{"id":1103238,"date":"2025-01-08T16:08:19","date_gmt":"2025-01-08T08:08:19","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1103238.html"},"modified":"2025-01-08T16:08:22","modified_gmt":"2025-01-08T08:08:22","slug":"python%e5%a6%82%e4%bd%95%e5%90%88%e5%b9%b6%e4%b8%a4%e4%b8%aa%e6%97%a0%e5%ba%8f%e5%88%97%e8%a1%a8","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1103238.html","title":{"rendered":"python\u5982\u4f55\u5408\u5e76\u4e24\u4e2a\u65e0\u5e8f\u5217\u8868"},"content":{"rendered":"

\"python\u5982\u4f55\u5408\u5e76\u4e24\u4e2a\u65e0\u5e8f\u5217\u8868\"<\/p>\n

\u8981\u5408\u5e76\u4e24\u4e2a\u65e0\u5e8f\u7684Python\u5217\u8868\uff0c\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u6cd5\u5b9e\u73b0\uff0c\u5305\u62ec\u4f7f\u7528\u52a0\u53f7\u8fd0\u7b97\u7b26\u3001extend()\u65b9\u6cd5\u3001\u4f7f\u7528itertools.chAI<\/a>n()\u51fd\u6570\u7b49\u3002\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u662f\u4f7f\u7528\u52a0\u53f7\u8fd0\u7b97\u7b26\uff0c\u56e0\u4e3a\u5b83\u7b80\u5355\u4e14\u76f4\u89c2\u3002\u53e6\u4e00\u79cd\u63a8\u8350\u7684\u65b9\u6cd5\u662f\u4f7f\u7528extend()\u65b9\u6cd5\uff0c\u56e0\u4e3a\u5b83\u5728\u539f\u5730\u4fee\u6539\u5217\u8868\uff0c\u6027\u80fd\u66f4\u9ad8\u3002<\/strong><\/p>\n<\/p>\n

\u4f7f\u7528extend()\u65b9\u6cd5\u662f\u5408\u5e76\u4e24\u4e2a\u65e0\u5e8f\u5217\u8868\u7684\u9ad8\u6548\u65b9\u6cd5\u3002extend()\u65b9\u6cd5\u4f1a\u5c06\u53e6\u4e00\u4e2a\u5217\u8868\u4e2d\u7684\u5143\u7d20\u9010\u4e00\u6dfb\u52a0\u5230\u7b2c\u4e00\u4e2a\u5217\u8868\u4e2d\uff0c\u800c\u4e0d\u521b\u5efa\u65b0\u7684\u5217\u8868\u5bf9\u8c61\u3002\u8fd9\u5728\u5904\u7406\u5927\u6570\u636e\u96c6\u65f6\u5c24\u5176\u91cd\u8981\uff0c\u56e0\u4e3a\u5b83\u51cf\u5c11\u4e86\u5185\u5b58\u7684\u4f7f\u7528\u3002\u6b64\u5916\uff0c\u4f7f\u7528extend()\u65b9\u6cd5\u7684\u8bed\u6cd5\u4e5f\u975e\u5e38\u7b80\u6d01\uff0c\u4f7f\u4ee3\u7801\u6613\u4e8e\u9605\u8bfb\u548c\u7ef4\u62a4\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u4f7f\u7528\u52a0\u53f7\u8fd0\u7b97\u7b26<\/h3>\n<\/p>\n

\u52a0\u53f7\u8fd0\u7b97\u7b26\u662f\u6700\u7b80\u5355\u76f4\u63a5\u7684\u65b9\u6cd5\u4e4b\u4e00\u3002\u5b83\u4f1a\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u5217\u8868\uff0c\u5176\u4e2d\u5305\u542b\u4e24\u4e2a\u5217\u8868\u7684\u6240\u6709\u5143\u7d20\u3002<\/p>\n<\/p>\n

list1 = [1, 3, 5]<\/p>\n
list2 = [2, 4, 6]<\/p>\n
merged_list = list1 + list2<\/p>\n
