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Code Editor : pgdb.cpython-310.pyc
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(c) 1999, Pascal Andre <andre@via.ecp.fr>. See package documentation for further information on copyright. Inline documentation is sparse. See DB-API 2.0 specification for usage information: http://www.python.org/peps/pep-0249.html Basic usage: pgdb.connect(connect_string) # open a connection # connect_string = 'host:database:user:password:opt' # All parts are optional. You may also pass host through # password as keyword arguments. To pass a port, # pass it in the host keyword parameter: connection = pgdb.connect(host='localhost:5432') cursor = connection.cursor() # open a cursor cursor.execute(query[, params]) # Execute a query, binding params (a dictionary) if they are # passed. The binding syntax is the same as the % operator # for dictionaries, and no quoting is done. cursor.executemany(query, list of params) # Execute a query many times, binding each param dictionary # from the list. cursor.fetchone() # fetch one row, [value, value, ...] cursor.fetchall() # fetch all rows, [[value, value, ...], ...] cursor.fetchmany([size]) # returns size or cursor.arraysize number of rows, # [[value, value, ...], ...] from result set. # Default cursor.arraysize is 1. cursor.description # returns information about the columns # [(column_name, type_name, display_size, # internal_size, precision, scale, null_ok), ...] # Note that display_size, precision, scale and null_ok # are not implemented. cursor.rowcount # number of rows available in the result set # Available after a call to execute. connection.commit() # commit transaction connection.rollback() # or rollback transaction cursor.close() # close the cursor connection.close() # close the connection � )�print_function�division)�*N�nt)� � �PATHz libpq.dll)6� Connection�Cursor�Date�Time� Timestamp� DateFromTicks� TimeFromTicks�TimestampFromTicks�Binary�Interval�Uuid�Hstore�Json�Literal�Type�STRING�BINARY�NUMBER�DATETIME�ROWID�BOOL�SMALLINT�INTEGER�LONG�FLOAT�NUMERIC�MONEY�DATE�TIME� TIMESTAMP�INTERVAL�UUID�HSTORE�JSON�ARRAY�RECORD�Error�Warning�InterfaceError� DatabaseError� DataError�OperationalError�IntegrityError�ProgrammingError�NotSupportedError�apilevel�connect� paramstyle� threadsafety� get_typecast� set_typecast�reset_typecast�version� __version__)�date�time�datetime� timedelta�tzinfo)� localtime)�Decimal)r( )�isnan�isinf)�Iterable�� namedtuple)� iskeyword)�partial)�compile)�loads�dumps)� lru_cache)�update_wrapper)�RLockc @ s e Zd Zdd� Zdd� ZdS )rR c C � d S �N� ��selfrU rU �&/usr/lib/python3/dist-packages/pgdb.py� __enter__� � zRLock.__enter__c C rS rT rU )rW �exctype�excinst�exctbrU rU rX �__exit__� rZ zRLock.__exit__N)�__name__� __module__� __qualname__rY r^ rU rU rU rX rR � s rR � c s � fdd�}|S )z:Simplified functools.lru_cache decorator for one argument.c s� t � �i � � j�t� �g }|dg�||d d g|d d �< �dkr&�fdd�}n�d u r4� ���fdd�}n � �����fdd�}�|_t|��S )NFr c s � | �}|S rT rU ��arg�res)�functionrU rX �wrapper� s z-lru_cache.<locals>.decorator.<locals>.wrapperc s* �| ��}|�ur |S �| �}|� | < |S rT rU rc )�cacherf �get�sentinelrU rX rg � s c s� ��? �| �}|d ur:�d }|\}}}}||d< ||d< |d }| |d< |d< ||d< ||d< |W d � S W d � n1 sDw Y �| �}��v �\}}| � v rYnT|r�|} | | d< || d< | d }�d< |d } |d } d |d< |d< � | = | � | < n8|d }||| |g}| |d< |d< � | < t � ��kr�d�d< W d � |S W d � |S W d � |S W d � |S 1 s�w Y |S )Nr � � r T��len) rd �link�root�prev�next�_argre �last�full�oldroot�oldarg�oldres)rh rf ri �lock�maxsize� root_fullrU rX rg � s` � � �� �� �� ��)�objectri rR � __wrapped__rQ )rf rp rg �rz )rh rf ri ry r{ rj rX � decorator� s $ z lru_cache.<locals>.decoratorrU )rz r rU r~ rX rP � s BrP z2.0rk �pyformat)� signature)� getargspecc C s t | �jS rT )r� �args��funcrU rU rX �get_args� � r� c C s t t| �j�S rT )�listr� � parametersr� rU rU rX r� � � )�timezonec @ s2 e Zd ZdZd dd�Zdd� Zdd� Zd d � ZdS ) r� z Simple timezone implementation.Nc C sf || _ |s.