{"id":84819,"date":"2026-07-26T18:42:19","date_gmt":"2026-07-26T10:42:19","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/84819.html"},"modified":"2026-07-26T18:42:19","modified_gmt":"2026-07-26T10:42:19","slug":"python%e7%9a%84%e5%ad%97%e5%85%b8%e7%9f%a5%e8%af%86%e7%82%b9","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/84819.html","title":{"rendered":"python\u7684\u5b57\u5178\u77e5\u8bc6\u70b9"},"content":{"rendered":"

\u4eca\u5929\u6211\u4eec\u5b66\u4e60python\u4e2d\u7684\u5b57\u5178，\u8fd9\u91cc\u7684\u5b57\u5178\u8ddf\u6211\u4eec\u4f20\u7edf\u610f\u4e49\u4e0a\u7684\u5b57\u5178\u5176\u5b9e\u662f\u4e00\u4e2a\u610f\u601d\u3002\u4f20\u7edf\u610f\u4e49\u7684\u5b57\u5178\u6709\u4e00\u4e2a\u67e5\u8be2\u754c\u9762，\u8fd9\u5bf9\u5e94\u7684\u5c31\u662fpy\u5b57\u5178\u4e2d\u7684\u5065（key）；\u6bcf\u4e2a\u67e5\u8be2\u5bf9\u8c61\u6709\u5bf9\u5e94\u7684\u9875\u7801\u89e3\u6790，\u8fd9\u4e2a\u5bf9\u5e94\u7684\u89e3\u6790\u5c31\u662fpy\u5b57\u5178\u4e2d\u7684\u503c（value）\u3002<\/p>\n

\u90a3\u4e48，\u4ec0\u4e48\u662f\u5065\u4ec0\u4e48\u662f\u503c？\u5b57\u5178\u53c8\u6709\u4ec0\u4e48\u4f5c\u7528？\u63a5\u4e0b\u6765\u6211\u4eec\u5f00\u59cb\u5b66\u4e60\u2192<\/p>\n

\u4e00\u3001\u5b9a\u4e49<\/h2>\n

\u5b57\u5178\u548c\u96c6\u5408\u4e00\u6837，\u90fd\u662f\u65e0\u5e8f\u53ef\u53d8\u5e8f\u5217\u3002\u5b57\u5178\u4e2d\u7684\u5143\u7d20，\u4e24\u4e24\u914d\u5bf9，\u4ee5\u952e\u503c\u5bf9\u5f62\u5f0f\u5b58\u50a8\u3002<\/p>\n

"""\u57fa\u672c\u8bed\u6cd5"""
\n{\u5065(key):\u503c(value),\u5065(key):\u503c(value),\u5065(key):\u503c(value),……}<\/p>\n

\u5b57\u5178\u4e2d\u7684\u5065\u5fc5\u987b\u662f\u4e0d\u53ef\u53d8\u7c7b\u578b，\u6bd4\u5982\u5b57\u7b26\u4e32\u3001\u6570\u5b57\u3001\u5143\u7ec4\u7b49，\u4e14\u5b57\u5178\u4e2d\u7684\u5065\u5fc5\u987b\u5177\u5907\u552f\u4e00\u6027，\u4e00\u4e2a\u5b57\u5178\u4e2d\u4e0d\u80fd\u6709\u4e24\u4e2a\u91cd\u590d\u7684\u5065\u5b58\u5728，\u91cd\u590d\u5b9a\u4e49\u4f1a\u5c06\u65e7\u503c\u8986\u76d6\u3002<\/p>\n

\u5b57\u5178\u4e2d\u7684\u503c\u6ca1\u6709\u56fa\u5b9a\u9650\u5236，\u53ef\u4ee5\u662f\u4efb\u4f55\u4e00\u79cd\u5e8f\u5217\u7c7b\u578b\u3002<\/p>\n

