C s | j i g| j�R � S )z;New ChainMap with a new dict followed by all previous maps.�r� r� r� r r r � new_childF s zChainMap.new_childc C s | j | jdd� � S )zNew ChainMap from maps[1:].r Nr� r� r r r �parentsJ s zChainMap.parentsc C s || j d |< d S )Nr )r� )r\ rS rT r r r � __setitem__O s zChainMap.__setitem__c C s6 z| j d |= W n ty0 td�|���Y n0 d S )Nr �(Key not found in the first mapping: {!r})r� r� r� r� r r r � __delitem__R s zChainMap.__delitem__c C s0 z| j d �� W S ty* td��Y n0 dS )zPRemove and return an item pair from maps[0]. 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Signature is the same as for regular dictionaries, but keyword arguments are not recommended because their insertion order is arbitrary. r z$expected at most 1 arguments, got %dN)rN r� �_OrderedDict__rootr� �_OrderedDict__map�_OrderedDict__update)r\ r� �kwds�rootr r r r^ � s zOrderedDict.__init__c C sF || vr6| j }|d }|||g |d< |d< | j|< || ||� dS )z!od.__setitem__(i, y) <==> od[i]=yr r N)r r )r\ rS rT Z dict_setitemr �lastr r r r� � s zOrderedDict.__setitem__c C s0 || |� | j �|�\}}}||d< ||d< dS )z od.__delitem__(y) <==> del od[y]r r N)r r )r\ rS Z dict_delitem� link_prev� link_nextr r r r � s zOrderedDict.__delitem__c c s. | j }|d }||ur*|d V |d }qdS )zod.__iter__() <==> iter(od)r r� N�r �r\ r �currr r r r� � s zOrderedDict.__iter__c c s. | j }|d }||ur*|d V |d }qdS )z#od.__reversed__() <==> reversed(od)r r� Nr r r r r � __reversed__� s zOrderedDict.__reversed__c C sb z@| j �� D ]}|dd�= q | j}||dg|dd�< | j �� W n tyR Y n0 t�| � dS )z.od.clear() -> None. Remove all items from od.N)r � itervaluesr r r� r� )r\ �noder r r r r � s zOrderedDict.clearTc C s| | s t d��| j}|r8|d }|d }||d< ||d< n |d }|d }||d< ||d< |d }| j|= t�| |�}||fS )z�od.popitem() -> (k, v), return and remove a (key, value) pair. Pairs are returned in LIFO order if last is true or FIFO order if false. zdictionary is emptyr r r� )r� r r r� r )r\ r r �linkr r rS rT r r r r � s zOrderedDict.popitemc C s t | �S )z od.keys() -> list of keys in od)r� r� r r r �keys� s zOrderedDict.keysc s � fdd�� D �S )z#od.values() -> list of values in odc s g | ] }� | �qS r r �ro rS r� r r ru � rt z&OrderedDict.values.<locals>.<listcomp>r r� r r� r �values� s zOrderedDict.valuesc s � fdd�� D �S )z.od.items() -> list of (key, value) pairs in odc s g | ]}|� | f�qS r r r! r� r r ru � rt z%OrderedDict.items.<locals>.<listcomp>r r� r r� r �items� s zOrderedDict.itemsc C s t | �S )z0od.iterkeys() -> an iterator over the keys in od)r� r� r r r �iterkeys� s zOrderedDict.iterkeysc c s | D ]}| | V qdS )z2od.itervalues -> an iterator over the values in odNr �r\ �kr r r r � s zOrderedDict.itervaluesc c s | D ]}|| | fV qdS )z=od.iteritems -> an iterator over the (key, value) items in odNr r% r r r � iteritems s zOrderedDict.iteritemsc O s� t | �dkr tdt | �f ��n | s,td��| d }d}t | �dkrL| d }t|t�rn|D ]}|| ||< qZn<t|d�r�|�� D ]}|| ||< q�n|D ]\}}|||< q�|�� D ]\}}|||< q�dS ) a� od.update(E, **F) -> None. Update od from dict/iterable E and F. If E is a dict instance, does: for k in E: od[k] = E[k] If E has a .keys() method, does: for k in E.keys(): od[k] = E[k] Or if E is an iterable of items, does: for k, v in E: od[k] = v In either case, this is followed by: for k, v in F.items(): od[k] = v r� z8update() takes at most 2 positional arguments (%d given)z,update() takes at least 1 argument (0 given)r r r r N)rN r� r r� �hasattrr r# )r� r r\ �otherrS rT r r r r[ s( � zOrderedDict.updatec C s0 || v r| | }| |= |S || j u r,t|��|S )z�od.pop(k[,d]) -> v, remove specified key and return the corresponding value. If key is not found, d is returned if given, otherwise KeyError is raised. )�_OrderedDict__markerr� )r\ rS r� r� r r r r , s zOrderedDict.popNc C s || v r| | S || |< |S )zDod.setdefault(k[,d]) -> od.get(k,d), also set od[k]=d if k not in odr r� r r r � setdefault9 s zOrderedDict.setdefaultc C sn |si }t | �t� f}||v r"dS d||< z6| sFd| jjf W ||= S d| jj| �� f W ||= S ||= 0 dS )zod.__repr__() <==> repr(od)r� r z%s()z%s(%r)N)r� � _get_identr� r- r# )r\ � _repr_runningZcall_keyr r r r� @ s ��zOrderedDict.__repr__c sX � fdd�� D �}t � ��� }t t� �D ]}|�|d� q(|rL� j|f|fS � j|ffS )z%Return state information for picklingc s g | ]}|� | g�qS r r �ro r& r� r r ru P rt z*OrderedDict.__reduce__.<locals>.<listcomp>N)�varsr� r r r� )r\ r# � inst_dictr& r r� r � __reduce__N s zOrderedDict.__reduce__c C s | � | �S )z!od.copy() -> a shallow copy of od)r� r� r r r r� X s zOrderedDict.copyc C s | � }|D ] }|||< q |S )z�OD.fromkeys(S[, v]) -> New ordered dictionary with keys from S and values equal to v (which defaults to None). r )r� r� rT �drS r r r r� \ s zOrderedDict.fromkeysc C s6 t |t�r*t| �t|�ko(| �� |�� kS t�| |�S )z�od.__eq__(y) <==> od==y. 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