print(merged_list)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u7684\u4f18\u70b9\u662f\u7b80\u5355\u6613\u61c2\uff0c\u4f46\u5b83\u4f1a\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u5217\u8868\u5bf9\u8c61\uff0c\u8fd9\u5728\u5904\u7406\u5927\u6570\u636e\u96c6\u65f6\u53ef\u80fd\u4f1a\u5bfc\u81f4\u5185\u5b58\u95ee\u9898\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u4f7f\u7528extend()\u65b9\u6cd5<\/h3>\n<\/p>\n
extend()\u65b9\u6cd5\u4f1a\u5c06\u53e6\u4e00\u4e2a\u5217\u8868\u4e2d\u7684\u5143\u7d20\u9010\u4e00\u6dfb\u52a0\u5230\u7b2c\u4e00\u4e2a\u5217\u8868\u4e2d\uff0c\u800c\u4e0d\u521b\u5efa\u65b0\u7684\u5217\u8868\u5bf9\u8c61\u3002\u8fd9\u79cd\u65b9\u6cd5\u5728\u5904\u7406\u5927\u6570\u636e\u96c6\u65f6\u66f4\u4e3a\u9ad8\u6548\u3002<\/p>\n<\/p>\n
list1 = [1, 3, 5]<\/p>\n
list2 = [2, 4, 6]<\/p>\n
list1.extend(list2)<\/p>\n
print(list1)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u7684\u4f18\u70b9\u662f\u9ad8\u6548\uff0c\u4f46\u5b83\u4f1a\u4fee\u6539\u539f\u59cb\u5217\u8868\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u4f7f\u7528itertools.chain()\u51fd\u6570<\/h3>\n<\/p>\n
itertools.chain()\u51fd\u6570\u53ef\u4ee5\u5c06\u591a\u4e2a\u53ef\u8fed\u4ee3\u5bf9\u8c61\u8fde\u63a5\u8d77\u6765\uff0c\u8fd4\u56de\u4e00\u4e2a\u8fed\u4ee3\u5668\u3002\u5b83\u4e0d\u4f1a\u521b\u5efa\u65b0\u7684\u5217\u8868\u5bf9\u8c61\uff0c\u9002\u7528\u4e8e\u5904\u7406\u5927\u6570\u636e\u96c6\u3002<\/p>\n<\/p>\n
import itertools<\/p>\n
list1 = [1, 3, 5]<\/p>\n
list2 = [2, 4, 6]<\/p>\n
merged_list = list(itertools.chain(list1, list2))<\/p>\n
print(merged_list)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u7684\u4f18\u70b9\u662f\u9ad8\u6548\u4e14\u4e0d\u4fee\u6539\u539f\u59cb\u5217\u8868\uff0c\u4f46\u9700\u8981\u5bfc\u5165itertools\u6a21\u5757\u3002<\/p>\n<\/p>\n
\u56db\u3001\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f<\/h3>\n<\/p>\n
\u5217\u8868\u63a8\u5bfc\u5f0f\u53ef\u4ee5\u7528\u4e8e\u5408\u5e76\u5217\u8868\uff0c\u4f46\u5b83\u4f1a\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u5217\u8868\u5bf9\u8c61\u3002<\/p>\n<\/p>\n
list1 = [1, 3, 5]<\/p>\n
list2 = [2, 4, 6]<\/p>\n
merged_list = [item for sublist in [list1, list2] for item in sublist]<\/p>\n
print(merged_list)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u7684\u4f18\u70b9\u662f\u7075\u6d3b\uff0c\u4f46\u5b83\u4f1a\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u5217\u8868\u5bf9\u8c61\u3002<\/p>\n<\/p>\n
\u4e94\u3001\u4f7f\u7528\u661f\u53f7\u8fd0\u7b97\u7b26<\/h3>\n<\/p>\n
\u661f\u53f7\u8fd0\u7b97\u7b26\u53ef\u4ee5\u89e3\u5305\u591a\u4e2a\u5217\u8868\uff0c\u5e76\u5c06\u5b83\u4eec\u7ec4\u5408\u6210\u4e00\u4e2a\u65b0\u7684\u5217\u8868\u3002<\/p>\n<\/p>\n
