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편집 파일: compat.cpython-38.pyc
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The detect_encoding() function is used to detect the encoding that should be used to decode a Python source file. It requires one argument, readline, in the same way as the tokenize() generator. It will call readline a maximum of twice, and return the encoding used (as a string) and a list of any lines (left as bytes) it has read in. It detects the encoding from the presence of a utf-8 bom or an encoding cookie as specified in pep-0263. If both a bom and a cookie are present, but disagree, a SyntaxError will be raised. If the encoding cookie is an invalid charset, raise a SyntaxError. Note that if a utf-8 bom is found, 'utf-8-sig' is returned. If no encoding is specified, then the default of 'utf-8' will be returned. NFr c s$ z� � W S t k r Y dS X d S )N� )� StopIterationr )�readliner r � read_or_stop� s z%detect_encoding.<locals>.read_or_stopc s� z| � d�}W n4 tk rB d}�d k r6d�|��}t|��Y nX t�|�}|sVd S t|d �}z t|�}W n: tk r� �d kr�d| }n d��|�}t|��Y nX � r�|j dkr؈d kr�d}n d���}t|��|d 7 }|S ) Nr z'invalid or missing encoding declarationz {} for {!r}r zunknown encoding: z unknown encoding for {!r}: {}zencoding problem: utf-8z encoding problem for {!r}: utf-8z-sig) r� �UnicodeDecodeError�format� SyntaxError� cookie_re�findallr� r� � LookupErrorr� )�line� line_string�msg�matches�encoding�codec)� bom_foundr� r r � find_cookie� s> � �z$detect_encoding.<locals>.find_cookieTr z utf-8-sig)�__self__r� �AttributeErrorr6 r� )r� r� �defaultr� r� �first�secondr )r� r� r� r r� s4 ' r� )r8 � )r � )�unescape)�ChainMap)�MutableMapping)�recursive_repr�...c s � fdd�}|S )zm Decorator to make a repr function return fillvalue for a recursive call c sL t � � �� �fdd�}t�d�|_t�d�|_t�d�|_t�di �|_|S )Nc sB t | �t� f}|�kr� S ��|� z �| �}W 5 ��|� X |S rZ )�id� get_identr� �discard)r^ rU �result)� fillvalue� repr_running� user_functionr r �wrapper� s z=_recursive_repr.<locals>.decorating_function.<locals>.wrapperr, ra r+ �__annotations__)r� �getattrr, ra r+ r� )r� r� �r� )r� r� r �decorating_function� s �z,_recursive_repr.<locals>.decorating_functionr )r� r� r r� r �_recursive_repr� s r� c @ s� e Zd ZdZdd� Zdd� Zdd� Zd'd d �Zd d � Zd d� Z dd� Z dd� Z e � dd� �Z edd� �Zdd� ZeZdd� Zedd � �Zd d � Zd d � Zd!d"� Zd#d$� Zd%d&� ZdS )(r� a� A ChainMap groups multiple dicts (or other mappings) together to create a single, updateable view. 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 rZ )�KeyError�r^ rU r r r � __missing__! s zChainMap.__missing__c C s: | j D ](}z|| W S tk r, Y qX q| �|�S rZ )r� r� r� )r^ rU �mappingr r r � __getitem__$ s � �zChainMap.__getitem__Nc C s || kr| | S |S rZ r �r^ rU r� r r r rO . s z ChainMap.getc C s t t� j| j� �S rZ )rP r� �unionr� r� r r r �__len__1 s �zChainMap.__len__c C s t t� j| j� �S rZ )�iterr� r� r� r� r r r �__iter__5 s zChainMap.__iter__c s t � fdd�| jD ��S )Nc 3 s | ]}� |kV qd S rZ r )rq �m�rU r r ru 9 s z(ChainMap.__contains__.<locals>.<genexpr>�r r� r� r r� r � __contains__8 s zChainMap.__contains__c C s t | j�S rZ r� r� r r r �__bool__; s zChainMap.__bool__c C s d� | d�tt| j���S )Nz{0.__class__.__name__}({1})rM )r� r; rQ r3 r� r� r r r �__repr__> s �zChainMap.__repr__c G s | t j|f|�� �S )z?Create a ChainMap with a single dict created from the iterable.)�dict�fromkeys)�cls�iterabler� r r r r� C s zChainMap.fromkeysc C s$ | j | jd �� f| jdd� �� 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� H s z ChainMap.copyc C s | j i f| j�� S )z;New ChainMap with a new dict followed by all previous maps.