{"id":2182,"date":"2026-04-24T22:36:46","date_gmt":"2026-04-24T14:36:46","guid":{"rendered":"http:\/\/www.preluna.xyz\/?p=2182"},"modified":"2026-04-24T22:36:47","modified_gmt":"2026-04-24T14:36:47","slug":"python-%e9%87%8c%e7%9a%84%e5%ad%97%e7%ac%a6%e4%b8%b2%e4%b8%8d%e8%83%bd%e7%9b%b4%e6%8e%a5%e4%bf%ae%e6%94%b9%e6%9f%90%e4%b8%80%e4%b8%aa%e4%bd%8d%e7%bd%ae%e7%9a%84%e5%ad%97%e7%ac%a6","status":"publish","type":"post","link":"http:\/\/www.preluna.xyz\/index.php\/2026\/04\/24\/python-%e9%87%8c%e7%9a%84%e5%ad%97%e7%ac%a6%e4%b8%b2%e4%b8%8d%e8%83%bd%e7%9b%b4%e6%8e%a5%e4%bf%ae%e6%94%b9%e6%9f%90%e4%b8%80%e4%b8%aa%e4%bd%8d%e7%bd%ae%e7%9a%84%e5%ad%97%e7%ac%a6\/preluna\/text\/","title":{"rendered":"Python \u91cc\u7684\u5b57\u7b26\u4e32\u4e0d\u80fd\u76f4\u63a5\u4fee\u6539\u67d0\u4e00\u4e2a\u4f4d\u7f6e\u7684\u5b57\u7b26"},"content":{"rendered":"\n
\"\"<\/div><\/figure>\n\n\n\n

1. \u9898\u76ee\u8003\u70b9<\/h2>\n\n\n\n

\u8fd9\u9053\u9898\u4e3b\u8981\u8003\uff1a<\/p>\n\n\n\n

\u5b57\u7b26\u4e32\u7d22\u5f15\u3001\u5b57\u7b26\u4e32\u4e0d\u53ef\u53d8\u6027\u3001\u5217\u8868\u4fee\u6539\u3001\u5b57\u7b26\u4e32\u62fc\u63a5\u3001\u51fd\u6570\u8fd4\u56de\u503c\u3001\u8f93\u5165\u62c6\u5206\u3002<\/p>\n\n\n\n

\u5b83\u7684\u6838\u5fc3\u4e0d\u662f\u590d\u6742\u7b97\u6cd5\uff0c\u800c\u662f\u8ba9\u4f60\u7406\u89e3\uff1aPython \u91cc\u7684\u5b57\u7b26\u4e32\u4e0d\u80fd\u76f4\u63a5\u4fee\u6539\u67d0\u4e00\u4e2a\u4f4d\u7f6e\u7684\u5b57\u7b26\u3002<\/p>\n\n\n\n

\u6bd4\u5982\u4e0b\u9762\u8fd9\u6837\u662f\u4e0d\u5141\u8bb8\u7684\uff1a<\/p>\n\n\n\n

s = \"abracadabra\"\ns[5] = \"k\"\n<\/code><\/pre>\n\n\n\n
\u4f1a\u62a5\u9519\uff0c\u56e0\u4e3a\u5b57\u7b26\u4e32\u662f\u4e0d\u53ef\u53d8\u7c7b\u578b\u3002<\/p>\n\n\n\n
\n\n\n\n
2. \u5ba1\u9898<\/h2>\n\n\n\n
\u9898\u76ee\u8981\u6c42\uff1a<\/p>\n\n\n\n
\u7ed9\u4f60\u4e00\u4e2a\u5b57\u7b26\u4e32 string<\/code>\uff0c\u518d\u7ed9\u4f60\u4e00\u4e2a\u4f4d\u7f6e position<\/code> \u548c\u4e00\u4e2a\u5b57\u7b26 character<\/code>\uff0c\u628a\u5b57\u7b26\u4e32\u4e2d position<\/code> \u8fd9\u4e2a\u7d22\u5f15\u4f4d\u7f6e\u4e0a\u7684\u5b57\u7b26\u66ff\u6362\u6210 character<\/code>\uff0c\u7136\u540e\u8fd4\u56de\u4fee\u6539\u540e\u7684\u5b57\u7b26\u4e32\u3002<\/p>\n\n\n\n
\u8f93\u5165\u683c\u5f0f\u662f\uff1a<\/p>\n\n\n\n
\u7b2c\u4e00\u884c\uff1a<\/p>\n\n\n\n
