Module « io » Python 3.11.3

Classe « IOBase »

Informations générales

Héritage

builtins.object
    _IOBase
        IOBase

Définition

class IOBase(_IOBase):

help(IOBase)

The abstract base class for all I/O classes.

This class provides dummy implementations for many methods that
derived classes can override selectively; the default implementations
represent a file that cannot be read, written or seeked.

Even though IOBase does not declare read, readinto, or write because
their signatures will vary, implementations and clients should
consider those methods part of the interface. Also, implementations
may raise UnsupportedOperation when operations they do not support are
called.

The basic type used for binary data read from or written to a file is
bytes. Other bytes-like objects are accepted as method arguments too.
In some cases (such as readinto), a writable object is required. Text
I/O classes work with str data.

Note that calling any method (except additional calls to close(),
which are ignored) on a closed stream should raise a ValueError.

IOBase (and its subclasses) support the iterator protocol, meaning
that an IOBase object can be iterated over yielding the lines in a
stream.

IOBase also supports the :keyword:`with` statement. In this example,
fp is closed after the suite of the with statement is complete:

with open('spam.txt', 'r') as fp:
    fp.write('Spam and eggs!')

Constructeur(s)

Signature du constructeur	Description
__init__(self, /, *args, **kwargs)	Initialize self. See help(type(self)) for accurate signature. [extrait de __init__.__doc__]

Liste des attributs statiques

Attributs statiques hérités de la classe _IOBase

closed

Liste des opérateurs

Opérateurs hérités de la classe object

__eq__, __ge__, __gt__, __le__, __lt__, __ne__

Méthodes héritées de la classe _IOBase

__del__, __enter__, __exit__, __init_subclass__, __iter__, __next__, __subclasshook__, close, fileno, flush, isatty, readable, readline, readlines, seek, seekable, tell, truncate, writable, writelines

Méthodes héritées de la classe object

__delattr__, __dir__, __format__, __getattribute__, __getstate__, __hash__, __reduce__, __reduce_ex__, __repr__, __setattr__, __sizeof__, __str__