�r� r� r� r r r � new_childN s zChainMap.new_childc C s | j | jdd� � S )zNew ChainMap from maps[1:].r. Nr� r� r r r �parentsR s zChainMap.parentsc C s || j d |< d S )Nr )r� )r^ rU rV r r r � __setitem__W s zChainMap.__setitem__c C s8 z| j d |= W n" tk r2 td�|���Y nX d S )Nr �(Key not found in the first mapping: {!r})r� r� r� r� r r r � __delitem__Z s �zChainMap.__delitem__c C s2 z| j d �� W S tk r, td��Y nX dS )zPRemove and return an item pair from maps[0]. Raise KeyError is maps[0] is empty.r z#No keys found in the first mapping.N)r� �popitemr� r� r r r r a s zChainMap.popitemc G s@ z| j d j|f|�� W S tk r: td�|���Y nX dS )zWRemove *key* from maps[0] and return its value. Raise KeyError if *key* not in maps[0].r r N)r� �popr� r� )r^ rU r� r r r r h s �z ChainMap.popc C s | j d �� dS )z'Clear maps[0], leaving maps[1:] intact.r N)r� �clearr� r r r r p s zChainMap.clear)N)r+ r, r- ra r` r� r� rO r� r� r� r� r� r� � classmethodr� r� �__copy__r� �propertyr� r r r r r r r r r r� s. r� )�cache_from_sourcec C s0 | � d�st�|d krd}|r$d}nd}| | S )Nz.pyT�c�o)ro �AssertionError)rd �debug_override�suffixr r r r y s r )� OrderedDict)r� )�KeysView� ValuesView� ItemsViewc @ s� e Zd ZdZdd� Zejfdd�Zejfdd�Zdd � Zd d � Z d d � Z d6dd�Z dd� Z dd� Z dd� Zdd� Zdd� Zdd � Zd d � ZeZe� Zefd d �Zd7d"d#�Zd8d$d%�Zd&d'� Zd(d)� Zed9d*d+��Z d,d-� Z d.d/� Z d0d1� Z d2d3� Z d4d5� Z!d!S ):r z)Dictionary that remembers insertion orderc O sn t |�dkr tdt |� ��z | j W n6 tk r\ g | _}||dg|dd�< i | _Y nX | j||� dS )z�Initialize an ordered dictionary. 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)rP r� �_OrderedDict__rootr� �_OrderedDict__map�_OrderedDict__update)r^ r� �kwds�rootr r r r` � s � zOrderedDict.__init__c C sF || kr6| j }|d }|||g |d< |d< | j|< || ||� dS )z!od.__setitem__(i, y) <==> od[i]=yr r. N)r r )r^ rU rV 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^ rU Z dict_delitem� link_prev� link_nextr r r r � s zOrderedDict.__delitem__c c s. | j }|d }||k r*|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 }||k r*|d V |d }qdS )z#od.__reversed__() <==> reversed(od)r r� Nr r r r r � __reversed__� s zOrderedDict.__reversed__c C sd z@| j �� D ]}|dd�= q | j}||dg|dd�< | j �� W n tk rT Y nX 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 rU rV 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 �rq rU r� r r rv s 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 rv s 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)rP r� r r� �hasattrr" r% )r� r r^ �otherrU rV r r r r] s( � zOrderedDict.updatec C s0 || kr| | }| |= |S || j kr,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^ rU r� r� r r r r 7 s zOrderedDict.popNc C s || kr| | S || |< |S )zDod.setdefault(k[,d]) -> od.get(k,d), also set od[k]=d if k not in odr r� r r r � setdefaultD s zOrderedDict.setdefaultc C sf |si }t | �t� f}||kr"dS d||< z.| sBd| jjf W �S d| jj| �� f W �S ||= X 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� K 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 �rq r( r� r r rv \ s z*OrderedDict.__reduce__.<locals>.<listcomp>N)�varsr� r r r� )r^ r% � inst_dictr( r r� r � __reduce__Z s zOrderedDict.__reduce__c C s | � | �S )z!od.copy() -> a shallow copy of od)r� r� r r r r� d 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� rV �drU r r r r� h s zOrderedDict.fromkeysc C s6 t |t�r*t| �t|�ko(| �� |�� kS t�| |�S )z�od.