\u5b57\u5178\u6709\u8bb8\u591a\u751f\u6210\u548c\u521b\u5efa\u65b9\u5f0f\u2b07\ufe0f<\/p>\n\n\n\n\n\n\n\n\n
\u5e8f\u53f7<\/td>\n\u65b9\u5f0f<\/td>\n\u4f5c\u7528<\/td>\n\u793a\u4f8b<\/td>\n<\/tr>\n
\u2460<\/td>\nx={\u952e\u503c\u5bf9}<\/td>\n\u7b80\u5355\u7c97\u66b4，\u76f4\u63a5\u5b57\u9762\u91cf\u521b\u5efa<\/td>\n\n

x={"a":1,"b":2,"c":3}\n<\/td>\n<\/tr>\n

\u2461<\/td>\ndict()<\/td>\n\u4f7f\u7528dict()\u51fd\u6570，\u7ed9\u5065\u76f4\u63a5\u8d4b\u503c<\/td>\n\n

x=dict(a=1,b=2,c=3)\n<\/td>\n<\/tr>\n

\u2462<\/td>\ndict(\u53ef\u8fed\u4ee3\u5bf9\u8c61)<\/td>\n\u5229\u7528\u5217\u8868\u5d4c\u5957\u5143\u7ec4\u7684\u65b9\u6cd5，\u751f\u6210\u53ef\u8fed\u4ee3\u5bf9\u8c61<\/td>\n\n

# \u5916\u5c42：\u5217\u8868（\u53ef\u8fed\u4ee3）
\n# \u5185\u5c42\u6bcf\u4e00\u9879：\u4e8c\u5143\u5143\u7ec4 (\u952e,\u503c)
\nx = [("a",1), ("b",2)("c",3)]
\ny = dict(x)\n<\/td>\n<\/tr>\n

\u2463<\/td>\ndict.fromkeys()<\/td>\n\u5feb\u901f\u521d\u59cb\u5316\u76f8\u540c\u7684\u503c<\/td>\n\n

x=dict.fromkeys(["a","b","c"],0)
\n#{"a":0,"b":0,"c":0}\n<\/td>\n<\/tr>\n

\u2464<\/td>\nx={}<\/td>\n\u7a7a\u5b57\u5178\u7684\u751f\u6210<\/td>\n\n

x={} #\u751f\u6210\u7684x\u5c31\u662f\u7a7a\u5b57\u5178\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u4e8c\u3001\u5b57\u5178\u7684\u589e\u5220\u6539\u67e5<\/h2>\n

1.\u589e\/\u6539（\u589e\u52a0\/\u4fee\u6539\u5143\u7d20）<\/h3>\n

\u82e5key\u5b58\u5728，\u5219\u4fee\u6539value\u503c，\u82e5key\u4e0d\u5b58\u5728，\u5219\u65b0\u589e\u4e00\u4e2a\u952e\u503c\u5bf9\u3002<\/p>\n\n\n\n\n\n
\u5e8f\u53f7<\/td>\n\u4f5c\u7528<\/td>\n\u793a\u4f8b<\/td>\n<\/tr>\n
\u2460<\/td>\n\u4fee\u6539\u5143\u7d20<\/td>\n\n

x={"a":1,"b":2,"c":3}
\nx["a"]=100
\nprint(x)
\n#{"a":100,"b":2,"c":3}\n<\/td>\n<\/tr>\n

\u2461<\/td>\n\u65b0\u589e\u5143\u7d20<\/td>\n\n

x={"a":1,"b":2,"c":3,}
\nx["D"]=4
\nprint(x)
\n#{"a":1,"b":2,"c":3,"D":4}\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

2.\u5220（\u5220\u9664\u5143\u7d20）<\/h3>\n\n\n\n\n\n\n\n
\u5e8f\u53f7<\/td>\n\u65b9\u6cd5<\/td>\n\u4f5c\u7528<\/td>\n\u793a\u4f8b<\/td>\n<\/tr>\n
\u2460<\/td>\ndel x[key]<\/td>\n\u5229\u7528del\u65b9\u6cd5，\u5220\u9664\u56fa\u5b9a\u952e\u503c\u5bf9<\/td>\n\n

x={"a":1,"b":2,"c":3}
\ndel x["a"]
\nprint(x)
\n#{"b":2,"c":3}\n<\/td>\n<\/tr>\n

\u2461<\/td>\nx.pop(key，\u9ed8\u8ba4\u503c)<\/td>\n\u82e5\u4e0d\u8bbe\u7f6e\u9ed8\u8ba4\u503c，\u5220\u9664\u540e\u8fd4\u56devalue，\u6ca1\u6709\u5bf9\u5e94\u7684key\u5219\u62a5\u9519；\u82e5\u8bbe\u7f6e\u9ed8\u8ba4\u503c，\u6ca1\u6709\u5bf9\u5e94\u7684key\u4e0d\u62a5\u9519，\u8fd4\u56de\u9ed8\u8ba4\u503c\u3002<\/td>\n\n

