import six

from .utils import validator

@validator

def truthy(value):

"""

Validate that given value is not a falsey value.

This validator is based on `WTForms DataRequired validator`_.

.. _WTForms DataRequired validator:

https://github.com/wtforms/wtforms/blob/master/wtforms/validators.py

Examples::

>>> truthy(1)

True

>>> truthy('someone')

True

>>> truthy(0)

ValidationFailure(func=truthy, args={'value': 0})

>>> truthy(' ')

ValidationFailure(func=truthy, args={'value': ' '})

>>> truthy(False)

ValidationFailure(func=truthy, args={'value': False})

>>> truthy(None)

ValidationFailure(func=truthy, args={'value': None})

.. versionadded:: 0.2

"""

return (

value and

(not isinstance(value, six.string_types) or value.strip())

)