{"id":986910,"date":"2024-12-27T07:49:00","date_gmt":"2024-12-26T23:49:00","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/986910.html"},"modified":"2024-12-27T07:49:02","modified_gmt":"2024-12-26T23:49:02","slug":"python-%e5%a6%82%e4%bd%95%e5%88%9b%e5%bb%ba%e5%ad%97%e5%85%b8%e7%b1%bb","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/986910.html","title":{"rendered":"python \u5982\u4f55\u521b\u5efa\u5b57\u5178\u7c7b"},"content":{"rendered":"

\"python<\/p>\n

\u521b\u5efa\u4e00\u4e2a\u5b57\u5178\u7c7b\u662fPython\u7f16\u7a0b\u4e2d\u7684\u4e00\u4e2a\u5e38\u89c1\u4efb\u52a1\uff0c\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u60a8\u53ef\u4ee5\u66f4\u597d\u5730\u7ba1\u7406\u548c\u64cd\u4f5c\u6570\u636e\u3002\u5728Python\u4e2d\uff0c\u521b\u5efa\u5b57\u5178\u7c7b\u7684\u5173\u952e\u6b65\u9aa4\u5305\u62ec\u5b9a\u4e49\u7c7b\u3001\u521d\u59cb\u5316\u65b9\u6cd5\u3001\u6dfb\u52a0\u5b57\u5178\u64cd\u4f5c\u65b9\u6cd5\u3001\u652f\u6301\u5b57\u5178\u7684\u589e\u5220\u67e5\u6539<\/strong>\u7b49\u3002\u4e0b\u9762\uff0c\u6211\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u5982\u4f55\u5b9e\u73b0\u8fd9\u4e9b\u6b65\u9aa4\u3002<\/p>\n<\/p>\n

\u9996\u5148\uff0c\u901a\u8fc7\u5b9a\u4e49\u4e00\u4e2a\u7c7b\u6765\u5c01\u88c5\u5b57\u5178\u7684\u529f\u80fd\u3002\u7c7b\u662f\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b\u7684\u57fa\u672c\u5355\u4f4d\uff0c\u5b83\u4eec\u53ef\u4ee5\u5c01\u88c5\u6570\u636e\uff08\u5c5e\u6027\uff09\u548c\u64cd\u4f5c\u6570\u636e\u7684\u65b9\u6cd5\u3002\u901a\u8fc7\u521b\u5efa\u4e00\u4e2a\u4e13\u95e8\u7528\u4e8e\u7ba1\u7406\u5b57\u5178\u7684\u7c7b\uff0c\u60a8\u53ef\u4ee5\u5bf9\u5b57\u5178\u7684\u884c\u4e3a\u8fdb\u884c\u66f4\u597d\u7684\u63a7\u5236\u548c\u6269\u5c55\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u5b9a\u4e49\u5b57\u5178\u7c7b<\/h3>\n<\/p>\n

\u5728Python\u4e2d\uff0c\u5b9a\u4e49\u4e00\u4e2a\u7c7b\u975e\u5e38\u7b80\u5355\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528class<\/code>\u5173\u952e\u5b57\u6765\u521b\u5efa\u4e00\u4e2a\u65b0\u7c7b\u3002\u5728\u8fd9\u4e2a\u7c7b\u4e2d\uff0c\u6211\u4eec\u5c06\u4f7f\u7528\u4e00\u4e2a\u5b57\u5178\u6765\u5b58\u50a8\u952e\u503c\u5bf9\u3002<\/p>\n<\/p>\n

class MyDictionary:<\/p>\n
    def __init__(self):<\/p>\n
        """\u521d\u59cb\u5316\u5b57\u5178"""<\/p>\n
        self.data = {}<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0cMyDictionary<\/code>\u7c7b\u7684\u521d\u59cb\u5316\u65b9\u6cd5__init__<\/code>\u521b\u5efa\u4e86\u4e00\u4e2a\u65b0\u7684\u7a7a\u5b57\u5178self.data<\/code>\uff0c\u7528\u6765\u5b58\u50a8\u6211\u4eec\u7684\u6570\u636e\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u6dfb\u52a0\u952e\u503c\u5bf9<\/h3>\n<\/p>\n