x={"a":1,"b":2,"c":3}
\ny=x.pop("a")
\nprint(y)
\n#1<\/p>\n

x={"a":1,"b":2,"c":3}
\ny=x.pop("d",0)
\nprint(y)
\n#0\n<\/td>\n<\/tr>\n

\u2462<\/td>\nx.popitem()<\/td>\n\u5220\u9664\u6700\u540e\u63d2\u5165\u7684\u952e\u503c\u5bf9，\u8fd4\u56de\u5143\u7ec4(key,value)<\/td>\n\n

x={"a":1,"b":2,"c":3}
\ny=x.popitem()
\nprint(y)
\n#('c',3)\n<\/td>\n<\/tr>\n

\u2463<\/td>\nx.clear()<\/td>\n\u6e05\u7a7a\u5b57\u5178\u4e2d\u6240\u6709\u7684\u5143\u7d20，\u4fdd\u7559\u5b57\u5178\u5bf9\u8c61<\/td>\n\n

x={"a":1,"b":2,"c":3}
\nx.clear()
\nprint(x)
\n#{}\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

3.\u67e5（\u67e5\u627e\/\u83b7\u53d6\u5143\u7d20）<\/h3>\n\n\n\n\n\n\n
\u5e8f\u53f7<\/td>\n\u65b9\u6cd5<\/td>\n\u4f5c\u7528<\/td>\n\u793a\u4f8b<\/td>\n<\/tr>\n
\u2460<\/td>\nx[key]<\/td>\n\u5229\u7528key\u7d22\u5f15\u83b7\u53d6\u76f8\u5e94\u7684\u503c，\u82e5key\u4e0d\u5b58\u5728\u5219\u62a5\u9519<\/td>\n\n

x={"a":1,"b":2,"c":3}
\nprint(x["a"])
\n#1<\/p>\n

print(x["d"])
\n#\u62a5\u9519\n<\/td>\n<\/tr>\n

\u2461<\/td>\nx.get(key，\u9ed8\u8ba4\u503c)<\/td>\n\u6ca1\u6709\u8f93\u5165\u9ed8\u8ba4\u503c\u65f6，\u82e5key\u4e0d\u5b58\u5728，\u5219\u62a5\u9519<\/td>\n\n

x={"a":1,"b":2,"c":3}
\ny=x.get("a")
\nprint(y)
\n#1<\/p>\n

y=x.get("d")
\nprint(y)
\n#\u62a5\u9519\n<\/td>\n<\/tr>\n

\u8f93\u5165\u9ed8\u8ba4\u503c\u65f6，\u82e5key\u4e0d\u5b58\u5728，\u5219\u8f93\u51fa\u9ed8\u8ba4\u503c<\/td>\n\n

x={"a":1,"b":2,"c":3}
\ny=x.get("d"，0)
\nprint(y)
\n#0\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u4e09\u3001\u5b57\u5178\u7684\u904d\u5386\u53ca\u5176\u65b9\u6cd5<\/h2>\n

\u82e5\u4f60\u5b66\u4e60\u4e86\u524d\u9762\u7684\u96c6\u5408\u77e5\u8bc6，\u4f60\u5e94\u8be5\u5f88\u5bb9\u6613\u7406\u89e3\u904d\u5386\u662f\u4ec0\u4e48，\u5176\u5b9e\u904d\u5386\u5c31\u662f\u83b7\u53d6\u6240\u6709\u5143\u7d20\u3002\u4f46\u5bf9\u4e8e\u5b57\u5178\u6765\u8bf4，\u904d\u5386\u5e76\u4e0d\u4e00\u5b9a\u4ee3\u8868\u83b7\u53d6\u5168\u90e8\u7684\u5143\u7d20，\u4e5f\u53ef\u4ee5\u662f\u83b7\u53d6\u5168\u90e8\u7684key，\u6216\u5219\u83b7\u53d6\u5168\u90e8\u7684value，\u8fd8\u53ef\u4ee5\u662f\u83b7\u53d6\u5168\u90e8\u7684\u952e\u503c\u5bf9\u7b49\u7b49<\/p>\n

