Module « sqlalchemy »

Classe « Float »

Informations générales

Héritage

builtins.object
    Traversible
        TypeEngine
    builtins.object
        _LookupExpressionAdapter
            Numeric
                Float

Définition

class Float(Numeric):

Description _{[extrait de Float.__doc__]}

Type representing floating point types, such as ``FLOAT`` or ``REAL``.

    This type returns Python ``float`` objects by default, unless the
    :paramref:`.Float.asdecimal` flag is set to True, in which case they
    are coerced to ``decimal.Decimal`` objects.

    .. note::

        The :class:`.Float` type is designed to receive data from a database
        type that is explicitly known to be a floating point type
        (e.g. ``FLOAT``, ``REAL``, others)
        and not a decimal type (e.g. ``DECIMAL``, ``NUMERIC``, others).
        If the database column on the server is in fact a Numeric
        type, such as ``DECIMAL`` or ``NUMERIC``, use the :class:`.Numeric`
        type or a subclass, otherwise numeric coercion between
        ``float``/``Decimal`` may or may not function as expected.

    

Constructeur(s)

Signature du constructeur	Description
__init__(self, precision=None, asdecimal=False, decimal_return_scale=None)

Liste des opérateurs

Opérateurs hérités de la classe object

__eq__, __ge__, __gt__, __le__, __lt__, __ne__

Méthodes héritées de la classe Numeric

__init_subclass__, __subclasshook__, bind_processor, get_dbapi_type, literal_processor

Méthodes héritées de la classe TypeEngine

__repr__, __str__, adapt, as_generic, bind_expression, coerce_compared_value, column_expression, Comparator, comparator_factory, compare_against_backend, compare_values, compile, copy, copy_value, dialect_impl, evaluates_none, with_variant

Méthodes héritées de la classe Traversible

__class_getitem__, get_children

Méthodes héritées de la classe object

__delattr__, __dir__, __format__, __getattribute__, __hash__, __reduce__, __reduce_ex__, __setattr__, __sizeof__