DirtyDicts.py

class DirtyBase(object):

    def __init__(self, *a, **k):
        super(DirtyBase, self).__init__(*a, **k)
        self.dirty = False

    def __setitem__(self, *a, **k):
        self.mark_dirty()
        super(DirtyBase, self).__setitem__(*a, **k)

    def __delitem__(self, *a, **k):
        self.mark_dirty()
        super(DirtyBase, self).__delitem__(*a, **k)

    def mark_clean(self):
        self.dirty = False

    def mark_dirty(self):
        self.dirty = True


class DirtyDict(DirtyBase, dict):

    def clear(self, *a, **k):
        self.mark_dirty()
        super(DirtyDict, self).clear(*a, **k)

    def pop(self, *a, **k):
        self.mark_dirty()
        super(DirtyDict, self).pop(*a, **k)

    def popitem(self, *a, **k):
        self.mark_dirty()
        super(DirtyDict, self).popitem(*a, **k)

    def setdefault(self, *a, **k):
        self.mark_dirty()
        super(DirtyDict, self).setdefault(*a, **k)

    def update(self, *a, **k):
        self.mark_dirty()
        super(DirtyDict, self).update(*a, **k)


class DirtyList(DirtyBase, list):

    def append(self, *a, **k):
        self.mark_dirty()
        super(DirtyList, self).append(*a, **k)

    def extend(self, *a, **k):
        self.mark_dirty()
        super(DirtyList, self).extend(*a, **k)

    def insert(self, *a, **k):
        self.mark_dirty()
        super(DirtyList, self).insert(*a, **k)

    def remove(self, *a, **k):
        self.mark_dirty()
        super(DirtyList, self).remove(*a, **k)

    def pop(self, *a, **k):
        self.mark_dirty()
        super(DirtyList, self).pop(*a, **k)

    def sort(self, *a, **k):
        self.mark_dirty()
        super(DirtyList, self).sort(*a, **k)

    def reverse(self, *a, **k):
        self.mark_dirty()
        super(DirtyList, self).reverse(*a, **k)