\u4e0b\u9762\u662f\u5b57\u5178\u83b7\u53d6\u7684\u4e09\u5927\u65b9\u6cd5\u2b07\ufe0f<\/p>\n\n\n\n\n\n\n
\u5e8f\u53f7<\/td>\n\u65b9\u6cd5<\/td>\n\u4f5c\u7528<\/td>\n\u793a\u4f8b<\/td>\n<\/tr>\n
\u2460<\/td>\nx.keys()<\/td>\n\u83b7\u53d6\u5b57\u5178\u4e2d\u6240\u6709\u7684key<\/td>\n\n

x={"a":1,"b":2,"c":3}
\nprint(x.keys())
\n#dict_keys(['a', 'b', 'c'])\n<\/td>\n<\/tr>\n

\u2461<\/td>\nx.values()<\/td>\n\u83b7\u53d6\u5b57\u5178\u4e2d\u6240\u6709\u7684value<\/td>\n\n

x={"a":1,"b":2,"c":3}
\nprint(x.values())
\n#dict_values([1, 2, 3])<\/p>\n<\/td>\n<\/tr>\n

\u2462<\/td>\nx.items()<\/td>\n\u83b7\u53d6\u5b57\u5178\u4e2d\u6240\u6709\u7684\u952e\u503c\u5bf9\u5143\u7ec4(key,value)<\/td>\n\n

x={"a":1,"b":2,"c":3}
\nprint(x.items())
\n#dict_items([('a', 1), ('b', 2), ('c', 3)])\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u8fd9\u4e9b\u65b9\u6cd5\u53ef\u4ee5\u83b7\u53d6\u76f8\u5173\u5143\u7d20，\u5e76\u5b58\u50a8\u8d77\u6765\u3002\u4f46\u5982\u679c\u9700\u8981\u5b57\u5178\u904d\u5386（\u4e00\u4e2a\u4e00\u4e2a\u7684\u83b7\u53d6\u5143\u7d20），\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0a\u65b9\u6cd5\u4e0efor\u5faa\u73af\u7ed3\u5408\u83b7\u53d6\u3002<\/p>\n\n\n\n\n\n\n
\u5e8f\u53f7<\/td>\n\u4f5c\u7528<\/td>\n\u793a\u4f8b<\/td>\n<\/tr>\n
\u2460<\/td>\n\u5229\u7528for\u5faa\u73af，\u904d\u5386key<\/td>\n\n

x={"a":1,"b":2,"c":3}
\nfor i in x.keys():
\n print(i,x[i])
\n#a 1
\n#b 2
\n#c 3\n<\/td>\n<\/tr>\n

\u2461<\/td>\n\u5229\u7528for\u5faa\u73af，\u904d\u5386key\u548cvalue<\/td>\n\n

x={"a":1,"b":2,"c":3}
\nfor a,b in x.items():
\n print(f"{a}={b}")
\n#a=1
\n#b=2
\n#c=3\n<\/td>\n<\/tr>\n

\u2462<\/td>\n\u5229\u7528for\u5faa\u73af，\u76f4\u63a5\u904d\u5386\u5b57\u5178，\u7cfb\u7edf\u9ed8\u8ba4\u904d\u5386key<\/td>\n\n

x={"a":1,"b":2,"c":3}
\nfor i in x:
\n print(i)
\n#a
\n#b
\n#c<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u56db\u3001\u5b57\u5178\u5e38\u7528\u5185\u7f6e\u51fd\u6570<\/h2>\n

\u4ee5\u4e0b\u5185\u7f6e\u65b9\u6cd5\u4e3b\u8981\u662f\u5408\u5e76\u5b57\u5178<\/p>\n\n\n\n\n\n\n
\u5e8f\u53f7<\/td>\n\u65b9\u6cd5<\/td>\n\u4f5c\u7528<\/td>\n\u793a\u4f8b<\/td>\n<\/tr>\n
\u2460<\/td>\nx.updat(y）<\/td>\n\u5408\u5e76\u4e24\u4e2a\u5b57\u5178，\u5e76\u6c47\u603b\u7ed9x<\/td>\n\n

x={"a":1,"b":2}
\ny={"c":3,"d":4}
\nx.update(y)
\nprint(x)
\n#{'a': 1, 'b': 2, 'c': 3, 'd': 4}\n<\/td>\n<\/tr>\n

