import os

def find_nearest(path, test):
    path = os.path.abspath(path)

    while True:
        parent_path = os.path.dirname(path)
        for entry in os.listdir(path):
            if test(entry):
                return path

        if parent_path == path:
            return None

        path = parent_path

def merge_dicts (dicts):
    fusion = {}
    for source in dicts:
        if not source:
            continue
        
        for key, value in source.items():
            if isinstance(value, dict):
                value = merge_dicts([fusion.get(key, None), value])
            fusion[key] = value
    return fusion