abracadabra\n<\/code><\/pre>\n\n\n\n
\u7b2c\u4e8c\u884c\uff1a<\/p>\n\n\n\n
5 k\n<\/code><\/pre>\n\n\n\n
\u8868\u793a\uff1a<\/p>\n\n\n\n
string = \"abracadabra\"\nposition = 5\ncharacter = \"k\"\n<\/code><\/pre>\n\n\n\n
\u6ce8\u610f\uff0cPython \u5b57\u7b26\u4e32\u7d22\u5f15\u4ece 0<\/code> \u5f00\u59cb\uff0c\u4e0d\u662f\u4ece 1<\/code> \u5f00\u59cb\u3002<\/p>\n\n\n\n
\u6240\u4ee5\uff1a<\/p>\n\n\n\n
a b r a c a d a b r a\n0 1 2 3 4 5 6 7 8 9 10\n<\/code><\/pre>\n\n\n\n
\u7d22\u5f15 5<\/code> \u4f4d\u7f6e\u4e0a\u7684\u5b57\u7b26\u662f \"a\"<\/code>\uff0c\u8981\u6539\u6210 \"k\"<\/code>\u3002<\/p>\n\n\n\n
\u7ed3\u679c\u5c31\u662f\uff1a<\/p>\n\n\n\n
abrackdabra\n<\/code><\/pre>\n\n\n\n
\n\n\n\n
3. \u601d\u8def\u63d0\u793a<\/h2>\n\n\n\n
\u8fd9\u9898\u6700\u5173\u952e\u7684\u4e00\u53e5\u8bdd\u662f\uff1a\u5b57\u7b26\u4e32\u4e0d\u80fd\u76f4\u63a5\u6539\uff0c\u4f46\u5217\u8868\u53ef\u4ee5\u6539\u3002<\/p>\n\n\n\n
\u6240\u4ee5\u53ef\u4ee5\u8fd9\u6837\u60f3\uff1a<\/p>\n\n\n\n
\u7b2c\u4e00\u6b65\uff0c\u628a\u5b57\u7b26\u4e32\u53d8\u6210\u5217\u8868\u3002<\/p>\n\n\n\n
\"abracadabra\"\n<\/code><\/pre>\n\n\n\n
\u53d8\u6210\uff1a<\/p>\n\n\n\n
['a', 'b', 'r', 'a', 'c', 'a', 'd', 'a', 'b', 'r', 'a']\n<\/code><\/pre>\n\n\n\n
\u7b2c\u4e8c\u6b65\uff0c\u4fee\u6539\u5217\u8868\u4e2d\u6307\u5b9a\u7d22\u5f15\u4f4d\u7f6e\u7684\u5143\u7d20\u3002<\/p>\n\n\n\n
\u628a\u7d22\u5f15 5<\/code> \u7684 \"a\"<\/code> \u6539\u6210 \"k\"<\/code>\u3002<\/p>\n\n\n\n
\u7b2c\u4e09\u6b65\uff0c\u518d\u628a\u5217\u8868\u91cd\u65b0\u62fc\u6210\u5b57\u7b26\u4e32\u3002<\/p>\n\n\n\n
\u8fd9\u5c31\u662f\u6700\u9002\u5408\u521d\u5b66\u8005\u7684\u505a\u6cd5\u3002<\/p>\n\n\n\n
\n\n\n\n
4. \u5b8c\u6574\u8bbe\u8ba1\u601d\u8def<\/h2>\n\n\n\n
\u8fd9\u9053\u9898\u53ef\u4ee5\u62c6\u6210 3 \u6b65\uff1a<\/p>\n\n\n\n
\u7b2c\u4e00\u6b65\uff1a\u628a\u5b57\u7b26\u4e32\u8f6c\u6210\u5217\u8868<\/h3>\n\n\n\n
\u56e0\u4e3a\u5b57\u7b26\u4e32\u4e0d\u80fd\u4fee\u6539\u5355\u4e2a\u5b57\u7b26\uff0c\u4f46\u662f\u5217\u8868\u53ef\u4ee5\u4fee\u6539\u5143\u7d20\u3002<\/p>\n\n\n\n
string_list = list(string)\n<\/code><\/pre>\n\n\n\n
\u7b2c\u4e8c\u6b65\uff1a\u4fee\u6539\u6307\u5b9a\u4f4d\u7f6e<\/h3>\n\n\n\n
\u9898\u76ee\u7ed9\u4e86 position<\/code>\uff0c\u8868\u793a\u8981\u4fee\u6539\u7684\u4f4d\u7f6e\uff1b\u7ed9\u4e86 character<\/code>\uff0c\u8868\u793a\u65b0\u5b57\u7b26\u3002<\/p>\n\n\n\n
