Package konval :: Module containerval :: Class ToLength

Class ToLength

                 object --+    
                          |    
basevalidator.BaseValidator --+
                              |
                             ToLength

Convert a sequence to its length.

For example:

>>> v = ToLength()
>>> v("abc")
3
>>> v([1, 2])
2

Instance Methods

[hide private]

convert_value(self, value)
Transform a value to the desired form.

source code

Inherited from basevalidator.BaseValidator: __call__, convert, make_conversion_error_msg, make_validation_error_msg, raise_conversion_error, raise_validation_error, validate, validate_value

Inherited from object: __delattr__, __format__, __getattribute__, __hash__, __init__, __new__, __reduce__, __reduce_ex__, __repr__, __setattr__, __sizeof__, __str__, __subclasshook__

Properties

[hide private]

Inherited from object: __class__

Method Details

[hide private]

convert_value(self, value)

source code

Transform a value to the desired form.

This is the workhorse method that is called by convert to transform passed values. As such, errors are signalled by throwing a meaningful exception. This is one of the obvious and easiest places to customize behaviour by overriding in a subclass.

Parameters:

value - value to be transformed

Returns:

the transformed value

Overrides: basevalidator.BaseValidator.convert_value

(inherited documentation)