| j jd | j jd }|dk r!t| d�\}}| }nt|d�\}}d||f }|| _d S )Ni� �< r z UTC%+03d:%02d)�offset�days�seconds�divmod�name)rW r� r� �minutes�hoursrU rU rX �__init__ s ztimezone.__init__c C � | j S rT )r� �rW �dtrU rU rX � utcoffset � ztimezone.utcoffsetc C r� rT �r� r� rU rU rX �tzname r� ztimezone.tznamec C rS rT rU r� rU rU rX �dst s z timezone.dstrT )r_ r` ra �__doc__r� r� r� r� rU rU rU rX r� � s r� �UTCFTz+0100z+0200z-0500�+0000z-1000z-0700) �CET�EET�EST�GMT�HST�MET�MST�UCTr� �WETc C s6 | � d�rt| �dk r| d S | �dd�S t�| d�S )N)�+�-� �00�:� r� )� startswithrn �replace� _timezonesri )�tzrU rU rX �_timezone_as_offset! s r� c C sN t | �} dt| dd� � t| dd� � }| d dkr | }tt|d�| �S )Nr� rk r r� r r� )r� )r� �intr� rB )r� r� rU rU rX � _get_timezone) s $ r� c C s | dur | a td| � t S )z�Get or set global type to be used for decimal values. 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The cast functions get passed the string representation of a value in the database which they need to convert to a Python object. The passed string will never be None since NULL values are already handled before the cast function is called. �char�bpcharr� �text�varchar�bool�bytea�int2�int4�serial�int8�oid�hstore�json�jsonb�float4�float8) r� �moneyr? �intervalr@ r� � timestamp� timestamptz� int2vector�uuid�anyarray�recordNc C sp t |t�s td| ��| j�|�}|r | �|�}|| |< |S |�d�r6| |dd� }| �|�}|r6|| |< |S )z�Create a cast function if it is not cached. Note that this class never raises a KeyError, but returns None when no special cast function exists. zInvalid type: %s�_rk N)� isinstance�str� TypeError�defaultsri �_add_connectionr� �create_array_cast)rW �typ�cast� base_castrU rU rX � __missing__* s � zTypecasts.__missing__c C s6 zt | �}W n ttfy Y dS w d|dd� v S )z9Check if a typecast function needs a connection argument.Fr� rk N)r� r* r )r� r� rU rU rX �_needs_connection@ s �zTypecasts._needs_connectionc C s" | j r| �|�s |S t|| j d�S )z@Add a connection argument to the typecast function if necessary.)r� )r� r2 rL )rW r/ rU rU rX r, J s zTypecasts._add_connectionc C s | | p|S �z6Get the typecast function for the given database type.rU )rW r. �defaultrU rU rX ri P � z Typecasts.getc C s~ t |t�r|g}|du r!|D ]}| �|d� | �d| d� qdS t|�s)td��|D ]}| �|�| |< | �d| d� q+dS )�;Set a typecast function for the specified database type(s).N�_%sz Cast parameter must be callable)r( � basestringr� �callabler* r, )rW r. r/ r� rU rU rX �setT s ��z Typecasts.setc C s� | j }|du r| �� | �|� dS t|t�r|g}|D ]8}|�|�}|rF| �|�| |< d| }|�|�}|r?| �|�| |< q | �|d� q | �|d� | �d| d� q dS )z�Reset the typecasts for the specified type(s) to their defaults. When no type is specified, all typecasts will be reset. Nr7 )r+ �clear�updater( r8 ri r, r� )rW r. r+ r� r/ rU rU rX �resetc s$ �zTypecasts.resetc s | d �� �fdd�}|S )z1Create an array typecast for the given base cast.r% c s �| � �S rT rU �r� ��basecast� cast_arrayrU rX r/ � r� z)Typecasts.create_array_cast.<locals>.castrU )rW r@ r/ rU r? rX r- } s zTypecasts.create_array_castc s& | d � t ||��� ��fdd�}|S )z>Create a named record typecast for the given fields and casts.r& c s �� | ��� S rT rU r> �� cast_record�castsr& rU rX r/ � r� z*Typecasts.create_record_cast.<locals>.castrI )rW r� �fieldsrD r/ rU rB rX �create_record_cast� s z Typecasts.create_record_castrT )#r_ r` ra r� r) r� �unescape_bytear� �long� cast_hstore� jsondecode�floatrE r� r� r r� r� r� r� r� r rA rC r+ r� r1 � staticmethodr2 r, ri r: r= r- rF rU rU rU rX r s` ��������������� r c C s t �| �S )z@Get the global typecast function for the given database type(s).