\u6dfb\u52a0\u952e\u503c\u5bf9\u662f\u5b57\u5178\u7c7b\u7684\u57fa\u672c\u529f\u80fd\u4e4b\u4e00\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5b9a\u4e49\u4e00\u4e2a\u65b9\u6cd5\u6765\u5b9e\u73b0\u8fd9\u4e00\u70b9\u3002<\/p>\n<\/p>\n
    def add(self, key, value):<\/p>\n
        """\u6dfb\u52a0\u952e\u503c\u5bf9"""<\/p>\n
        self.data[key] = value<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u65b9\u6cd5\u4e2d\uff0c\u6211\u4eec\u5c06\u6307\u5b9a\u7684\u952e\u548c\u503c\u6dfb\u52a0\u5230\u5b57\u5178\u4e2d\u3002\u5982\u679c\u952e\u5df2\u7ecf\u5b58\u5728\uff0c\u5219\u4f1a\u66f4\u65b0\u5176\u5bf9\u5e94\u7684\u503c\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u5220\u9664\u952e\u503c\u5bf9<\/h3>\n<\/p>\n
\u5b57\u5178\u7c7b\u8fd8\u9700\u8981\u652f\u6301\u5220\u9664\u952e\u503c\u5bf9\u7684\u64cd\u4f5c\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5b9a\u4e49\u4e00\u4e2a\u65b9\u6cd5\u6765\u5b9e\u73b0\u8fd9\u4e00\u70b9\u3002<\/p>\n<\/p>\n
    def remove(self, key):<\/p>\n
        """\u5220\u9664\u952e\u503c\u5bf9"""<\/p>\n
        if key in self.data:<\/p>\n
            del self.data[key]<\/p>\n
        else:<\/p>\n
            print(f"Key '{key}' not found.")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u65b9\u6cd5\u4e2d\uff0c\u6211\u4eec\u9996\u5148\u68c0\u67e5\u952e\u662f\u5426\u5b58\u5728\u4e8e\u5b57\u5178\u4e2d\u3002\u5982\u679c\u5b58\u5728\uff0c\u6211\u4eec\u5c31\u5220\u9664\u5b83\uff1b\u5982\u679c\u4e0d\u5b58\u5728\uff0c\u6211\u4eec\u8f93\u51fa\u4e00\u6761\u6d88\u606f\u3002<\/p>\n<\/p>\n
\u56db\u3001\u67e5\u627e\u503c<\/h3>\n<\/p>\n
\u67e5\u627e\u7279\u5b9a\u952e\u5bf9\u5e94\u7684\u503c\u662f\u5b57\u5178\u7684\u5e38\u89c1\u64cd\u4f5c\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5b9a\u4e49\u4e00\u4e2a\u65b9\u6cd5\u6765\u5b9e\u73b0\u8fd9\u4e00\u70b9\u3002<\/p>\n<\/p>\n
    def get(self, key):<\/p>\n
        """\u83b7\u53d6\u952e\u5bf9\u5e94\u7684\u503c"""<\/p>\n
        return self.data.get(key, None)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u65b9\u6cd5\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u5b57\u5178\u7684get<\/code>\u65b9\u6cd5\u6765\u83b7\u53d6\u6307\u5b9a\u952e\u7684\u503c\u3002\u5982\u679c\u952e\u4e0d\u5b58\u5728\uff0c\u5219\u8fd4\u56deNone<\/code>\u3002<\/p>\n<\/p>\n
\u4e94\u3001\u66f4\u65b0\u952e\u503c\u5bf9<\/h3>\n<\/p>\n
\u66f4\u65b0\u952e\u503c\u5bf9\u7684\u529f\u80fd\u5728\u5b57\u5178\u64cd\u4f5c\u4e2d\u4e5f\u5f88\u5e38\u89c1\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5b9a\u4e49\u4e00\u4e2a\u65b9\u6cd5\u6765\u5b9e\u73b0\u8fd9\u4e00\u70b9\u3002<\/p>\n<\/p>\n
    def update(self, key, value):<\/p>\n
        """\u66f4\u65b0\u952e\u503c\u5bf9"""<\/p>\n
        if key in self.data:<\/p>\n
            self.data[key] = value<\/p>\n
        else:<\/p>\n
