Source code for validators.truthy

import six

from .utils import validator


@validator
[docs]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()) )