string_list[position] = character\n<\/code><\/pre>\n\n\n\n
\u7b2c\u4e09\u6b65\uff1a\u628a\u5217\u8868\u91cd\u65b0\u62fc\u56de\u5b57\u7b26\u4e32<\/h3>\n\n\n\n
\u5217\u8868\u4e0d\u80fd\u76f4\u63a5\u4f5c\u4e3a\u7b54\u6848\u8fd4\u56de\uff0c\u9700\u8981\u91cd\u65b0\u53d8\u6210\u5b57\u7b26\u4e32\u3002<\/p>\n\n\n\n
new_string = ''.join(string_list)\n<\/code><\/pre>\n\n\n\n
\u8fd9\u91cc\u7684 ''.join(...)<\/code> \u7684\u610f\u601d\u662f\uff1a\u7528\u7a7a\u5b57\u7b26\u4e32\u4f5c\u4e3a\u8fde\u63a5\u7b26\uff0c\u628a\u5217\u8868\u91cc\u7684\u5b57\u7b26\u4e00\u4e2a\u4e00\u4e2a\u8fde\u8d77\u6765\u3002<\/p>\n\n\n\n
\n\n\n\n
5. \u4ee3\u7801\u5b9e\u73b0<\/h2>\n\n\n\n
def mutate_string(string, position, character):\n    string_list = list(string)\n    string_list[position] = character\n    new_string = ''.join(string_list)\n    return new_string\n\n\nif __name__ == '__main__':\n    s = input()\n    i, c = input().split()\n    s_new = mutate_string(s, int(i), c)\n    print(s_new)\n<\/code><\/pre>\n\n\n\n
\n\n\n\n
6. \u6a21\u677f\u4ee3\u7801\u89e3\u91ca<\/h2>\n\n\n\n
\u8fd9\u51e0\u884c\u662f HackerRank \u5e38\u89c1\u7684\u8f93\u5165\u6a21\u677f\uff1a<\/p>\n\n\n\n
if __name__ == '__main__':\n<\/code><\/pre>\n\n\n\n
\u521d\u5b66\u9636\u6bb5\u53ef\u4ee5\u5148\u7406\u89e3\u4e3a\uff1a\u7a0b\u5e8f\u4ece\u8fd9\u91cc\u5f00\u59cb\u6b63\u5f0f\u8fd0\u884c\u3002<\/p>\n\n\n\n
s = input()\n<\/code><\/pre>\n\n\n\n
\u8bfb\u53d6\u7b2c\u4e00\u884c\u5b57\u7b26\u4e32\u3002<\/p>\n\n\n\n
\u4f8b\u5982\u8f93\u5165\uff1a<\/p>\n\n\n\n
abracadabra\n<\/code><\/pre>\n\n\n\n
\u90a3\u4e48\uff1a<\/p>\n\n\n\n
s = \"abracadabra\"\n<\/code><\/pre>\n\n\n\n
\u4e0b\u4e00\u884c\uff1a<\/p>\n\n\n\n
i, c = input().split()\n<\/code><\/pre>\n\n\n\n
\u8bfb\u53d6\u7b2c\u4e8c\u884c\uff0c\u5e76\u7528\u7a7a\u683c\u62c6\u5f00\u3002<\/p>\n\n\n\n
\u4f8b\u5982\u8f93\u5165\uff1a<\/p>\n\n\n\n
5 k\n<\/code><\/pre>\n\n\n\n
\u7ecf\u8fc7 split()<\/code> \u4e4b\u540e\u53d8\u6210\uff1a<\/p>\n\n\n\n
[\"5\", \"k\"]\n<\/code><\/pre>\n\n\n\n
\u6240\u4ee5\uff1a<\/p>\n\n\n\n
i = \"5\"\nc = \"k\"\n<\/code><\/pre>\n\n\n\n
\u6ce8\u610f\uff0c\u6b64\u65f6 i<\/code> \u662f\u5b57\u7b26\u4e32 \"5\"<\/code>\uff0c\u4e0d\u662f\u6574\u6570 5<\/code>\u3002<\/p>\n\n\n\n
