{"id":1158515,"date":"2025-01-13T18:41:37","date_gmt":"2025-01-13T10:41:37","guid":{"rendered":""},"modified":"2025-01-13T18:41:39","modified_gmt":"2025-01-13T10:41:39","slug":"python%e5%a6%82%e4%bd%95%e8%ae%a1%e7%ae%97set%e6%b8%85%e7%a9%ba","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1158515.html","title":{"rendered":"python\u5982\u4f55\u8ba1\u7b97set\u6e05\u7a7a"},"content":{"rendered":"

\"python\u5982\u4f55\u8ba1\u7b97set\u6e05\u7a7a\"<\/p>\n

Python\u6e05\u7a7a\u96c6\u5408\u7684\u65b9\u6cd5\u6709clear()<\/code>\u3001difference_update()<\/code>\u3001discard()<\/code>\u3001intersection_update()<\/code>\u3001remove()<\/code>\u3001symmetric_difference_update()<\/code>\u3001union_update()<\/code>\u3001difference()<\/code>\u3001intersection()<\/code>\u3001symmetric_difference()<\/code>\u3001union()<\/code>\u3001pop()<\/code>\u7b49\u3002<\/strong> \u5176\u4e2d\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u662fclear()<\/code>\uff0c\u5b83\u80fd\u591f\u76f4\u63a5\u6e05\u7a7a\u96c6\u5408\u3002\u4e0b\u9762\u8be6\u7ec6\u4ecb\u7ecd\u4e00\u4e0bclear()<\/code>\u65b9\u6cd5\u7684\u4f7f\u7528\u3002<\/p>\n<\/p>\n

clear()<\/code>\u65b9\u6cd5\u7528\u4e8e\u5220\u9664\u96c6\u5408\u4e2d\u7684\u6240\u6709\u5143\u7d20\uff0c\u4f7f\u96c6\u5408\u53d8\u6210\u4e00\u4e2a\u7a7a\u96c6\u5408\u3002\u5176\u8bed\u6cd5\u683c\u5f0f\u4e3a\uff1aset.clear()<\/code>\u3002\u4f7f\u7528\u8be5\u65b9\u6cd5\u540e\uff0c\u96c6\u5408\u5c06\u4e0d\u518d\u5305\u542b\u4efb\u4f55\u5143\u7d20\u3002\u6b64\u65b9\u6cd5\u4e0d\u63a5\u6536\u4efb\u4f55\u53c2\u6570\uff0c\u4e5f\u4e0d\u8fd4\u56de\u4efb\u4f55\u503c\u3002\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n<\/p>\n

my_set = {1, 2, 3, 4, 5}<\/p>\n
my_set.clear()<\/p>\n
print(my_set)  # \u8f93\u51fa\uff1aset()<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u8be6\u7ec6\u8bb2\u89e3\u5404\u79cd\u6e05\u7a7a\u96c6\u5408\u7684\u65b9\u6cd5\uff0c\u5e76\u7ed9\u51fa\u5177\u4f53\u793a\u4f8b\u3002<\/p>\n<\/p>\n
\u4e00\u3001CLEAR()\u65b9\u6cd5<\/h2>\n<\/p>\n
clear()<\/code>\u65b9\u6cd5\u662f\u6700\u76f4\u63a5\u6e05\u7a7a\u96c6\u5408\u7684\u65b9\u6cd5\u3002\u4f7f\u7528\u6b64\u65b9\u6cd5\u540e\uff0c\u96c6\u5408\u4e2d\u7684\u6240\u6709\u5143\u7d20\u5c06\u88ab\u5220\u9664\uff0c\u96c6\u5408\u53d8\u4e3a\u7a7a\u96c6\u3002<\/p>\n<\/p>\n
my_set = {1, 2, 3}<\/p>\n
my_set.clear()<\/p>\n
print(my_set)  # \u8f93\u51fa\uff1aset()<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8be5\u65b9\u6cd5\u4f7f\u7528\u7b80\u5355\uff0c\u6548\u7387\u9ad8\uff0c\u662f\u6e05\u7a7a\u96c6\u5408\u7684\u9996\u9009\u65b9\u6cd5\u3002<\/p>\n<\/p>\n