�� _typecastsri �r. rU rU rX r: � � r: c C s t �| |� dS )z�Set a global typecast function for the given database type(s). Note that connections cache cast functions. To be sure a global change is picked up by a running connection, call con.type_cache.reset_typecast(). N�rN r: )r. r/ rU rU rX r; � s r; c C s t �| � dS )a Reset the global typecasts for the given type(s) to their default. When no type is specified, all typecasts will be reset. Note that connections cache cast functions. To be sure a global change is picked up by a running connection, call con.type_cache.reset_typecast(). N�rN r= rO rU rU rX r< � s r< c @ s( e Zd ZdZeZdZdd� Zdd� ZdS )�LocalTypecastszBMap typecasts, including local composite types, to cast functions.Nc s� |� d�r� |dd� }� �|�}|r|� |< |S � j�|�}|r-� �|�}|� |< |S � �|�}|rO� fdd�|D �}dd� |D �}� �|||�}|� |< |S )z+Create a cast function if it is not cached.r' rk Nc s g | ]}� |j �qS rU )�type�r� �fieldrV rU rX r� � r� z.LocalTypecasts.__missing__.<locals>.<listcomp>c S s g | ]}|j �qS rU r� rU rU rU rX r� � s )r� r- r+ ri r, � get_fieldsrF )rW r. r0 r/ rE rD rU rV rX r1 � s$ � �zLocalTypecasts.__missing__c C s g S )z�Return the fields for the given record type. This method will be replaced with a method that looks up the fields using the type cache of the connection. rU �rW r. rU rU rX rW � s zLocalTypecasts.get_fields) r_ r` ra r� rN r+ r� r1 rW rU rU rU rX rS � s rS c @ s e Zd ZdZedd� �ZdS )�TypeCodez�Class representing the type_code used by the DB-API 2.0. TypeCode objects are strings equal to the PostgreSQL type name, but carry some additional information. c C s0 | |�}||_ ||_||_||_||_||_|S )z.Create a type code for a PostgreSQL data type.)r rn rT �category�delim�relid) �clsr r� rn rT rZ r[ r\ rW rU rU rX �create� s zTypeCode.createN)r_ r` ra r� � classmethodr^ rU rU rU rX rY � s rY � FieldInfor� rT c s\ e Zd ZdZ� fdd�Zdd� Zddd�Zd d � Zd d � Zd d� Z ddd�Z dd� Z � Z S )� TypeCachez�Cache for database types. This cache maps type OIDs and names to TypeCode strings containing important information on the associated database type. c sX t t| ��� |j| _|�� | _t� | _| j | j_ || j_ |j dk r'd| _ dS d| _ dS )z%Initialize type cache for connection.i: z�SELECT oid, typname, typlen, typtype, null as typcategory, typdelim, typrelid FROM pg_catalog.pg_type WHERE oid OPERATOR(pg_catalog.=) %sz�SELECT oid, typname, typlen, typtype, typcategory, typdelim, typrelid FROM pg_catalog.pg_type WHERE oid OPERATOR(pg_catalog.=) %sN) �superra r� � escape_string�_escape_string�source�_srcrS rN rW r� �server_version�_query_pg_type�rW �cnx�� __class__rU rX r� � s zTypeCache.__init__c C s� t |t�r|}nd|vrd|vrd|f }d| �|�f }z | j�| j|f � W n ty4 d}Y nw | j�d�}|sDtd|f ��|d }t � t|d �|d t|d �|d |d |d t|d ��}| | |j < | t |�< |S )z8Get the type info from the database if it is not cached.�.�"�"%s"z '%s'::regtypeNrk zType %s could not be foundr rl r r� r� � ) r( r� rd rf �executerh r4 �fetch�KeyErrorrY r^ r r) )rW �keyr re � type_coderU rU rX r1 � s& � &�zTypeCache.__missing__Nc C s" z| | W S t y | Y S w )z&Get the type even if it is not cached.)rs )rW rt r4 rU rU rX ri s �z TypeCache.getc sT t |t�s� �|�}|sdS |jsdS � j�d|jf � � fdd�� j�d�D �S )z9Get the names and types of the fields of composite types.Nz�SELECT attname, atttypid FROM pg_catalog.pg_attribute WHERE attrelid OPERATOR(pg_catalog.=) %s AND attnum OPERATOR(pg_catalog.>) 0 AND NOT attisdropped ORDER BY attnumc s$ g | ]\}}t |� �t|����qS rU )r` ri r� )r� r� r rV rU rX r� ' s �z(TypeCache.get_fields.<locals>.<listcomp>r� )r( rY ri r\ rf rq rr rX rU rV rX rW s � �zTypeCache.get_fieldsc C s | j �|�S r3 rM rX rU rU rX r: * r5 zTypeCache.get_typecastc C s | j �||� dS )r6 NrQ )rW r. r/ rU rU rX r; . r� zTypeCache.set_typecastc C s | j �|� dS )z?Reset the typecast function for the specified database type(s).NrR rX rU rU rX r< 2 � zTypeCache.reset_typecastc C s. |du rdS | � |�}|r|tu r|S ||�S )z:Cast the given value according to the given database type.N)r: r) )rW r� r. r/ rU rU rX �typecast6 s zTypeCache.typecastrT ) r_ r` ra r� r� r1 ri rW r: r; r< rw � __classcell__rU rU rk rX ra � s ra c s e Zd ZdZ� fdd�Z� ZS )� _quotedictzsDictionary with auto quoting of its items. The quote attribute must be set to the desired quote function. c s | � tt| ��|��S rT )�quoterb ry � __getitem__)rW rt rk rU rX r{ H s z_quotedict.