werkzeug.datastructures.TypeConversionDict

Works like a regular dict but the get method can perform type conversions. MultiDict and CombinedMultiDict are subclasses of this class and provide the same feature.

New in version 0.5.

def get(self, key, default=None, type=None):

overridden in werkzeug.datastructures.CombinedMultiDict

Return the default value if the requested data doesn't exist. If type is provided and is a callable it should convert the value, return it or raise a ValueError if that is not possible. In this case the function will return the default as if the value was not found:

>>> d = TypeConversionDict(foo='42', bar='blub')
>>> d.get('foo', type=int)
42
>>> d.get('bar', -1, type=int)
-1

Parameters
key	The key to be looked up.
default	The default value to be returned if the key can't be looked up. If not further specified `None` is returned.
type	A callable that is used to cast the value in the `MultiDict`. If a `ValueError` is raised by this callable the default value is returned.