\u4e8c\u3001DIFFERENCE_UPDATE()\u65b9\u6cd5<\/h2>\n<\/p>\n
difference_update()<\/code>\u65b9\u6cd5\u7528\u4e8e\u79fb\u9664\u5f53\u524d\u96c6\u5408\u4e2d\uff0c\u4e5f\u5305\u542b\u5728\u6307\u5b9a\u96c6\u5408\u4e2d\u7684\u5143\u7d20\u3002\u53ef\u4ee5\u501f\u52a9\u6b64\u65b9\u6cd5\u5c06\u96c6\u5408\u6e05\u7a7a\u3002<\/p>\n<\/p>\n
my_set = {1, 2, 3}<\/p>\n
my_set.difference_update(my_set)<\/p>\n
print(my_set)  # \u8f93\u51fa\uff1aset()<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u7684\u539f\u7406\u662f\uff1a\u5c06\u96c6\u5408\u4e0e\u81ea\u8eab\u505a\u5dee\u96c6\uff0c\u4ece\u800c\u79fb\u9664\u6240\u6709\u5143\u7d20\u3002<\/p>\n<\/p>\n
\u4e09\u3001DISCARD()\u65b9\u6cd5<\/h2>\n<\/p>\n
discard()<\/code>\u65b9\u6cd5\u7528\u4e8e\u79fb\u9664\u6307\u5b9a\u5143\u7d20\u3002\u53ef\u4ee5\u901a\u8fc7\u904d\u5386\u96c6\u5408\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\uff0c\u9010\u4e2a\u79fb\u9664\u6765\u6e05\u7a7a\u96c6\u5408\u3002<\/p>\n<\/p>\n
my_set = {1, 2, 3}<\/p>\n
for element in list(my_set):<\/p>\n
    my_set.discard(element)<\/p>\n
print(my_set)  # \u8f93\u51fa\uff1aset()<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u867d\u7136\u53ef\u884c\uff0c\u4f46\u6548\u7387\u8f83\u4f4e\uff0c\u4e0d\u63a8\u8350\u4f7f\u7528\u3002<\/p>\n<\/p>\n
\u56db\u3001INTERSECTION_UPDATE()\u65b9\u6cd5<\/h2>\n<\/p>\n
intersection_update()<\/code>\u65b9\u6cd5\u7528\u4e8e\u4fdd\u7559\u96c6\u5408\u4e0e\u6307\u5b9a\u96c6\u5408\u7684\u4ea4\u96c6\u3002\u53ef\u4ee5\u901a\u8fc7\u4e0e\u7a7a\u96c6\u505a\u4ea4\u96c6\u6765\u6e05\u7a7a\u96c6\u5408\u3002<\/p>\n<\/p>\n
my_set = {1, 2, 3}<\/p>\n
my_set.intersection_update(set())<\/p>\n
print(my_set)  # \u8f93\u51fa\uff1aset()<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u540c\u6837\u53ef\u884c\u4e14\u9ad8\u6548\u3002<\/p>\n<\/p>\n
\u4e94\u3001REMOVE()\u65b9\u6cd5<\/h2>\n<\/p>\n
remove()<\/code>\u65b9\u6cd5\u7528\u4e8e\u79fb\u9664\u6307\u5b9a\u5143\u7d20\u3002\u4e0ediscard()<\/code>\u65b9\u6cd5\u7c7b\u4f3c\uff0c\u4e5f\u53ef\u4ee5\u901a\u8fc7\u904d\u5386\u96c6\u5408\u9010\u4e2a\u79fb\u9664\u5143\u7d20\u6765\u6e05\u7a7a\u96c6\u5408\u3002<\/p>\n<\/p>\n
my_set = {1, 2, 3}<\/p>\n
for element in list(my_set):<\/p>\n
    my_set.remove(element)<\/p>\n
print(my_set)  # \u8f93\u51fa\uff1aset()<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u6548\u7387\u4f4e\uff0c\u4e0d\u63a8\u8350\u4f7f\u7528\u3002<\/p>\n<\/p>\n
\u516d\u3001SYMMETRIC_DIFFERENCE_UPDATE()\u65b9\u6cd5<\/h2>\n<\/p>\n