__getitem__)r_ r` ra r� r{ rx rU rU rk rX ry B s ry c C s || �}d|_ |S )z3Return DatabaseError with empty sqlstate attribute.N)�sqlstate)�msgr] �errorrU rU rX � _db_errorN s r c C s t | t�S )zReturn OperationalError.)r r2 )r} rU rU rX � _op_errorU rP r� z^[A-Za-z][_a-zA-Z0-9]*$i r~ c C s~ z$z t d| dd�jW W S ty$ dd� t| �D �} t d| �j Y W S w ty> dd� tt| ��D �} t d| �j Y S w )z>Get a namedtuple factory for row results with the given names.�RowT)�renamec S s0 g | ]\}}t �|�rt|�s|nd |f �qS �z column_%d)� _re_fieldnamer� rK )r� �nr� rU rU rX r� i s ��z _row_factory.<locals>.<listcomp>c S s g | ]}d |f �qS r� rU )r� r� rU rU rX r� n r� )rJ �_maker* � enumerater �rangern )�namesrU rU rX � _row_factoryb s �� �r� c C s t | �tj�adS )zwChange the size of the namedtuple factory cache. If maxsize is set to None, the cache can grow without bound. N)rP r� r} r~ rU rU rX �set_row_factory_sizer s r� c @ s e Zd ZdZdd� Zdd� Zdd� Zdd � Zd d � Zd d � Z dd� Z e dd� �Z e dd� �Z e dd� �Zdd� Zd7dd�Zdd � Zd d � Zd d � Zd8d"d#�Zd7d$d%�Z d9d&d'�Z d9d(d)�Zd*d+� ZeZed,d-� �Zed.d/� �Z ed:d1d2��Z ed3d4� �Z d5d6� Z dS );r zCursor object.c C s^ | | _ | _|j| _|j| _| j�� | _d| _| jtju r!d| _nd| _ d| _ d| _ d| _ dS )z3Create a cursor object for the database connection.Nr� rk ) r� �_dbcnx�_cnx� type_cachere rf � _description� row_factoryr �build_row_factory�rowcount� arraysize� lastrowid)rW �dbcnxrU rU rX r� � s zCursor.__init__c C � | S )z1Make cursor compatible to the iteration protocol.rU rV rU rU rX �__iter__� � zCursor.__iter__c C r� )z0Enter the runtime context for the cursor object.rU rV rU rU rX rY � r� zCursor.__enter__c C s | � � dS )z/Exit the runtime context for the cursor object.N)�close�rW �et�ev�tbrU rU rX r^ � r5 zCursor.__exit__c sT |du rdS t |ttf�rt|�}t |t�r6t |t�r+| j�|�}ttur*|� d�}n| j� |�}d|f S t |t �rOt |�rG|dk rEdS dS t |�rMdS |S t |ttttf�rZ|S t |t�rl|jrgd |f S d |f S t |t�rvd |f S t |t�r�|jr�d |f S d | S t |t�r�d|f S t |t�r�d|f S t |t�r�|s�dS | j� zdd�� fdd�|D ��f W S ty� dd�� fdd�|D ��f Y S w t |t ��r| j� zdd�� fdd�|D ��f W S t�y dd�� fdd�|D ��f Y S w z|� � }W n t �y t dt |�f ��w t |t tf��r(| �|�}|S )z"Quote value depending on its type.N�NULL�ascii�'%s'r z '-Infinity'z 'Infinity'z'NaN'z'%s'::timestamptzz'%s'::timestampz '%s'::datez '%s'::timetzz '%s'::timez'%s'::intervalz '%s'::uuidz'{}'z ARRAY[%s]�,c 3 � � | ] }t � |��V qd S rT �r) r� ��qrU rX r� � � � z Cursor._quote.<locals>.<genexpr>c 3 r� rT ��unicoder� r� rU rX r� � r� �(%s)c 3 r� rT r� r� r� rU rX r� � r� c 3 r� rT r� r� r� rU rX r� � r� z Do not know how to adapt type %s)!r( r r r) r8 r r� � escape_bytea�bytes�decoderc rK rG rF r� rH rE r rA rC r? r@ rB r r� �_quoter� �UnicodeEncodeError�tuple� __pg_repr__�AttributeErrorr/ rT )rW r� rU r� rX r� � sx � "� "� �� z Cursor._quotec C sd |sz|d W S t tfy | Y S w t|t�r&t|�}| j|_|| S tt| j|��}|| S )z�Quote parameters. This function works for both mappings and sequences. The function should be used even when there are no parameters, so that we have a consistent behavior regarding percent signs. rU ) r* r r( �dictry r� rz r� �map)rW �stringr� rU rU rX � _quoteparams� s � �zCursor._quoteparamsc C s� |dd� \}}}}| j | }|dkr|d8 }|dkr'|d? |d@ }}|}n|s,|j}|dkr2|}d }}t||d|||d�S ) z4Make the description tuple for the given field info.rk Nr r� r� � i�� r� )r� �size�CursorDescription) rW �infor� r. r� �modru � precision�scalerU rU rX �_make_description� s �zCursor._make_descriptionc s8 | j }| j du r| j� � fdd�| j�� D �}|| _ |S )z2Read-only attribute describing the result columns.Tc s g | ]}� |��qS rU rU )r� r� ��makerU rX r� r� z&Cursor.description.