\u2461<\/td>\nz=x|y<\/td>\n\u5408\u5e76\u4e24\u4e2a\u5b57\u5178，\u751f\u6210\u4e00\u4e2a\u65b0\u5b57\u5178，\u4e0d\u6539\u53d8\u539f\u5b57\u5178<\/td>\n\n

x={"a":1,"b":2}
\ny={"c":3,"d":4}
\nz=x|y
\nprint(z)
\n#{'a': 1, 'b': 2, 'c': 3, 'd': 4}\n<\/td>\n<\/tr>\n

\u2462<\/td>\nx|=y<\/td>\n\u539f\u5730\u5408\u5e76\u4e24\u4e2a\u5b57\u5178<\/td>\n\n

x={"a":1,"b":2}
\ny={"c":3,"d":4}
\nx|=y
\nprint(x)
\n#{'a': 1, 'b': 2, 'c': 3, 'd': 4}\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u4e94\u3001\u5224\u65ad\u5065\u662f\u5426\u5b58\u5728<\/h2>\n

\u5728\u5b57\u5178\u4e2d\u6211\u4eec\u53ef\u4ee5\u5229\u7528in\/not in\u7684\u65b9\u6cd5，\u5224\u65adkey\u662f\u5426\u5b58\u5728\u8be5\u5b57\u5178\u4e2d\u3002<\/p>\n

x={"a":1,"b":2,"c":3}
\nprint("a" in x)
\n#True<\/p>\n

print("d" in x)
\n#False<\/p>\n

\u4f46\u8981\u6ce8\u610f\u7684\u662f，in\/not in\u7684\u65b9\u6cd5\u5e76\u4e0d\u80fd\u5224\u65ad\u5b57\u5178\u4e2d\u7684\u503c（value）<\/p>\n

x={"a":1,"b":2,"c":3}
\nprint(1 in x)
\n#False,\u4e0d\u8bba\u503c\u662f\u5426\u5b58\u5728\u4e8e\u5b57\u5178\u4e2d，\u90fd\u4f1a\u8f93\u51faFalse<\/p>\n

\u5f53\u6211\u4eec\u8981\u7528in\/not in\u65b9\u6cd5\u5224\u65ad\u503c，\u5e94\u8be5\u8fd9\u6837\u5199<\/p>\n

x={"a":1,"b":2,"c":3}
\nprint(1 in x.values())
\n#True<\/p>\n

\u516d\u3001\u5b57\u5178\u63a8\u5bfc\u5f0f<\/h2>\n

\u4e4b\u524d\u6211\u4eec\u5b66\u4e60\u7684\u5217\u8868\u63a8\u5bfc\u5f0f\u548c\u96c6\u5408\u63a8\u5bfc\u5f0f，\u73b0\u5728\u7684\u5b57\u5178\u63a8\u5bfc\u5f0f\u4e5f\u548c\u90a3\u4e24\u4e2a\u5dee\u4e0d\u591a，\u53ea\u4e0d\u8fc7\u8868\u8fbe\u5f0f\u73b0\u5728\u9700\u8981\u4e24\u4e2a，\u4e00\u4e2akey\u8868\u8fbe\u5f0f，\u4e00\u4e2avalue\u8868\u8fbe\u5f0f\u3002<\/p>\n

1.\u57fa\u672c\u63a8\u5bfc\u5f0f<\/h3>\n

{key\u8868\u8fbe\u5f0f: value\u8868\u8fbe\u5f0f for \u53d8\u91cf in \u53ef\u8fed\u4ee3\u5bf9\u8c61}<\/p>\n

\u524d\u9762\u90e8\u5206\u7531\u4e24\u4e2a\u8868\u8fbe\u5f0f\u751f\u6210\u7ed3\u679c，\u540e\u9762\u7684\u5faa\u73af\u4f9d\u6b21\u8f93\u51fa\u8303\u56f4\u5185\u6570\u636e，\u4e3e\u4e2a\u4f8b\u5b50<\/p>\n

x={i:i*2 for i in range(5)}
\nprint(x)
\n#{0: 0, 1: 2, 2: 4, 3: 6, 4: 8}<\/p>\n

2.\u5e26\u5206\u652f\u7ed3\u6784\u63a8\u5bfc\u5f0f<\/h3>\n

{key\u8868\u8fbe\u5f0f: value\u8868\u8fbe\u5f0f for \u53d8\u91cf in \u53ef\u8fed\u4ee3\u5bf9\u8c61 if \u6761\u4ef6}<\/p>\n