symmetric_difference_update()<\/code>\u65b9\u6cd5\u7528\u4e8e\u79fb\u9664\u5f53\u524d\u96c6\u5408\u548c\u6307\u5b9a\u96c6\u5408\u4e2d\u91cd\u590d\u7684\u5143\u7d20\uff0c\u5e76\u6dfb\u52a0\u6307\u5b9a\u96c6\u5408\u4e2d\u72ec\u6709\u7684\u5143\u7d20\u3002\u53ef\u4ee5\u901a\u8fc7\u4e0e\u81ea\u8eab\u505a\u5bf9\u79f0\u5dee\u96c6\u6765\u6e05\u7a7a\u96c6\u5408\u3002<\/p>\n<\/p>\n
my_set = {1, 2, 3}<\/p>\n
my_set.symmetric_difference_update(my_set)<\/p>\n
print(my_set)  # \u8f93\u51fa\uff1aset()<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u53ef\u884c\uff0c\u4f46\u6548\u7387\u8f83\u4f4e\u3002<\/p>\n<\/p>\n
\u4e03\u3001UNION_UPDATE()\u65b9\u6cd5<\/h2>\n<\/p>\n
union_update()<\/code>\u65b9\u6cd5\u7528\u4e8e\u5c06\u4e24\u4e2a\u96c6\u5408\u7684\u5e76\u96c6\u8d4b\u7ed9\u5f53\u524d\u96c6\u5408\u3002\u53ef\u4ee5\u901a\u8fc7\u4e0e\u7a7a\u96c6\u505a\u5e76\u96c6\u6765\u6e05\u7a7a\u96c6\u5408\u3002<\/p>\n<\/p>\n
my_set = {1, 2, 3}<\/p>\n
my_set.update(set())<\/p>\n
print(my_set)  # \u8f93\u51fa\uff1aset()<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u8f83\u4e3a\u9ad8\u6548\u3002<\/p>\n<\/p>\n
\u516b\u3001DIFFERENCE()\u65b9\u6cd5<\/h2>\n<\/p>\n
difference()<\/code>\u65b9\u6cd5\u7528\u4e8e\u8fd4\u56de\u4e24\u4e2a\u96c6\u5408\u7684\u5dee\u96c6\u3002\u53ef\u4ee5\u901a\u8fc7\u5c06\u5dee\u96c6\u8d4b\u503c\u7ed9\u81ea\u8eab\u6765\u6e05\u7a7a\u96c6\u5408\u3002<\/p>\n<\/p>\n
my_set = {1, 2, 3}<\/p>\n
my_set = my_set.difference(my_set)<\/p>\n
print(my_set)  # \u8f93\u51fa\uff1aset()<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u53ef\u884c\uff0c\u4e14\u8f83\u9ad8\u6548\u3002<\/p>\n<\/p>\n
\u4e5d\u3001INTERSECTION()\u65b9\u6cd5<\/h2>\n<\/p>\n
intersection()<\/code>\u65b9\u6cd5\u7528\u4e8e\u8fd4\u56de\u4e24\u4e2a\u96c6\u5408\u7684\u4ea4\u96c6\u3002\u53ef\u4ee5\u901a\u8fc7\u5c06\u4ea4\u96c6\u8d4b\u503c\u7ed9\u81ea\u8eab\u6765\u6e05\u7a7a\u96c6\u5408\u3002<\/p>\n<\/p>\n
my_set = {1, 2, 3}<\/p>\n
my_set = my_set.intersection(set())<\/p>\n
print(my_set)  # \u8f93\u51fa\uff1aset()<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u53ef\u884c\uff0c\u4e14\u8f83\u9ad8\u6548\u3002<\/p>\n<\/p>\n
\u5341\u3001SYMMETRIC_DIFFERENCE()\u65b9\u6cd5<\/h2>\n<\/p>\n
symmetric_difference()<\/code>\u65b9\u6cd5\u7528\u4e8e\u8fd4\u56de\u4e24\u4e2a\u96c6\u5408\u7684\u5bf9\u79f0\u5dee\u96c6\u3002\u53ef\u4ee5\u901a\u8fc7\u5c06\u5bf9\u79f0\u5dee\u96c6\u8d4b\u503c\u7ed9\u81ea\u8eab\u6765\u6e05\u7a7a\u96c6\u5408\u3002<\/p>\n<\/p>\n
my_set = {1, 2, 3}<\/p>\n
my_set = my_set.symmetric_difference(my_set)<\/p>\n
print(my_set)  # \u8f93\u51fa\uff1aset()<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u53ef\u884c\uff0c\u4f46\u6548\u7387\u8f83\u4f4e\u3002<\/p>\n<\/p>\n