            print(f"Key '{key}' not found.")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u4e2a\u65b9\u6cd5\u7c7b\u4f3c\u4e8e\u6dfb\u52a0\u952e\u503c\u5bf9\u7684\u65b9\u6cd5\uff0c\u4f46\u5b83\u9996\u5148\u68c0\u67e5\u952e\u662f\u5426\u5b58\u5728\u4e8e\u5b57\u5178\u4e2d\u3002<\/p>\n<\/p>\n
\u516d\u3001\u83b7\u53d6\u5b57\u5178\u7684\u6240\u6709\u952e<\/h3>\n<\/p>\n
\u6709\u65f6\u6211\u4eec\u9700\u8981\u83b7\u53d6\u5b57\u5178\u4e2d\u6240\u6709\u7684\u952e\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5b9a\u4e49\u4e00\u4e2a\u65b9\u6cd5\u6765\u5b9e\u73b0\u8fd9\u4e00\u70b9\u3002<\/p>\n<\/p>\n
    def keys(self):<\/p>\n
        """\u83b7\u53d6\u6240\u6709\u7684\u952e"""<\/p>\n
        return list(self.data.keys())<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u4e2a\u65b9\u6cd5\u8fd4\u56de\u5b57\u5178\u4e2d\u6240\u6709\u952e\u7684\u5217\u8868\u3002<\/p>\n<\/p>\n
\u4e03\u3001\u83b7\u53d6\u5b57\u5178\u7684\u6240\u6709\u503c<\/h3>\n<\/p>\n
\u7c7b\u4f3c\u5730\uff0c\u6211\u4eec\u4e5f\u53ef\u4ee5\u83b7\u53d6\u5b57\u5178\u4e2d\u6240\u6709\u7684\u503c\u3002<\/p>\n<\/p>\n
    def values(self):<\/p>\n
        """\u83b7\u53d6\u6240\u6709\u7684\u503c"""<\/p>\n
        return list(self.data.values())<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u4e2a\u65b9\u6cd5\u8fd4\u56de\u5b57\u5178\u4e2d\u6240\u6709\u503c\u7684\u5217\u8868\u3002<\/p>\n<\/p>\n
\u516b\u3001\u6e05\u7a7a\u5b57\u5178<\/h3>\n<\/p>\n
\u6709\u65f6\u5019\uff0c\u6211\u4eec\u9700\u8981\u6e05\u7a7a\u5b57\u5178\u4e2d\u7684\u6240\u6709\u6570\u636e\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5b9a\u4e49\u4e00\u4e2a\u65b9\u6cd5\u6765\u5b9e\u73b0\u8fd9\u4e00\u70b9\u3002<\/p>\n<\/p>\n
    def clear(self):<\/p>\n
        """\u6e05\u7a7a\u5b57\u5178"""<\/p>\n
        self.data.clear()<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u4e2a\u65b9\u6cd5\u4f7f\u7528\u5b57\u5178\u7684clear<\/code>\u65b9\u6cd5\u6765\u79fb\u9664\u6240\u6709\u7684\u952e\u503c\u5bf9\u3002<\/p>\n<\/p>\n
\u4e5d\u3001\u68c0\u67e5\u5b57\u5178\u662f\u5426\u4e3a\u7a7a<\/h3>\n<\/p>\n
\u6700\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u63d0\u4f9b\u4e00\u4e2a\u65b9\u6cd5\u6765\u68c0\u67e5\u5b57\u5178\u662f\u5426\u4e3a\u7a7a\u3002<\/p>\n<\/p>\n
    def is_empty(self):<\/p>\n
        """\u68c0\u67e5\u5b57\u5178\u662f\u5426\u4e3a\u7a7a"""<\/p>\n
        return len(self.data) == 0<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u4e2a\u65b9\u6cd5\u901a\u8fc7\u68c0\u67e5\u5b57\u5178\u7684\u957f\u5ea6\u6765\u5224\u65ad\u5b83\u662f\u5426\u4e3a\u7a7a\u3002<\/p>\n<\/p>\n
\u5b8c\u6574\u4ee3\u7801<\/h3>\n<\/p>\n
\u4e0b\u9762\u662f\u5b8c\u6574\u7684MyDictionary<\/code>\u7c7b\u4ee3\u7801\uff1a<\/p>\n<\/p>\n
class MyDictionary:<\/p>\n
    def __init__(self):<\/p>\n
        """\u521d\u59cb\u5316\u5b57\u5178"""<\/p>\n
        self.data = {}<\/p>\n
    def add(self, key, value):<\/p>\n
