ConfirmType

Uses the parameters:

subclass:

The class or a tuple of classes; the item must be an instance of the class or a subclass.

type:

A type or tuple of types (or classes); the item must be of the exact class or type. Subclasses are not allowed.

Examples:

>>> cint = ConfirmType(subclass=int)
>>> cint.to_python(True)
True
>>> cint.to_python('1')
Traceback (most recent call last):
    ...
Invalid: '1' is not a subclass of <type 'int'>
>>> cintfloat = ConfirmType(subclass=(float, int))
>>> cintfloat.to_python(1.0), cintfloat.from_python(1.0)
(1.0, 1.0)
>>> cintfloat.to_python(1), cintfloat.from_python(1)
(1, 1)
>>> cintfloat.to_python(None)
Traceback (most recent call last):
    ...
Invalid: None is not a subclass of one of the types <type 'float'>, <type 'int'>
>>> cint2 = ConfirmType(type=int)
>>> cint2(accept_python=False).from_python(True)
Traceback (most recent call last):
    ...
Invalid: True must be of the type <type 'int'>

Messages

badType:

The input must be a string (not a %(type)s: %(value)r)

empty:

Please enter a value

inSubclass:

%(object)r is not a subclass of one of the types %(subclassList)s

inType:

%(object)r must be one of the types %(typeList)s

noneType:

The input must be a string (not None)

subclass:

%(object)r is not a subclass of %(subclass)s

type:

%(object)r must be of the type %(type)s