<locals>.<listcomp>)r� r� rf �listinfo)rW �descrrU r� rX � description s zCursor.descriptionc C � dd� | j D �S )z;Unofficial convenience method for getting the column names.c S � g | ]}|d �qS �r rU r� rU rU rX r� r� z#Cursor.colnames.<locals>.<listcomp>�r� rV rU rU rX �colnames � zCursor.colnamesc C r� )z;Unofficial convenience method for getting the column types.c S r� )rk rU r� rU rU rX r� r� z#Cursor.coltypes.<locals>.<listcomp>r� rV rU rU rX �coltypes r� zCursor.coltypesc C s | j �� dS )zClose the cursor object.N)rf r� rV rU rU rX r� s z Cursor.closeNc sd � r+t � t�r+t� �dkr+tdd� � D ��r+t� fdd�� dd� D ��r+| �|� �S | �|� g�S )z<Prepare and execute a database operation (query or command).rk c s s � | ]}t |t�V qd S rT )r( r� �r� �prU rU rX r� ( � � z!Cursor.execute.<locals>.<genexpr>c 3 s$ � | ] }t |�t � d �kV qdS )r Nrm r� �r� rU rX r� ) r� N)r( r� rn �all� executemany)rW � operationr� rU r� rX rq s � � zCursor.executec C sT |sdS d| _ d| _d}d}zF| jjs6| jjs6z| j�|� W n ty' � ty1 t d��w d| j_|D ]}|}| � ||�}| j�|�}|rO||7 }q8d| _q8W n/ ty\ � t yp } z t d||f t ��d}~w ty� } zt d||f ��d}~ww | jjtkr�d| _ | jj| _d| _| jr�| �� | _| S || _| j�� | _| S ) z>Prepare operation and execute it against a parameter sequence.Nr� r �BEGIN�Can't start transactionTzError in '%s': '%s' zInternal error in '%s': %s)r� r� r� �_tnx� autocommitrf rq r0 � Exceptionr� r� r- r r/ � resulttype� RESULT_DQL�ntuplesr� r� r� � oidstatus)rW r� �seq_of_parametersr� �sqlr� �rows�errrU rU rX r� / sZ � � ���� � zCursor.executemanyc C s, | � dd�}z|d W S ty Y dS w )z)Fetch the next row of a query result set.rk Fr N)� fetchmany� IndexError�rW re rU rU rX �fetchone` s �zCursor.fetchonec C s | � dd�S )z-Fetch all (remaining) rows of a query result.r� F)r� rV rU rU rX �fetchallh r5 zCursor.fetchallFc sx |du r� j }|r |� _ z� j�|�}W n ty � ty- } ztt|���d}~ww � jj�� �fdd�|D �S )a> Fetch the next set of rows of a query result. The number of rows to fetch per call is specified by the size parameter. If it is not given, the cursor's arraysize determines the number of rows to be fetched. If you set the keep parameter to true, this is kept as new arraysize. Nc s, g | ]}� � �fd d�t� j|�D ���qS )c s g | ] \}}� ||��qS rU rU )r� r. r� )rw rU rX r� s �z/Cursor.fetchmany.<locals>.<listcomp>.<listcomp>)r� �zipr� )r� �row�rW rw rU rX r� s � �z$Cursor.fetchmany.<locals>.<listcomp>) r� rf rr r0 r- r r) r� rw )rW r� �keep�resultr� rU r� rX r� l s �� �zCursor.fetchmanyc C s8 |rt |�pd}d|d�|dg �f }| �||� |S )a� Call a stored database procedure with the given name. The sequence of parameters must contain one entry for each input argument that the procedure expects. The result of the call is the same as this input sequence; replacement of output and input/output parameters in the return value is currently not supported. The procedure may also provide a result set as output. These can be requested through the standard fetch methods of the cursor. r zselect * from "%s"(%s)r� z%s)rn r� rq )rW �procnamer� r� �queryrU rU rX �callproc� s zCursor.callprocc s� |dk}z�j �W n^ tyg �rtd��|r t� d�nt� d�t�t�rSt�� �s2td�f ��|sLt�t�rC��d�sB�d7 �n ��d�sL�d7 ��fdd �} nt�t�ra� ��fd d �} nt d ��Y n#w �d u rod �n t�t �sxt d���dkr���fdd �} n�fdd �} |r�t|t�s�t d��|� � � d�r�td��d|f }d|f g} g } g } |d ur�t|t�s�t d��|dvr�td��| � d|f � |d ur�t|t�s�t d��|dkr�td ��t|�d kr�td ��| � d � | � |� |d u�rt|t��st d ��| � d!