lsst.afw.table._schema Namespace Reference

Classes
class	Field
class	Key
class	Schema
class	SchemaItem

Functions
	_registerInstantiations (abc, types)
	makeSchemaFromFields (fields)

Variables
dict	_dtypes

Function Documentation

_registerInstantiations()

lsst.afw.table._schema._registerInstantiations ( abc, types )

protected

Iterate over a private dict (filled by template instantiations in C++)
to register template instantiations a TemplateMeta ABCs.

If an entry for the type string exists in _dtypes, we use that instead of
the string as the key, and use the string as an alias.

Definition at line 61 of file _schema.py.

def _registerInstantiations(abc, types):
    """Iterate over a private dict (filled by template instantiations in C++)
    to register template instantiations a TemplateMeta ABCs.
 
    If an entry for the type string exists in _dtypes, we use that instead of
    the string as the key, and use the string as an alias.
    """
    for k, v in types.items():
        dtype = _dtypes.get(k, None)
        if dtype is not None:
            abc.register(dtype, v)
            abc.alias(k, v)
        else:
            abc.register(k, v)
 
 
# _Key, _Field, and _SchemaItem are {str: class} dicts populated by the C++
# wrappers.  The keys are a superset of those in _dtypes.

makeSchemaFromFields()

lsst.afw.table._schema.makeSchemaFromFields

(

fields

)

Create a Schema from a sequence of Fields. For pickle support.

Parameters
----------
fields : `tuple` ['lsst.afw.table.Field']
    The fields to construct the new Schema from.

Returns
-------
schema : `lsst.afw.table.Schema`
    The constructed Schema.

Definition at line 246 of file _schema.py.

def makeSchemaFromFields(fields):
    """Create a Schema from a sequence of Fields. For pickle support.
 
    Parameters
    ----------
    fields : `tuple` ['lsst.afw.table.Field']
        The fields to construct the new Schema from.
 
    Returns
    -------
    schema : `lsst.afw.table.Schema`
        The constructed Schema.
    """
    schema = Schema()
    for field in fields:
        schema.addField(field)
    return schema

Variable Documentation

_dtypes

dict lsst.afw.table._schema._dtypes

protected

Initial value:

=  {
    "String": str,
    "B": np.uint8,
    "U": np.uint16,
    "I": np.int32,
    "L": np.int64,
    "F": np.float32,
    "D": np.float64,
    "Angle": lsst.geom.Angle,
}

Definition at line 37 of file _schema.py.