openpyxl.utils.bound_dictionary module

class openpyxl.utils.bound_dictionary.BoundDictionary(reference=None, *args, **kw)

Bases: defaultdict

A default dictionary where elements are tightly coupled.

The factory method is responsible for binding the parent object to the child.

If a reference attribute is assigned then child objects will have the key assigned to this.

Otherwise it’s just a defaultdict.