� | � |� |�r)t|t��s!d"�d#d$� |D ��}| � d%|f � | � d&� | �r<| � d%d"�| �f � d'�| �} | jj} | �| | � z | � D ]}| |� �qOW n t�ys } zd(| _| |� W Y d }~| S d }~ww | d �| _| S ))a� Copy data from an input stream to the specified table. The input stream can be a file-like object with a read() method or it can also be an iterable returning a row or multiple rows of input on each iteration. The format must be text, csv or binary. The sep option sets the column separator (delimiter) used in the non binary formats. The null option sets the textual representation of NULL in the input. The size option sets the size of the buffer used when reading data from file-like objects. The copy operation can be restricted to a subset of columns. If no columns are specified, all of them will be copied. �binaryz+Size must only be set for file-like objectsz byte strings�stringszThe input must be %s� � c 3 s � � V d S rT rU rU )�streamrU rX �chunks� s � z Cursor.copy_from.<locals>.chunksc 3 s^ � �D ])} t | � �std�f ��t | t�r | �d�s | d7 } n | �d�s)| d7 } | V qd S )Nz Input stream must consist of %sr� r� )r( r r) r� )�chunk)� input_typer� � type_namerU rX r� � s � �� � �z!Need an input stream to copy fromNi z"The size option must be an integerr c 3 s( � � ��} | V | rt | ��k rd S qrT rm )�buffer)�readr� rU rX r� � s ��c 3 s � � � V d S rT rU rU )r� rU rX r� � s � �Need a table to copy to�selectz!Must specify a table, not a queryro �copy %sz%The format option must be be a string�r �csvr� �Invalid format� format %s� The sep option must be a string�0The sep option is not allowed with binary formatrk �2The sep option must be a single one-byte character� delimiter %s� The null option must be a string�null %sr� c s � � | ]}d |f V qdS �ro NrU �r� �colrU rU rX r� r� z#Cursor.copy_from.<locals>.<genexpr>r� z from stdinr� r� )r� r� r r� r8 r( r) r� rH r* r� �lowerr� r� rn r� rf �putdatarq � BaseExceptionr� )rW r� �table�format�sep�nullr� �columns� binary_formatr� r� �options�paramsr r� r~ rU )r� r� r� r� r� rX � copy_from� s� � ��+ � � ��� zCursor.copy_fromc s6 |dk}|durz|j } W n ty td��w |r t|t�s$td��|�� �d�r7|r1td��d|f }nd|f }d |f g} g } g } |durct|t�sStd ��|d vr[td ��| �d |f � |dur�t|t�sptd��|rvtd��t |�dkr�td��| �d� | �|� |dur�t|t�s�td��| �d� | �|� � du r�|dkr�d� nt t u � nt� t t f�s�td��� r�|r�td��|r�t|t�s�d�dd� |D ��}| �d|f � | �d� | r�| �dd�| �f � d �| �} �jj���| | � � ��fd d �} |du �r| � S | � D ]}| |� �q�S ) a Copy data from the specified table to an output stream. The output stream can be a file-like object with a write() method or it can also be None, in which case the method will return a generator yielding a row on each iteration. Output will be returned as byte strings unless you set decode to true. Note that you can also use a select query instead of the table name. The format must be text, csv or binary. The sep option sets the column separator (delimiter) used in the non binary formats. The null option sets the textual representation of NULL in the output. The copy operation can be restricted to a subset of columns. If no columns are specified, all of them will be copied. r� Nz Need an output stream to copy tor� r� z&Columns must be specified in the queryr� ro r� z"The format option must be a stringr� r� r� r� r� rk r� r r r Fz#The decode option must be a booleanz3The decode option is not allowed with binary formatr� c s r r rU r rU rU rX r� c r� z!Cursor.copy_to.<locals>.<genexpr>z to stdoutr� c 3 sF � d�_ �� �} t| t�r�j | kr| �_ d S � j d7 _ | V q)Nr Trk )r� r( r� �r� �r� �getdatarW rU rX �copyn s � �z Cursor.copy_to.<locals>.copy)�writer� r* r( r8 r r� r r� rn r) r� r� r r� rf r rq )rW r� r r r r r� r r r r� r r r r� rU r rX �copy_to s� � � � � zCursor.copy_toc C s | � � }|du r t�|S )z9Return the next row (support for the iteration protocol).N)r� � StopIterationr� rU rU rX �__next__� s zCursor.