Verifies property is of expected type.
google.appengine.api.validation.TYPE_FLOAT(
value, key='???'
)
Can optionally convert value if it is not of the expected type.
It is possible to specify a required field of a specific type in shorthand by merely providing the type. This method is slightly less efficient than providing an explicit type but is not significant unless parsing a large amount of information:
class Person(Validated):
ATTRIBUTES = {'name': unicode,
'age': int,
}
However, in most instances it is best to use the type constants:
class Person(Validated):
ATTRIBUTES = {'name': TypeUnicode,
'age': TypeInt,
}