pgdbCnx – The connection object¶
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class
pgdb.pgdbCnx¶
These connection objects respond to the following methods.
Note that pgdb.pgdbCnx objects also implement the context manager protocol,
i.e. you can use them in a with statement.
close – close the connection¶
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pgdbCnx.close()¶ Close the connection now (rather than whenever it is deleted)
Return type: None
The connection will be unusable from this point forward; an Error
(or subclass) exception will be raised if any operation is attempted with
the connection. The same applies to all cursor objects trying to use the
connection. Note that closing a connection without committing the changes
first will cause an implicit rollback to be performed.
commit – commit the connection¶
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pgdbCnx.commit()¶ Commit any pending transaction to the database
Return type: None
Note that connections always use a transaction, there is no auto-commit.
rollback – roll back the connection¶
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pgdbCnx.rollback()¶ Roll back any pending transaction to the database
Return type: None
This method causes the database to roll back to the start of any pending transaction. Closing a connection without committing the changes first will cause an implicit rollback to be performed.
cursor – return a new cursor object¶
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pgdbCnx.cursor()¶ Return a new cursor object using the connection
Returns: a connection object Return type: pgdbCursor
This method returns a new pgdbCursor object that can be used to
operate on the database in the way described in the next section.