\u6240\u4ee5\u8c03\u7528\u51fd\u6570\u65f6\u8981\u5199\uff1a<\/p>\n\n\n\n
int(i)\n<\/code><\/pre>\n\n\n\n
\u628a \"5\"<\/code> \u8f6c\u6210\u6574\u6570 5<\/code>\u3002<\/p>\n\n\n\n
\n\n\n\n
7. \u8fd0\u884c\u6f14\u793a<\/h2>\n\n\n\n
\u8f93\u5165\uff1a<\/p>\n\n\n\n
abracadabra\n5 k\n<\/code><\/pre>\n\n\n\n
\u7a0b\u5e8f\u6267\u884c\u8fc7\u7a0b\uff1a<\/p>\n\n\n\n
s = \"abracadabra\"\ni = \"5\"\nc = \"k\"\n<\/code><\/pre>\n\n\n\n
\u8c03\u7528\u51fd\u6570\uff1a<\/p>\n\n\n\n
mutate_string(\"abracadabra\", 5, \"k\")\n<\/code><\/pre>\n\n\n\n
\u8fdb\u5165\u51fd\u6570\u540e\uff1a<\/p>\n\n\n\n
string_list = list(string)\n<\/code><\/pre>\n\n\n\n
\u5f97\u5230\uff1a<\/p>\n\n\n\n
['a', 'b', 'r', 'a', 'c', 'a', 'd', 'a', 'b', 'r', 'a']\n<\/code><\/pre>\n\n\n\n
\u4fee\u6539\u7d22\u5f15 5<\/code>\uff1a<\/p>\n\n\n\n
string_list[5] = \"k\"\n<\/code><\/pre>\n\n\n\n
\u5f97\u5230\uff1a<\/p>\n\n\n\n
['a', 'b', 'r', 'a', 'c', 'k', 'd', 'a', 'b', 'r', 'a']\n<\/code><\/pre>\n\n\n\n
\u518d\u62fc\u56de\u5b57\u7b26\u4e32\uff1a<\/p>\n\n\n\n
new_string = ''.join(string_list)\n<\/code><\/pre>\n\n\n\n
\u7ed3\u679c\uff1a<\/p>\n\n\n\n
\"abrackdabra\"\n<\/code><\/pre>\n\n\n\n
\u6700\u7ec8\u8f93\u51fa\uff1a<\/p>\n\n\n\n
abrackdabra\n<\/code><\/pre>\n\n\n\n
\n\n\n\n
8. \u53e6\u4e00\u79cd\u505a\u6cd5\uff1a\u5b57\u7b26\u4e32\u5207\u7247<\/h2>\n\n\n\n
\u9664\u4e86\u8f6c\u6210\u5217\u8868\uff0c\u8fd8\u53ef\u4ee5\u7528\u5207\u7247\u3002<\/p>\n\n\n\n
\u601d\u8def\u662f\uff1a<\/p>\n\n\n\n
\u539f\u5b57\u7b26\u4e32 = \u524d\u534a\u90e8\u5206 + \u65b0\u5b57\u7b26 + \u540e\u534a\u90e8\u5206<\/p>\n\n\n\n
def mutate_string(string, position, character):\n    return string[:position] + character + string[position + 1:]\n<\/code><\/pre>\n\n\n\n
\u7528\u6837\u4f8b\u89e3\u91ca\uff1a<\/p>\n\n\n\n
string = \"abracadabra\"\nposition = 5\ncharacter = \"k\"\n<\/code><\/pre>\n\n\n\n
\u90a3\u4e48\uff1a<\/p>\n\n\n\n
string[:5]\n<\/code><\/pre>\n\n\n\n
\u5f97\u5230\u7d22\u5f15 5<\/code> \u4e4b\u524d\u7684\u5185\u5bb9\uff1a<\/p>\n\n\n\n
abrac\n<\/code><\/pre>\n\n\n\n
string[6:]\n<\/code><\/pre>\n\n\n\n
\u5f97\u5230\u7d22\u5f15 5<\/code> \u540e\u9762\u7684\u5185\u5bb9\uff1a<\/p>\n\n\n\n
dabra\n<\/code><\/pre>\n\n\n\n
\u6240\u4ee5\uff1a<\/p>\n\n\n\n
\"abrac\" + \"k\" + \"dabra\"\n<\/code><\/pre>\n\n\n\n
\u7ed3\u679c\u5c31\u662f\uff1a<\/p>\n\n\n\n