\u5229\u7528if\u8bed\u53e5，\u7b5b\u9009\u4e0d\u9700\u8981\u7684\u90e8\u5206<\/p>\n

x={i:i*2 for i in range(10) if i>5}
\nprint(x)
\n#{6: 12, 7: 14, 8: 16, 9: 18}<\/p>\n

\u8ddf\u5176\u4ed6\u5e8f\u5217\u7c7b\u578b\u76f8\u540c\u7684，\u5b57\u5178\u63a8\u5bfc\u5f0f\u4e3b\u8981\u4f5c\u7528\u4e5f\u662f\u66f4\u5feb\u7684\u751f\u6210\u5b57\u5178，\u800c\u4e0d\u662f\u4f7f\u7528\u4f20\u7edf\u7684for\u5faa\u73af\u751f\u6210\u3002\u5b57\u5178\u63a8\u5bfc\u5f0f\u5f53\u7136\u4e5f\u53ef\u4ee5\u7528\u5d4c\u5957\u7684\u5f62\u5f0f\u6765\u5199，\u5e76\u4e14\u6709\u591a\u4e2a\u5206\u652f\u7ed3\u6784\u642d\u914d，\u8bfb\u8005\u4eec\u53ef\u4ee5\u6839\u636e\u81ea\u5df1\u7684\u9700\u6c42\u81ea\u7531\u642d\u914d\u3002<\/p>\n

\u4f46\u662f\u9700\u8981\u6ce8\u610f\u7684\u662f，\u63a8\u5bfc\u5f0f\u662f\u4e00\u79cd\u7b80\u6d01\u7684\u64cd\u4f5c\u5f62\u5f0f，\u4e0d\u8981\u4e3a\u4e86\u66f4\u9ad8\u7ea7\u7684\u5f62\u5f0f\u5c31\u523b\u610f\u5730\u4f7f\u7528\u5b83，\u56e0\u4e3apy\u8bb2\u7a76\u7684\u662f\u901a\u4fd7\u6613\u61c2\u7684\u5f62\u5f0f~<\/p>\n

\u4e03\u3001\u5b57\u5178\u7684\u62f7\u8d1d\u95ee\u9898<\/h2>\n

\u62f7\u8d1d\u4e0e\u8d4b\u503c\u4e0d\u540c\u7684\u662f，\u62f7\u8d1d\u662f\u751f\u6210\u4e24\u4e2a\u4e0d\u540c\u5730\u5740\u7684\u5b57\u5178，\u800c\u8d4b\u503c\u662f\u751f\u6210\u4e24\u4e2a\u5730\u5740\u76f8\u540c\u7684\u5b57\u5178\u3002<\/p>\n

\u82e5\u5730\u5740\u76f8\u540c，\u5219\u53ea\u8981\u6709\u4e00\u4e2a\u5b57\u5178\u6539\u53d8，\u53e6\u4e00\u4e2a\u5c31\u4f1a\u8ddf\u7740\u6539\u53d8\u3002\u540c\u7406，\u5730\u5740\u4e0d\u540c\u7684\u5b57\u5178\u4e0d\u4f1a\u53d7\u53e6\u4e00\u4e2a\u7684\u6539\u53d8\u800c\u6539\u53d8\u3002<\/p>\n

1.\u6d45\u62f7\u8d1d<\/h3>\n

\u62f7\u8d1d\u5b57\u5178\u6d45\u5c42\u5185\u5bb9，\u6d45\u5c42\u5730\u5740\u53d1\u751f\u6539\u53d8，\u6df1\u5c42\u5730\u5740\u4e0d\u53d8\u3002<\/p>\n

x = {"a": [1,2]}
\ny = x.copy()
\nx["a"].append(3)
\nprint(y)
\n#{"a":[1,2,3]}<\/p>\n

\u4ee5\u4e0a\u4f8b\u5b50\u4f53\u73b0\u6211\u4eec\u7ed9x\u6d45\u62f7\u8d1d，\u751f\u6210y\u5b57\u5178，\u5e76\u5c06x\u6df1\u5c42\u5185\u5bb9\u6539\u53d8，y\u4e5f\u4f1a\u968f\u4e4b\u6539\u53d8，\u8fd9\u5c31\u4f53\u73b0x\u548cy\u5b9e\u9645\u4e0a\u6df1\u5c42\u5730\u5740\u662f\u540c\u4e00\u4e2a\u3002<\/p>\n