__next__c C s t d��)�Not supported.z%The nextset() method is not supported)r5 rU rU rU rX �nextset� s zCursor.nextsetc C � dS �r NrU )�sizesrU rU rX � setinputsizes� � zCursor.setinputsizesr c C r r rU )r� �columnrU rU rX � setoutputsize� r! zCursor.setoutputsizec C s t �)a� Process rows before they are returned. You can overwrite this statically with a custom row factory, or you can build a row factory dynamically with build_row_factory(). For example, you can create a Cursor class that returns rows as Python dictionaries like this: class DictCursor(pgdb.Cursor): def row_factory(self, row): return {desc[0]: value for desc, value in zip(self.description, row)} cur = DictCursor(con) # get one DictCursor instance or con.cursor_type = DictCursor # always use DictCursor instances )�NotImplementedErrorr rU rU rX r� � s zCursor.row_factoryc C s | j }|r tt|��S dS )a Build a row factory based on the current description. This implementation builds a row factory for creating named tuples. You can overwrite this method if you want to dynamically create different row factories whenever the column description changes. N)r� r� r� )rW r� rU rU rX r� � s �zCursor.build_row_factoryrT )NF�NNNNNr� ) r_ r` ra r� r� r� rY r^ r� r� r� �propertyr� r� r� r� rq r� r� r� r� r� r r r rr rL r r r# r� r� rU rU rU rX r } sL E 1 � �h r r� )r� ru � display_size� internal_sizer� r� �null_okc @ s� e Zd ZdZeZeZeZeZeZe Z e Z e Z e Z e Z dd� Zdd� Zdd� Zdd � Zed d � �Zd d � Zdd� Zdd� ZerIddd�Zdd� ZdS dS )r zConnection object.c C sJ || _ d| _t|�| _t| _d| _z| j �� W dS ty$ t d��w )z$Create a database connection object.F�Invalid connectionN) r� r� ra r� r � cursor_typer� re r� r� ri rU rU rX r� � s �zConnection.__init__c C sJ | j r#z | j�� �d� W n ty � ty td��w d| _| S )z�Enter the runtime context for the connection object. The runtime context can be used for running transactions. This also starts a transaction in autocommit mode. r� r� T)r� r� re rq r0 r� r� r� rV rU rU rX rY � s �zConnection.__enter__c C s0 |du r|du r|du r| � � dS | �� dS )z�Exit the runtime context for the connection object. This does not close the connection, but it ends a transaction. N)�commit�rollbackr� rU rU rX r^ � s zConnection.__exit__c C sH | j r | jrz| �� W n ty Y nw | j �� d| _ dS td��)z Close the connection object.N�Connection has been closed)r� r� r- r0 r� r� rV rU rU rX r� � s � zConnection.closec C s, z | j p | j jdkW S ty Y dS w )z:Check whether the connection has been closed or is broken.rk T)r� �statusr* rV rU rU rX �closed s �zConnection.closedc C �Z | j r)| jr'd| _z | j �� �d� W dS ty � ty& td��w dS td��)z/Commit any pending transaction to the database.F�COMMITzCan't commit transactionr. N�r� r� re rq r0 r� r� rV rU rU rX r, � �� zConnection.commitc C r1 )z2Roll back to the start of any pending transaction.F�ROLLBACKzCan't rollback transactionr. Nr3 rV rU rU rX r- r4 zConnection.rollbackc C s2 | j rz| �| �W S ty td��w td��)z0Return a new cursor object using the connection.r* r. )r� r+ r� r� rV rU rU rX �cursor. s �zConnection.cursorNc C � | � � }|�||� |S )z:Shortcut method to run an operation on an implicit cursor.)r6 rq )rW r� r r6 rU rU rX rq : � zConnection.executec C r7 )z7Shortcut method to run an operation against a sequence.)r6 r� )rW r� � param_seqr6 rU rU rX r� @ r8 zConnection.executemanyrT )r_ r` ra r� r- r. r/ r0 � InternalErrorr2 r4 r3 r1 r5 r� rY r^ r� r& r0 r, r- r6 �shortcutmethodsrq r� rU rU rU rX r � s2 �r c K s� d}d}d}d} d} d} z| � d�} | d }| d }| d } | d } | d } W n tttfy3 Y nw |d ur:|} |d ur@|} |d urF|}|d uriz|� d�} | d }t| d �}W n ttttfyh Y nw |dkrod }| dkrud } |r�t|�� �}d |v r�|g}n |�dd |f� g }|D ]$\} }t |�}|r�d |v r�d |� dd�� dd�f }|� d| |f � q�d � |�}t |||| | | �}t|�S )zConnect to a database.r� r� r� r rk rl r r� N�=�dbnamer� r� �'z\'�\z\\z%s=%s)r� r� r� r* r� r r� �items�insertr) r� r� r� �_connectr )�dsn�user�password�host�database�kwargs�dbport�dbhostr= �dbuser�dbpasswd�dboptr �kwr� rj rU rU rX r7 K sh � � �� r7 c s8 e Zd ZdZ� fdd�Z� fdd�Z� fdd�Z� ZS )r z�Type class for a couple of PostgreSQL data types. PostgreSQL is object-oriented: types are dynamic. We must thus use type names as internal type codes. c s$ t |t�r |�� }tt| ��| |�S rT )r( r8 r� rb r �__new__)r] �valuesrk rU rX rO � s z Type.