abrackdabra\n<\/code><\/pre>\n\n\n\n
\u4e0d\u8fc7\u5bf9\u4e8e\u521d\u5b66\u8005\u6765\u8bf4\uff0c\u5efa\u8bae\u5148\u638c\u63e1\u201c\u8f6c\u5217\u8868\u518d\u4fee\u6539\u201d\u7684\u65b9\u6cd5\uff0c\u56e0\u4e3a\u5b83\u66f4\u76f4\u89c2\u3002<\/p>\n\n\n\n
\n\n\n\n
9. \u65b9\u6cd5\u603b\u7ed3<\/h2>\n\n\n\n
\u8fd9\u7c7b\u9898\u4ee5\u540e\u53ef\u4ee5\u8fd9\u6837\u5224\u65ad\uff1a<\/p>\n\n\n\n
\u53ea\u8981\u9898\u76ee\u8bf4\u201c\u4fee\u6539\u5b57\u7b26\u4e32\u4e2d\u67d0\u4e2a\u4f4d\u7f6e\u7684\u5b57\u7b26\u201d\uff0c\u4f60\u5c31\u8981\u9a6c\u4e0a\u60f3\u5230\uff1a<\/p>\n\n\n\n
Python \u5b57\u7b26\u4e32\u4e0d\u80fd\u76f4\u63a5\u4fee\u6539\u3002<\/p>\n\n\n\n
\u5e38\u89c1\u505a\u6cd5\u6709\u4e24\u4e2a\uff1a<\/p>\n\n\n\n
\u65b9\u6cd5<\/th>\u601d\u8def<\/th>\u9002\u5408\u7a0b\u5ea6<\/th><\/tr><\/thead>
\u8f6c\u5217\u8868\u518d\u4fee\u6539<\/td>list()<\/code> \u2192 \u4fee\u6539\u5143\u7d20 \u2192 join()<\/code><\/td>\u521d\u5b66\u8005\u6700\u63a8\u8350<\/td><\/tr>
\u5b57\u7b26\u4e32\u5207\u7247<\/td>\u524d\u534a\u6bb5 + \u65b0\u5b57\u7b26 + \u540e\u534a\u6bb5<\/td>\u66f4\u7b80\u6d01\uff0c\u4f46\u9700\u8981\u719f\u6089\u5207\u7247<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\u8bb0\u4f4f\u4e00\u53e5\u8bdd\uff1a<\/p>\n\n\n\n
\u5b57\u7b26\u4e32\u4e0d\u80fd\u539f\u5730\u6539\uff0c\u5217\u8868\u53ef\u4ee5\u539f\u5730\u6539\u3002<\/p>\n\n\n\n
\n\n\n\n
10. \u540c\u7c7b\u578b\u7ec3\u4e60<\/h2>\n\n\n\n
\u8bf7\u4f60\u5c1d\u8bd5\u5b8c\u6210\u4e0b\u9762\u7684\u5c0f\u7ec3\u4e60\u3002<\/p>\n\n\n\n
\u9898\u76ee\uff1a<\/p>\n\n\n\n
\u8f93\u5165\u4e00\u4e2a\u5b57\u7b26\u4e32\u3001\u4e00\u4e2a\u7d22\u5f15\u4f4d\u7f6e\u3001\u4e00\u4e2a\u65b0\u5b57\u7b26\uff0c\u628a\u8be5\u4f4d\u7f6e\u7684\u5b57\u7b26\u66ff\u6362\u6389\uff0c\u5e76\u8f93\u51fa\u65b0\u5b57\u7b26\u4e32\u3002<\/p>\n\n\n\n
\u793a\u4f8b\u8f93\u5165\uff1a<\/p>\n\n\n\n
python\n0 P\n<\/code><\/pre>\n\n\n\n
\u793a\u4f8b\u8f93\u51fa\uff1a<\/p>\n\n\n\n
Python\n<\/code><\/pre>\n\n\n\n
\u63d0\u793a\uff1a<\/p>\n\n\n\n
\u5148\u628a \"python\"<\/code> \u8f6c\u6210\u5217\u8868\uff0c\u518d\u628a\u7d22\u5f15 0<\/code> \u7684\u5b57\u7b26\u6539\u6210 \"P\"<\/code>\uff0c\u6700\u540e\u7528 ''.join()<\/code> \u62fc\u56de\u5b57\u7b26\u4e32\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
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