Source code for ramverk.utils

from functools import update_wrapper


class Bunch(dict):
    """Attribute-accessible :class:`dict`."""

    def __getattr__(self, name):
        try:
            return self[name]
        except KeyError:
            raise AttributeError

    __setattr__ = dict.__setitem__
    __delattr__ = dict.__delitem__


class request_property(object):
    """Like :class:`~werkzeug.utils.cached_property` but cached in the
    object's `local` attribute, which in applications are cleared for every
    request. Can be used to create lazily cached request-local
    properties."""

    def __init__(self, method):
        update_wrapper(self, method)
        self.method = method

    def __get__(self, instance, owner):
        if instance is None:
            return self
        name = self.method.__name__
        if not hasattr(instance.local, name):
            setattr(instance.local, name, self.method(instance))
        return getattr(instance.local, name)