list1 = [1, 3, 5]<\/p>\n
list2 = [2, 4, 6]<\/p>\n
merged_list = [*list1, *list2]<\/p>\n
print(merged_list)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u7684\u4f18\u70b9\u662f\u8bed\u6cd5\u7b80\u6d01\uff0c\u4f46\u5b83\u4f1a\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u5217\u8868\u5bf9\u8c61\u3002<\/p>\n<\/p>\n
\u516d\u3001\u4f7f\u7528\u96c6\u5408<\/h3>\n<\/p>\n
\u5982\u679c\u5217\u8868\u4e2d\u7684\u5143\u7d20\u662f\u552f\u4e00\u7684\uff0c\u53ef\u4ee5\u4f7f\u7528\u96c6\u5408\u6765\u5408\u5e76\u5217\u8868\uff0c\u5e76\u53bb\u9664\u91cd\u590d\u5143\u7d20\u3002<\/p>\n<\/p>\n
list1 = [1, 3, 5, 1]<\/p>\n
list2 = [2, 4, 6, 3]<\/p>\n
merged_set = set(list1).union(list2)<\/p>\n
merged_list = list(merged_set)<\/p>\n
print(merged_list)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u7684\u4f18\u70b9\u662f\u53ef\u4ee5\u53bb\u9664\u91cd\u590d\u5143\u7d20\uff0c\u4f46\u5b83\u4f1a\u6253\u4e71\u5143\u7d20\u7684\u987a\u5e8f\u3002<\/p>\n<\/p>\n
\u4e03\u3001\u4f7f\u7528numpy\u5e93<\/h3>\n<\/p>\n
\u5982\u679c\u4f60\u6b63\u5728\u5904\u7406\u6570\u503c\u6570\u636e\uff0cnumpy\u5e93\u63d0\u4f9b\u4e86\u4e00\u79cd\u9ad8\u6548\u7684\u5408\u5e76\u65b9\u6cd5\u3002<\/p>\n<\/p>\n
import numpy as np<\/p>\n
list1 = [1, 3, 5]<\/p>\n
list2 = [2, 4, 6]<\/p>\n
merged_array = np.concatenate((list1, list2))<\/p>\n
merged_list = merged_array.tolist()<\/p>\n
print(merged_list)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u7684\u4f18\u70b9\u662f\u9ad8\u6548\u4e14\u9002\u7528\u4e8e\u6570\u503c\u6570\u636e\uff0c\u4f46\u9700\u8981\u5bfc\u5165numpy\u5e93\u3002<\/p>\n<\/p>\n
\u516b\u3001\u4f7f\u7528pandas\u5e93<\/h3>\n<\/p>\n
\u5982\u679c\u4f60\u6b63\u5728\u5904\u7406\u6570\u636e\u5206\u6790\u4efb\u52a1\uff0cpandas\u5e93\u63d0\u4f9b\u4e86\u4e00\u79cd\u65b9\u4fbf\u7684\u5408\u5e76\u65b9\u6cd5\u3002<\/p>\n<\/p>\n
import pandas as pd<\/p>\n
list1 = [1, 3, 5]<\/p>\n
list2 = [2, 4, 6]<\/p>\n
merged_series = pd.Series(list1).append(pd.Series(list2)).reset_index(drop=True)<\/p>\n
merged_list = merged_series.tolist()<\/p>\n
print(merged_list)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u7684\u4f18\u70b9\u662f\u9002\u7528\u4e8e\u6570\u636e\u5206\u6790\u4efb\u52a1\uff0c\u4f46\u9700\u8981\u5bfc\u5165pandas\u5e93\u3002<\/p>\n<\/p>\n
\u4e5d\u3001\u6027\u80fd\u6bd4\u8f83<\/h3>\n<\/p>\n
\u5728\u9009\u62e9\u5408\u5e76\u65b9\u6cd5\u65f6\uff0c\u6027\u80fd\u662f\u4e00\u4e2a\u91cd\u8981\u7684\u8003\u8651\u56e0\u7d20\u3002\u4ee5\u4e0b\u662f\u51e0\u79cd\u5e38\u7528\u65b9\u6cd5\u7684\u6027\u80fd\u6bd4\u8f83\uff1a<\/p>\n<\/p>\n
