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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _breadcrumbs(path):
 """Return breadcrumb dict from path."""


    full = None
    crumbs = []
    for part in path_yield(path):
        full = path_join(full, part) if full else part
        crumbs.append((full, part))

    return crumbs