__new__c s8 t |t�r|�d�r|dd � }|| v S tt| ��|�S �Nr' rk )r( r8 r� rb r �__eq__�rW �otherrk rU rX rR � � z Type.__eq__c s8 t |t�r|�d�r|dd � }|| vS tt| ��|�S rQ )r( r8 r� rb r �__ne__rS rk rU rX rV � rU z Type.__ne__)r_ r` ra r� rO rR rV rx rU rU rk rX r � s r c @ � e Zd ZdZdd� Zdd� ZdS )� ArrayTypez&Type class for PostgreSQL array types.c C s t |t�r |�d�S t |t�S �Nr' �r( r8 r� rX rS rU rU rX rR � s zArrayType.__eq__c C s" t |t�r |�d� S t |t� S rY rZ rS rU rU rX rV � s zArrayType.__ne__N�r_ r` ra r� rR rV rU rU rU rX rX � s rX c @ rW )� RecordTypez'Type class for PostgreSQL record types.c C s0 t |t�r |jdkS t |t�r|dkS t |t�S �Nr� r& �r( rY rT r8 r\ rS rU rU rX rR � s zRecordType.__eq__c C s2 t |t�r |jdkS t |t�r|dkS t |t� S r] r^ rS rU rU rX rV � s zRecordType.__ne__Nr[ rU rU rU rX r\ � s r\ z char bpchar name text varcharr z1int2 int4 serial int8 float4 float8 numeric moneyz?date time timetz timestamp timestamptz interval abstime reltimer r r zint2 int4 int8 serialr z float4 float8r� r r? z time timetzztimestamp timestamptzr r$ r z json jsonbc C s t | ||�S )z)Construct an object holding a date value.)r? )�year�month�dayrU rU rX r � r5 r c C s t | ||||�S )z)Construct an object holding a time value.)r@ )�hour�minute�second� microsecondrC rU rU rX r � rv r c C s t | |||||||�S )z/Construct an object holding a time stamp value.)rA )r_ r` ra rb rc rd re rC rU rU rX r � s r c C � t t| �dd� � S )zDConstruct an object holding a date value from the given ticks value.Nr )r rD ��ticksrU rU rX r � r c C rf )zDConstruct an object holding a time value from the given ticks value.r rp )r rD rg rU rU rX r ri r c C rf )zDConstruct an object holding a time stamp from the given ticks value.Nrp )r rD rg rU rU rX r ri r c @ s e Zd ZdZdS )r zDConstruct an object capable of holding a binary (long) string value.N)r_ r` ra r� rU rU rU rX r s r c C s t | ||||d�S )z2Construct an object holding a time interval value.)r� r� r� r� )rB r� rU rU rX r s �r c @ s4 e Zd ZdZed�Zed�Zedd� �Zdd� Z dS ) r z(Wrapper class for marking hstore values.z^[Nn][Uu][Ll][Ll]$|[ ,=>]z(["\\])c C s@ |d u rdS |s dS | j �|�}| j�d|�}|r d|f }|S )Nr� z""z\\\1ro )� _re_quote�search� _re_escape�sub)r] �srz rU rU rX r� ' s z Hstore._quotec s" | j � d�� fdd�| �� D ��S )Nr� c 3 s( � | ]\}}d � |�� |�f V qdS )z%s=>%sNrU )r� �kr� r� rU rX r� 5 s �& z!Hstore.__str__.<locals>.<genexpr>)r� r� r@ rV rU r� rX �__str__3 s zHstore.__str__N) r_ r` ra r� �regexrj rl r_ r� rp rU rU rU rX r ! s r c @ s" e Zd ZdZddd�Zdd� ZdS )r z?Construct a wrapper for holding an object serializable to JSON.Nc C s || _ |pt| _d S rT )�obj� jsonencode�encode)rW rr rt rU rU rX r� ; s z Json.__init__c C s | j }t|t�r |S | �|�S rT )rr r( r8 rt )rW rr rU rU rX rp ? s z Json.__str__rT )r_ r` ra r� r� rp rU rU rU rX r 8 s r c @ s$ e Zd ZdZdd� Zdd� ZeZdS )r z5Construct a wrapper for holding a literal SQL string.c C s || _ d S rT �r� )rW r� rU rU rX r� I r� zLiteral.__init__c C r� rT ru rV rU rU rX rp L r� zLiteral.__str__N)r_ r` ra r� r� rp r� rU rU rU rX r F s r �__main__zPyGreSQL versionr� )rb rT r% )r r r N)r r r r N)r r r r )�r� � __future__r r �_pg� ImportError�os�sysr� � version_info�environr� �pathsep�path�existsr� �add_dll_directory�abspathr= r> �__all__rA r? r@ rB rC rD �decimalrE r$ r( r �mathrF rG �collections.abcrH � collectionsrJ �keywordrK � functoolsrL �rerM rq r rN rJ rO rs rH � NameErrorr� r� r) r8 r� rP rQ �_threadrR r6 r9 r8 r; �inspectr� r� r� r� �utcr� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r r� r� r� r r rN r: r; r< rS rY r` ra ry r0 r r� r� r� r� r| r r� r r7 rB � frozensetr rX 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 r r r r r r r_ �printrU rU rU rX �<module> sr 8 ����� � � � � ��U �� � %���� ;} %^ F� �A � �
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