2.\u6df1\u62f7\u8d1d<\/h3>\n

\u5229\u7528copy\u6a21\u5757\u7684deepcopy\u65b9\u6cd5，\u53ef\u4ee5\u7ed9\u5b57\u5178\u8fdb\u884c\u6df1\u62f7\u8d1d，\u8fd9\u6837\u5b57\u5178\u7684\u6d45\u5c42\u548c\u5d4c\u5957\u5c42\u5730\u5740\u90fd\u4f1a\u53d1\u751f\u6539\u53d8\u3002<\/p>\n

import copy
\nx={"a":[1,2],"b":[3,4]}
\ny=copy.deepcopy(x)
\nx["a"].append(5)
\nprint(x)
\nprint(y)
\n#{'a': [1, 2, 5], 'b': [3, 4]}
\n#{'a': [1, 2], 'b': [3, 4]}<\/p>\n

\u663e\u7136，\u8fd9\u6837x\u548cy\u5c31\u4e0d\u4f1a\u76f8\u7b49\u3002<\/p>\n

\u516b\u3001\u603b\u7ed3<\/h2>\n

\u5229\u7528\u5b57\u5178\u6536\u96c6\u5927\u91cf\u5185\u5bb9，\u53ef\u4ee5\u8ba9\u6211\u4eec\u5feb\u901f\u83b7\u53d6\u6240\u9700\u7684\u503c，\u4e0d\u7528\u4e00\u4e2a\u4e00\u4e2a\u53bb\u67e5\u627e\u3002<\/p>\n

\u4e0b\u9762\u662f\u6211\u901a\u8fc7morse\u5bc6\u7801，\u83b7\u53d6\u5bf9\u5e94\u7684\u5b57\u6bcd，\u8f93\u51fa\u201c\u52a0\u5bc6\u201c\u8bed\u53e5\u5bf9\u5e94\u7684\u82f1\u6587\u3002<\/p>\n

morse = {
\n 'a': '.-', 'b': '-…', 'c': '-.-.', 'd': '-..', 'e': '.',
\n 'f': '..-.', 'g': '–.', 'h': '….', 'i': '..', 'j': '.—',
\n 'k': '-.-', 'l': '.-..', 'm': '–', 'n': '-.', 'o': '—',
\n 'p': '.–.', 'q': '–.-', 'r': '.-.', 's': '…', 't': '-',
\n 'u': '..-', 'v': '…-', 'w': '.–', 'x': '-..-', 'y': '-.–', 'z': '–..'
\n}
\nreverse_morse = {v: k for k, v in morse.items()}
\nmorse_str = "…. . .-.. .-.. —"
\ncode_list = morse_str.split()
\nres = ""
\nfor code in code_list:
\n res += reverse_morse[code]
\nprint(res)<\/p>\n

#hello<\/p>\n

\u600e\u4e48\u6837，\u662f\u4e0d\u662f\u6bd4\u8089\u773c\u4e00\u4e2a\u4e2a\u5bf9\u5e94\u65b9\u4fbf\u5f88\u591a\u5462？<\/p>\n

\u591a\u591a\u52a8\u52a8\u4f60\u7684\u5c0f\u624b\u64cd\u4f5c\u4e00\u4e0b，\u4e5f\u8bb8\u4f60\u4e5f\u80fd\u591f\u8f7b\u677e\u5730\u5199\u4e00\u4e2a\u5f3a\u5927\u7684\u5b57\u5178~<\/p>\n

\u6700\u540e，\u611f\u8c22\u5927\u5bb6\u7684\u9605\u8bfb，\u5982\u679c\u4f60\u5bf9py\u7684\u5176\u4ed6\u77e5\u8bc6\u611f\u5174\u8da3，\u53ef\u4ee5\u770b\u770b\u6211\u7684\u5176\u4ed6\u535a\u5ba2，\u90a3\u91cc\u6709\u6e05\u6670\u7684\u8bb2\u89e3\u3002\u5982\u679c\u672c\u7bc7\u6587\u7ae0\u6709\u4ec0\u4e48\u4e0d\u8db3\u548c\u6f0f\u6d1e，\u5e0c\u671b\u5927\u5bb6\u53ef\u4ee5\u6307\u51fa，\u6211\u5c06\u7acb\u5373\u505a\u51fa\u6539\u6b63！！<\/p>\n<\/p>\n<\/p>\n<\/p>\n<\/p>\n<\/p>\n<\/p><\/p>\n","protected":false},"excerpt":{"rendered":"