import timeit<\/p>\n
list1 = list(range(1000))<\/p>\n
list2 = list(range(1000))<\/p>\n
print(timeit.timeit('list1 + list2', globals=globals(), number=10000))<\/p>\n
print(timeit.timeit('list1.extend(list2)', globals=globals(), number=10000))<\/p>\n
print(timeit.timeit('list(itertools.chain(list1, list2))', globals=globals(), number=10000, setup='import itertools'))<\/p>\n
print(timeit.timeit('[item for sublist in [list1, list2] for item in sublist]', globals=globals(), number=10000))<\/p>\n
print(timeit.timeit('[*list1, *list2]', globals=globals(), number=10000))<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u901a\u8fc7\u4ee5\u4e0a\u6027\u80fd\u6bd4\u8f83\uff0c\u4f60\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u3002\u5bf9\u4e8e\u5927\u591a\u6570\u60c5\u51b5\uff0c\u4f7f\u7528extend()\u65b9\u6cd5\u662f\u6700\u4f73\u9009\u62e9\uff0c\u56e0\u4e3a\u5b83\u5728\u539f\u5730\u4fee\u6539\u5217\u8868\uff0c\u6027\u80fd\u8f83\u9ad8\u3002<\/p>\n<\/p>\n
\u5341\u3001\u603b\u7ed3<\/h3>\n<\/p>\n
\u5408\u5e76\u4e24\u4e2a\u65e0\u5e8f\u7684Python\u5217\u8868\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u6cd5\u5b9e\u73b0\uff0c\u5305\u62ec\u4f7f\u7528\u52a0\u53f7\u8fd0\u7b97\u7b26\u3001extend()\u65b9\u6cd5\u3001itertools.chain()\u51fd\u6570\u7b49\u3002\u4e0d\u540c\u7684\u65b9\u6cd5\u6709\u4e0d\u540c\u7684\u4f18\u7f3a\u70b9\uff0c\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u53d6\u51b3\u4e8e\u5177\u4f53\u9700\u6c42\u548c\u6570\u636e\u96c6\u7684\u5927\u5c0f\u3002\u5bf9\u4e8e\u5927\u591a\u6570\u60c5\u51b5\uff0c\u63a8\u8350\u4f7f\u7528extend()\u65b9\u6cd5\uff0c\u56e0\u4e3a\u5b83\u5728\u539f\u5730\u4fee\u6539\u5217\u8868\uff0c\u6027\u80fd\u8f83\u9ad8\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
 \u5982\u4f55\u4f7f\u7528Python\u5408\u5e76\u4e24\u4e2a\u65e0\u5e8f\u5217\u8868\uff0c\u786e\u4fdd\u7ed3\u679c\u662f\u552f\u4e00\u7684\uff1f<\/strong>
\u5728Python\u4e2d\uff0c\u5408\u5e76\u4e24\u4e2a\u65e0\u5e8f\u5217\u8868\u5e76\u53bb\u91cd\uff0c\u53ef\u4ee5\u4f7f\u7528\u96c6\u5408\uff08set\uff09\u6765\u5b9e\u73b0\u3002\u5c06\u4e24\u4e2a\u5217\u8868\u8f6c\u6362\u4e3a\u96c6\u5408\u540e\uff0c\u518d\u5c06\u5b83\u4eec\u5408\u5e76\u5e76\u8f6c\u6362\u56de\u5217\u8868\u3002\u4f8b\u5982\uff1a  <\/p>\n
list1 = [1, 2, 3, 4]\nlist2 = [3, 4, 5, 6]\nmerged_list = list(set(list1) | set(list2))\n<\/code><\/pre>\n
\u8fd9\u6837\u53ef\u4ee5\u5f97\u5230\u4e00\u4e2a\u5305\u542b\u6240\u6709\u552f\u4e00\u5143\u7d20\u7684\u5217\u8868\u3002<\/p>\n
