Docs for IS_EXPR

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Description

<type 'type'> extends (<class 'gluon.validators.Validator'>,)


    Example:
        Used as::

            INPUT(_type='text', _name='name',
                requires=IS_EXPR('5 < int(value) < 10'))

    The argument of IS_EXPR must be python condition::

        >>> IS_EXPR('int(value) < 2')('1')
        ('1', None)

        >>> IS_EXPR('int(value) < 2')('2')
        ('2', 'invalid expression')

Attributes


IS_EXPR.__call__	<type 'instancemethod'> belongs to class <type 'instancemethod'>

IS_EXPR.__class__	<type 'type'> extends (<type 'object'>,) belongs to class <type 'type'> type(object) -> the object's type type(name, bases, dict) -> a new type

IS_EXPR.__delattr__	<type 'wrapper_descriptor'> belongs to class <type 'wrapper_descriptor'> x.__delattr__('name') <==> del x.name

IS_EXPR.__dict__	<type 'dictproxy'> belongs to class <type 'dictproxy'>

IS_EXPR.__doc__	<type 'str'> belongs to class <type 'str'> str(object='') -> string Return a nice string representation of the object. If the argument is a string, the return value is the same object.

IS_EXPR.__format__	<type 'method_descriptor'> belongs to class <type 'method_descriptor'> default object formatter

IS_EXPR.__getattribute__	<type 'wrapper_descriptor'> belongs to class <type 'wrapper_descriptor'> x.__getattribute__('name') <==> x.name

IS_EXPR.__hash__	<type 'wrapper_descriptor'> belongs to class <type 'wrapper_descriptor'> x.__hash__() <==> hash(x)

IS_EXPR.__init__	<type 'instancemethod'> belongs to class <type 'instancemethod'>

IS_EXPR.__module__	<type 'str'> belongs to class <type 'str'> str(object='') -> string Return a nice string representation of the object. If the argument is a string, the return value is the same object.

IS_EXPR.__new__	<type 'builtin_function_or_method'> belongs to class <type 'builtin_function_or_method'> T.__new__(S, ...) -> a new object with type S, a subtype of T

IS_EXPR.__reduce__	<type 'method_descriptor'> belongs to class <type 'method_descriptor'> helper for pickle

IS_EXPR.__reduce_ex__	<type 'method_descriptor'> belongs to class <type 'method_descriptor'> helper for pickle

IS_EXPR.__repr__	<type 'wrapper_descriptor'> belongs to class <type 'wrapper_descriptor'> x.__repr__() <==> repr(x)

IS_EXPR.__setattr__	<type 'wrapper_descriptor'> belongs to class <type 'wrapper_descriptor'> x.__setattr__('name', value) <==> x.name = value

IS_EXPR.__sizeof__	<type 'method_descriptor'> belongs to class <type 'method_descriptor'> __sizeof__() -> int size of object in memory, in bytes

IS_EXPR.__str__	<type 'wrapper_descriptor'> belongs to class <type 'wrapper_descriptor'> x.__str__() <==> str(x)

IS_EXPR.__subclasshook__	<type 'builtin_function_or_method'> belongs to class <type 'builtin_function_or_method'> Abstract classes can override this to customize issubclass(). This is invoked early on by abc.ABCMeta.__subclasscheck__(). It should return True, False or NotImplemented. If it returns NotImplemented, the normal algorithm is used. Otherwise, it overrides the normal algorithm (and the outcome is cached).

IS_EXPR.__weakref__	<type 'getset_descriptor'> belongs to class <type 'getset_descriptor'> list of weak references to the object (if defined)

IS_EXPR.formatter	<type 'instancemethod'> belongs to class <type 'instancemethod'> For some validators returns a formatted version (matching the validator) of value. Otherwise just returns the value.