\u4eca\u5929\u6211\u4eec\u5b66\u4e60python\u4e2d\u7684\u5b57\u5178，\u8fd9\u91cc\u7684\u5b57\u5178\u8ddf\u6211\u4eec\u4f20\u7edf\u610f\u4e49\u4e0a\u7684\u5b57\u5178\u5176\u5b9e\u662f\u4e00\u4e2a\u610f\u601d\u3002\u4f20\u7edf\u610f\u4e49\u7684\u5b57\u5178\u6709\u4e00\u4e2a\u67e5\u8be2\u754c\u9762，\u8fd9\u5bf9\u5e94\u7684\u5c31\u662fpy\u5b57\u5178\u4e2d\u7684\u5065（key）；\u6bcf\u4e2a\u67e5\u8be2\u5bf9\u8c61\u6709\u5bf9\u5e94\u7684\u9875\u7801\u89e3\u6790，\u8fd9\u4e2a\u5bf9\u5e94\u7684\u89e3\u6790\u5c31\u662fpy\u5b57\u5178\u4e2d\u7684\u503c（value）\u3002\u90a3\u4e48，\u4ec0\u4e48\u662f\u5065\u4ec0\u4e48\u662f\u503c？\u5b57\u5178\u53c8\u6709\u4ec0\u4e48\u4f5c\u7528？\u63a5\u4e0b\u6765\u6211\u4eec\u5f00\u59cb\u5b66\u4e60\u2192\u4e00\u3001\u5b9a\u4e49\u5b57\u5178\u548c\u96c6\u5408\u4e00\u6837&#xff0c<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[81,190],"topic":[],"class_list":["post-84819","post","type-post","status-publish","format-standard","hentry","category-server","tag-python","tag-190"],"yoast_head":"\npython\u7684\u5b57\u5178\u77e5\u8bc6\u70b9 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/84819.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"python\u7684\u5b57\u5178\u77e5\u8bc6\u70b9 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"\u4eca\u5929\u6211\u4eec\u5b66\u4e60python\u4e2d\u7684\u5b57\u5178，\u8fd9\u91cc\u7684\u5b57\u5178\u8ddf\u6211\u4eec\u4f20\u7edf\u610f\u4e49\u4e0a\u7684\u5b57\u5178\u5176\u5b9e\u662f\u4e00\u4e2a\u610f\u601d\u3002\u4f20\u7edf\u610f\u4e49\u7684\u5b57\u5178\u6709\u4e00\u4e2a\u67e5\u8be2\u754c\u9762，\u8fd9\u5bf9\u5e94\u7684\u5c31\u662fpy\u5b57\u5178\u4e2d\u7684\u5065（key）；\u6bcf\u4e2a\u67e5\u8be2\u5bf9\u8c61\u6709\u5bf9\u5e94\u7684\u9875\u7801\u89e3\u6790，\u8fd9\u4e2a\u5bf9\u5e94\u7684\u89e3\u6790\u5c31\u662fpy\u5b57\u5178\u4e2d\u7684\u503c（value）\u3002\u90a3\u4e48，\u4ec0\u4e48\u662f\u5065\u4ec0\u4e48\u662f\u503c？\u5b57\u5178\u53c8\u6709\u4ec0\u4e48\u4f5c\u7528？\u63a5\u4e0b\u6765\u6211\u4eec\u5f00\u59cb\u5b66\u4e60\u2192\u4e00\u3001\u5b9a\u4e49\u5b57\u5178\u548c\u96c6\u5408\u4e00\u6837&#xff0c\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/84819.html\" \/>\n<meta property=\"og:site_name\" content=\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"article:published_time\" content=\"2026-07-26T10:42:19+00:00\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/84819.html\",\"url\":\"https:\/\/www.wsisp.com\/helps\/84819.html\",\"name\":\"python\u7684\u5b57\u5178\u77e5\u8bc6\u70b9 - 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