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Cursors are created by the connection. Cursors created from the same connection are not isolated, i. See also rollback and commit methods.

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Cursors are not thread safe: See Thread and process safety for details. It is a sequence of Column instances, each one describing one result column in order. For further details and other attributes available check the Column documentation.

None for other types. Changed in version 2. The cursor will be unusable from this point forward; an InterfaceError will be raised if any Python expert is attempted with the cursor.

New in version 2. Read-only attribute returning a reference to the connection object on which the cursor was created. See Server side cursors. If True, the cursor can be scrolled backwards, if False it is never scrollable. Note set the value before calling execute or use the connection.

See Server side cursors Note set the value before calling execute or use the connection.

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Parameters may be provided as sequence or mapping and will be bound to variables in the operation. See Passing parameters to SQL queries. The method returns None. The function is mostly useful for commands that update the database: Parameters are bounded to the query using the same rules described in the execute method.

Warning In its current implementation this method is not faster than executing execute in a loop. For better performance you can use the functions described in Fast execution helpers. The sequence of parameters must contain one entry for each argument that the procedure expects.

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Overloaded procedures are supported. Named parameters can be used by supplying the parameters as a dictionary. The procedure may provide a result set as output.

The string returned is exactly the one that would be sent to the database running the execute method or similar.

The returned string is always a bytes string. It currently does nothing but it is safe to call it. Results retrieval methods The following methods are used to read data from the database after an execute call.

Note cursor objects are iterable, so, instead of calling explicitly fetchone in a loop, the object itself can be used: Previously only one record was fetched per roundtrip, resulting in a large overhead.

An empty list is returned when no more rows are available. The number of rows to fetch per call is specified by the parameter. The method should try to fetch as many rows as indicated by the size parameter.

If this is not possible due to the specified number of rows not being available, fewer rows may be returned: Note there are performance considerations involved with the size parameter. For optimal performance, it is usually best to use the arraysize attribute.The Monty Python comedy troupe is rightly praised as one of the most brilliant, absurdist and hilarious comedy groups of all time.

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