        """\u6dfb\u52a0\u952e\u503c\u5bf9"""<\/p>\n
        self.data[key] = value<\/p>\n
    def remove(self, key):<\/p>\n
        """\u5220\u9664\u952e\u503c\u5bf9"""<\/p>\n
        if key in self.data:<\/p>\n
            del self.data[key]<\/p>\n
        else:<\/p>\n
            print(f"Key '{key}' not found.")<\/p>\n
    def get(self, key):<\/p>\n
        """\u83b7\u53d6\u952e\u5bf9\u5e94\u7684\u503c"""<\/p>\n
        return self.data.get(key, None)<\/p>\n
    def update(self, key, value):<\/p>\n
        """\u66f4\u65b0\u952e\u503c\u5bf9"""<\/p>\n
        if key in self.data:<\/p>\n
            self.data[key] = value<\/p>\n
        else:<\/p>\n
            print(f"Key '{key}' not found.")<\/p>\n
    def keys(self):<\/p>\n
        """\u83b7\u53d6\u6240\u6709\u7684\u952e"""<\/p>\n
        return list(self.data.keys())<\/p>\n
    def values(self):<\/p>\n
        """\u83b7\u53d6\u6240\u6709\u7684\u503c"""<\/p>\n
        return list(self.data.values())<\/p>\n
    def clear(self):<\/p>\n
        """\u6e05\u7a7a\u5b57\u5178"""<\/p>\n
        self.data.clear()<\/p>\n
    def is_empty(self):<\/p>\n
        """\u68c0\u67e5\u5b57\u5178\u662f\u5426\u4e3a\u7a7a"""<\/p>\n
        return len(self.data) == 0<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u901a\u8fc7\u8fd9\u4e2aMyDictionary<\/code>\u7c7b\uff0c\u60a8\u53ef\u4ee5\u8f7b\u677e\u5730\u7ba1\u7406\u952e\u503c\u5bf9\uff0c\u5e76\u5728\u5fc5\u8981\u65f6\u6269\u5c55\u5176\u529f\u80fd\u3002\u8fd9\u4e2a\u7c7b\u5c01\u88c5\u4e86\u5b57\u5178\u7684\u57fa\u672c\u64cd\u4f5c\uff0c\u4f7f\u4ee3\u7801\u66f4\u5177\u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
 \u5982\u4f55\u5728Python\u4e2d\u5b9a\u4e49\u4e00\u4e2a\u5b57\u5178\u7c7b\u4ee5\u5b9e\u73b0\u81ea\u5b9a\u4e49\u529f\u80fd\uff1f<\/strong>
\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u5b9a\u4e49\u4e00\u4e2a\u7c7b\u6765\u521b\u5efa\u4e00\u4e2a\u5b57\u5178\u7c7b\u3002\u53ef\u4ee5\u4f7f\u7528__init__<\/code>\u65b9\u6cd5\u521d\u59cb\u5316\u5b57\u5178\u7684\u5c5e\u6027\uff0c\u4f7f\u7528__setitem__<\/code>\u548c__getitem__<\/code>\u65b9\u6cd5\u6765\u91cd\u8f7d\u5b57\u5178\u7684\u8bbe\u7f6e\u548c\u83b7\u53d6\u64cd\u4f5c\u3002\u6b64\u5916\uff0c\u8fd8\u53ef\u4ee5\u6dfb\u52a0\u5176\u4ed6\u81ea\u5b9a\u4e49\u65b9\u6cd5\u4ee5\u5b9e\u73b0\u7279\u5b9a\u529f\u80fd\uff0c\u4f8b\u5982\u67e5\u627e\u952e\u3001\u5220\u9664\u952e\u6216\u8fd4\u56de\u6240\u6709\u952e\u503c\u5bf9\u3002<\/p>\n
\u521b\u5efa\u5b57\u5178\u7c7b\u65f6\u9700\u8981\u6ce8\u610f\u54ea\u4e9b\u6027\u80fd\u95ee\u9898\uff1f<\/strong>
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\u5982\u4f55\u5728\u5b57\u5178\u7c7b\u4e2d\u5b9e\u73b0\u989d\u5916\u7684\u529f\u80fd\uff0c\u6bd4\u5982\u952e\u7684\u6392\u5e8f\u6216\u53bb\u91cd\uff1f<\/strong>
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