__eq__(y) <==> od==y. Comparison to another OD is order-sensitive while comparison to a regular mapping is order-insensitive. )r r rP r% r� �__eq__�r^ r+ r r r r5 s s ��zOrderedDict.__eq__c C s | |k S rZ r r6 r r r �__ne__} s zOrderedDict.__ne__c C s t | �S )z@od.viewkeys() -> a set-like object providing a view on od's keys)r r� r r r �viewkeys� s zOrderedDict.viewkeysc C s t | �S )z<od.viewvalues() -> an object providing a view on od's values)r r� r r r � viewvalues� s zOrderedDict.viewvaluesc C s t | �S )zBod.viewitems() -> a set-like object providing a view on od's items)r r� r r r � viewitems� s zOrderedDict.viewitems)T)N)N)N)"r+ r, r- ra r` r� r r r� r r r r" r$ r% r& r r) r] r �objectr, r r- r� r3 r� r r� r5 r7 r8 r9 r: r r r r r � s: r )�BaseConfigurator� valid_identz^[a-z_][a-z0-9_]*$c C s t �| �}|std| ��dS )Nz!Not a valid Python identifier: %rT)� IDENTIFIERr= rN )r r� r r r r= � s r= c @ s" e Zd ZdZdd� Zddd�ZdS )�ConvertingDictz A converting dictionary wrapper.c C sJ t �| |�}| j�|�}||k rF|| |< t|�tttfkrF| |_||_ |S rZ ) r� r� � configurator�convertr� r? �ConvertingList�ConvertingTuple�parentrU �r^ rU rV r� r r r r� � s �zConvertingDict.__getitem__Nc C sL t �| ||�}| j�|�}||k rH|| |< t|�tttfkrH| |_||_ |S rZ ) r� rO r@ rA r� r? rB rC rD rU �r^ rU r� rV r� r r r rO � s �zConvertingDict.get)N)r+ r, r- ra r� rO r r r r r? � s r? c C sD t �| ||�}| j�|�}||k r@t|�tttfkr@| |_||_ |S rZ ) r� r r@ rA r� r? rB rC rD rU rF r r r r � s �r c @ s" e Zd ZdZdd� Zddd�ZdS ) rB zA converting list wrapper.c C sJ t �| |�}| j�|�}||k rF|| |< t|�tttfkrF| |_||_ |S rZ ) r� r� r@ rA r� r? rB rC rD rU rE r r r r� � s �zConvertingList.__getitem__���c C s< t �| |�}| j�|�}||k r8t|�tttfkr8| |_|S rZ ) r� r r@ rA r� r? rB rC rD )r^ �idxrV r� r r r r � s �zConvertingList.popN)rG )r+ r, r- ra r� r r r r r rB � s rB c @ s e Zd ZdZdd� ZdS )rC zA converting tuple wrapper.c C sB t �| |�}| j�|�}||k r>t|�tttfkr>| |_||_ |S rZ ) �tupler� r@ rA r� r? rB rC rD rU rE r r r r� � s �zConvertingTuple.__getitem__N)r+ r, r- ra r� r r r r rC � s rC c @ s� e Zd ZdZe�d�Ze�d�Ze�d�Ze�d�Z e�d�Z ddd �Z e e �Zd d � Zd d � Zdd� Zdd� Zdd� Zdd� Zdd� ZdS )r< zQ The configurator base class which defines some useful defaults. z%^(?P<prefix>[a-z]+)://(?P<suffix>.*)$z ^\s*(\w+)\s*z^\.\s*(\w+)\s*z^\[\s*(\w+)\s*\]\s*z^\d+$� ext_convert� cfg_convert)rr �cfgc C s t |�| _| | j_d S rZ )r? �configr@ )r^ rM r r r r` s zBaseConfigurator.__init__c C s� |� d�}|�d�}z^| �|�}|D ]H}|d| 7 }zt||�}W q$ tk rj | �|� t||�}Y q$X q$|W S tk r� t�� dd� \}}td||f �}|| |_ |_ |�Y nX dS )zl Resolve strings to objects using standard import and attribute syntax. r/ r r. NzCannot resolve %r: %s) r1 r �importerr� r� � ImportErrorr{ r� rN � __cause__� __traceback__) r^ r r� �used�foundrF �e�tb�vr r r �resolve s" zBaseConfigurator.resolvec C s | � |�S )z*Default converter for the ext:// protocol.)rW �r^ rV r r r rJ s z BaseConfigurator.ext_convertc C s� |}| j �|�}|dkr&td| ��n�||�� d� }| j|�� d }|r�| j�|�}|rn||�� d }nd| j�|�}|r�|�� d }| j�|�s�|| }n2zt |�}|| }W n t k r� || }Y nX |r�||�� d� }qHtd||f ��qH|S )z*Default converter for the cfg:// protocol.NzUnable to convert %rr zUnable to convert %r at %r) � WORD_PATTERNr= rN �endrM �groups� DOT_PATTERN� INDEX_PATTERN� DIGIT_PATTERN�intr� )r^ rV �restr� r4 rH �nr r r rK s8 � �z BaseConfigurator.cfg_convertc C s� t |t�s$t |t�r$t|�}| |_n�t |t�sHt |t�rHt|�}| |_nzt |t�slt |t�rlt|�}| |_nVt |t�r�| j � |�}|r�|� � }|d }| j � |d�}|r�|d }t| |�}||�}|S )z� Convert values to an appropriate type. dicts, lists and tuples are replaced by their converting alternatives. 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