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How to avoid "RuntimeError: dictionary changed size during iteration" error?（14个答案）
2天前关闭。
我想从嵌套dict中删除空dict

input = ss = {"a":"12","b":{"f":"34","z":{}}}

def recurfun(dict_data):
    for key,values in ss.items():
        if isinstance(values, dict) and values == {}:
            del ss[key]
        if isinstance(values, dict):
            recurfun(values)
    return ss
recurfun(ss)

错误消息为"迭代期间字典大小发生变化"

output_should_be = {"a":"12","b":{"f":"34"}}