<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def breadcrumb(self):
 """ Get the category hierarchy leading up to this category, including root and self. For example, path/to/long/category will return a list containing Category('path'), Category('path/to'), and Category('path/to/long'). """

        ret = []
        here = self
        while here:
            ret.append(here)
            here = here.parent
        return list(reversed(ret))