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Module « sqlalchemy »

Fonction engine_from_config - module sqlalchemy

Signature de la fonction engine_from_config

def engine_from_config(configuration: 'Dict[str, Any]', prefix: 'str' = 'sqlalchemy.', **kwargs: 'Any') -> 'Engine' 

Description

help(sqlalchemy.engine_from_config)

Create a new Engine instance using a configuration dictionary.

The dictionary is typically produced from a config file.

The keys of interest to ``engine_from_config()`` should be prefixed, e.g.
``sqlalchemy.url``, ``sqlalchemy.echo``, etc.  The 'prefix' argument
indicates the prefix to be searched for.  Each matching key (after the
prefix is stripped) is treated as though it were the corresponding keyword
argument to a :func:`_sa.create_engine` call.

The only required key is (assuming the default prefix) ``sqlalchemy.url``,
which provides the :ref:`database URL <database_urls>`.

A select set of keyword arguments will be "coerced" to their
expected type based on string values.    The set of arguments
is extensible per-dialect using the ``engine_config_types`` accessor.

:param configuration: A dictionary (typically produced from a config file,
    but this is not a requirement).  Items whose keys start with the value
    of 'prefix' will have that prefix stripped, and will then be passed to
    :func:`_sa.create_engine`.

:param prefix: Prefix to match and then strip from keys
    in 'configuration'.

:param kwargs: Each keyword argument to ``engine_from_config()`` itself
    overrides the corresponding item taken from the 'configuration'
    dictionary.  Keyword arguments should *not* be prefixed.

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