\u5728\u5408\u5e76\u5217\u8868\u65f6\uff0c\u5982\u4f55\u4fdd\u6301\u539f\u6709\u7684\u5143\u7d20\u987a\u5e8f\uff1f<\/strong>
\u5982\u679c\u5e0c\u671b\u5728\u5408\u5e76\u4e24\u4e2a\u5217\u8868\u65f6\u4fdd\u6301\u5143\u7d20\u7684\u51fa\u73b0\u987a\u5e8f\uff0c\u53ef\u4ee5\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f\u7ed3\u5408\u96c6\u5408\u6765\u53bb\u91cd\u3002\u793a\u4f8b\u5982\u4e0b\uff1a  <\/p>\n
list1 = [1, 2, 3, 4]\nlist2 = [3, 4, 5, 6]\nmerged_list = []\nmerged_list.extend(list1)\nmerged_list.extend(x for x in list2 if x not in merged_list)\n<\/code><\/pre>\n
\u8fd9\u6837\u5904\u7406\u540e\uff0c\u7ed3\u679c\u5217\u8868\u5c06\u4fdd\u7559\u7b2c\u4e00\u4e2a\u5217\u8868\u7684\u987a\u5e8f\uff0c\u5e76\u5728\u5176\u540e\u6dfb\u52a0\u7b2c\u4e8c\u4e2a\u5217\u8868\u4e2d\u672a\u51fa\u73b0\u7684\u5143\u7d20\u3002<\/p>\n
\u5408\u5e76\u4e24\u4e2a\u5217\u8868\u540e\uff0c\u5982\u4f55\u5bf9\u7ed3\u679c\u8fdb\u884c\u6392\u5e8f\uff1f<\/strong>
\u5728\u5408\u5e76\u4e24\u4e2a\u65e0\u5e8f\u5217\u8868\u540e\uff0c\u5982\u679c\u9700\u8981\u5bf9\u7ed3\u679c\u8fdb\u884c\u6392\u5e8f\uff0c\u53ef\u4ee5\u4f7f\u7528Python\u7684\u5185\u7f6e sorted()<\/code> \u51fd\u6570\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a  <\/p>\n
list1 = [4, 2, 3, 1]\nlist2 = [6, 5, 7, 8]\nmerged_list = list1 + list2\nsorted_list = sorted(merged_list)\n<\/code><\/pre>\n
\u8fd9\u6837\u5f97\u5230\u7684 sorted_list<\/code> \u5c06\u662f\u4e00\u4e2a\u5347\u5e8f\u6392\u5217\u7684\u5217\u8868\uff0c\u5305\u542b\u4e86\u4e24\u4e2a\u5217\u8868\u4e2d\u7684\u6240\u6709\u5143\u7d20\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u8981\u5408\u5e76\u4e24\u4e2a\u65e0\u5e8f\u7684Python\u5217\u8868\uff0c\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u6cd5\u5b9e\u73b0\uff0c\u5305\u62ec\u4f7f\u7528\u52a0\u53f7\u8fd0\u7b97\u7b26\u3001extend()\u65b9\u6cd5\u3001\u4f7f\u7528iter […]","protected":false},"author":3,"featured_media":1103255,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1103238"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=1103238"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1103238\/revisions"}],"predecessor-version":[{"id":1103263,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1103238\/revisions\/1103263"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1103255"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1103238"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1103238"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1103238"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}