Module « pickle » Python 3.11.3

Classe « Pickler »

Informations générales

Héritage

builtins.object
    Pickler

Définition

class Pickler(builtins.object):

help(Pickler)

This takes a binary file for writing a pickle data stream.

The optional *protocol* argument tells the pickler to use the given
protocol; supported protocols are 0, 1, 2, 3, 4 and 5.  The default
protocol is 4. It was introduced in Python 3.4, and is incompatible
with previous versions.

Specifying a negative protocol version selects the highest protocol
version supported.  The higher the protocol used, the more recent the
version of Python needed to read the pickle produced.

The *file* argument must have a write() method that accepts a single
bytes argument. It can thus be a file object opened for binary
writing, an io.BytesIO instance, or any other custom object that meets
this interface.

If *fix_imports* is True and protocol is less than 3, pickle will try
to map the new Python 3 names to the old module names used in Python
2, so that the pickle data stream is readable with Python 2.

If *buffer_callback* is None (the default), buffer views are
serialized into *file* as part of the pickle stream.

If *buffer_callback* is not None, then it can be called any number
of times with a buffer view.  If the callback returns a false value
(such as None), the given buffer is out-of-band; otherwise the
buffer is serialized in-band, i.e. inside the pickle stream.

It is an error if *buffer_callback* is not None and *protocol*
is None or smaller than 5.

Constructeur(s)

Signature du constructeur	Description
__new__(args, *kwargs)	Create and return a new object. See help(type) for accurate signature. _{[extrait de __new__.__doc__]}
__init__(self, /, args, *kwargs)	Initialize self. See help(type(self)) for accurate signature. _{[extrait de __init__.__doc__]}

Liste des attributs statiques

Nom de l'attribut	Valeur
bin
dispatch_table
fast
memo
persistent_id

Liste des opérateurs

Opérateurs hérités de la classe object

__eq__, __ge__, __gt__, __le__, __lt__, __ne__

Liste des méthodes

Toutes les méthodes Méthodes d'instance Méthodes statiques

Signature de la méthode	Description
__sizeof__(self)	Returns size in memory, in bytes. _{[extrait de __sizeof__.__doc__]}
clear_memo(self)	Clears the pickler's "memo". _{[extrait de clear_memo.__doc__]}
dump(self, obj)	Write a pickled representation of the given object to the open file. _{[extrait de dump.__doc__]}