Python 3.9 is now generally available.

google.appengine.ext.ndb.GenericProperty

A Property whose value can be (almost) any basic type.

Inherits From: Property, ModelAttribute, expected_type

This is mainly used for Expando and for orphans (values present in Cloud Datastore but not represented in the Model subclass) but can also be used explicitly for properties with dynamically-typed values.

This supports compressed=True, which is only effective for str values (not for unicode), and implies indexed=False.

Methods

IN

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Comparison operator for the IN comparison operator.

The Python IN operator cannot be overloaded in the way we want to, so we define a method. For example:

Employee.query(Employee.rank.IN([4, 5, 6]))

Note that the method is called ._IN() but may normally be invoked as .IN(); ._IN() is provided for the case you have a StructuredProperty with a model that has a Property named IN.

__eq__

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Return a FilterNode instance representing the = comparison.

__ge__

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Return a FilterNode instance representing the >= comparison.

__gt__

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Return a FilterNode instance representing the > comparison.

__le__

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Return a FilterNode instance representing the <= comparison.

__lt__

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Return a FilterNode instance representing the < comparison.

__ne__

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Return a FilterNode instance representing the != comparison.

__neg__

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Return a descending sort order on this Property.

For example:

Employee.query().order(-Employee.rank)

__pos__

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Returns an ascending sort order on this property.

Note that this is redundant but provided for consistency with __neg__. For example, the following two are equivalent:

Employee.query().order(+Employee.rank)
Employee.query().order(Employee.rank)