PostgreSQL 7.3.4 Documentation
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# open

## Name

open -- open a large object

## Synopsis

    open(mode)

### Parameters

mode

  open mode definition (integer).

### Return Type

none

### Exceptions

`TypeError`

  Bad parameter type, or too many arguments.

`IOError`

  Already opened object, or open error.

`pg.error`

  Invalid connection.

## Description

`open()` method opens a large object for reading/writing, in the same way than the Unix `open()` function. The mode value can be obtained by OR-ing the constants defined in the pg module (INV_READ, INV_WRITE).

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