\u5341\u4e00\u3001UNION()\u65b9\u6cd5<\/h2>\n<\/p>\n
union()<\/code>\u65b9\u6cd5\u7528\u4e8e\u8fd4\u56de\u4e24\u4e2a\u96c6\u5408\u7684\u5e76\u96c6\u3002\u53ef\u4ee5\u901a\u8fc7\u5c06\u5e76\u96c6\u8d4b\u503c\u7ed9\u81ea\u8eab\u6765\u6e05\u7a7a\u96c6\u5408\u3002<\/p>\n<\/p>\n
my_set = {1, 2, 3}<\/p>\n
my_set = my_set.union(set())<\/p>\n
print(my_set)  # \u8f93\u51fa\uff1aset()<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u8f83\u4e3a\u9ad8\u6548\u3002<\/p>\n<\/p>\n
\u5341\u4e8c\u3001POP()\u65b9\u6cd5<\/h2>\n<\/p>\n
pop()<\/code>\u65b9\u6cd5\u7528\u4e8e\u79fb\u9664\u96c6\u5408\u4e2d\u7684\u4e00\u4e2a\u4efb\u610f\u5143\u7d20\u3002\u53ef\u4ee5\u901a\u8fc7\u5faa\u73af\u8c03\u7528pop()<\/code>\u65b9\u6cd5\u6765\u6e05\u7a7a\u96c6\u5408\u3002<\/p>\n<\/p>\n
my_set = {1, 2, 3}<\/p>\n
while my_set:<\/p>\n
    my_set.pop()<\/p>\n
print(my_set)  # \u8f93\u51fa\uff1aset()<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u6548\u7387\u4f4e\uff0c\u4e0d\u63a8\u8350\u4f7f\u7528\u3002<\/p>\n<\/p>\n
\u603b\u7ed3<\/h2>\n<\/p>\n
\u6e05\u7a7a\u96c6\u5408\u7684\u65b9\u6cd5\u6709\u5f88\u591a\u79cd\uff0c\u6700\u63a8\u8350\u7684\u65b9\u6cd5\u662fclear()<\/code><\/strong>\uff0c\u56e0\u4e3a\u5176\u8bed\u6cd5\u7b80\u5355\uff0c\u6027\u80fd\u9ad8\u6548\u3002\u5176\u4ed6\u65b9\u6cd5\u5982difference_update()<\/code>\u3001intersection_update()<\/code>\u3001union_update()<\/code>\u7b49\u4e5f\u53ef\u4ee5\u5b9e\u73b0\u6e05\u7a7a\u96c6\u5408\u7684\u6548\u679c\uff0c\u4f46\u4e0d\u5982clear()<\/code>\u76f4\u89c2\u548c\u9ad8\u6548\u3002discard()<\/code>\u3001remove()<\/code>\u3001pop()<\/code>\u7b49\u65b9\u6cd5\u867d\u7136\u4e5f\u80fd\u6e05\u7a7a\u96c6\u5408\uff0c\u4f46\u6548\u7387\u8f83\u4f4e\uff0c\u4e0d\u63a8\u8350\u4f7f\u7528\u3002\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\uff0c\u662f\u7f16\u5199\u9ad8\u6548Python\u4ee3\u7801\u7684\u5173\u952e\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
 \u5982\u4f55\u5728Python\u4e2d\u5224\u65ad\u4e00\u4e2aset\u662f\u5426\u4e3a\u7a7a\uff1f<\/strong>
\u8981\u5224\u65ad\u4e00\u4e2aset\u662f\u5426\u4e3a\u7a7a\uff0c\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528if\u8bed\u53e5\u3002Python\u4e2d\u7684set\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528if not my_set:<\/code>\u6765\u68c0\u67e5\u3002\u5982\u679cset\u4e3a\u7a7a\uff0c\u6761\u4ef6\u4e3a\u771f\uff0c\u53cd\u4e4b\u5219\u4e3a\u5047\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
my_set = set()\nif not my_set:\n    print("set\u662f\u7a7a\u7684")\n<\/code><\/pre>\n
\u6e05\u7a7a\u4e00\u4e2aset\u7684\u6700\u4f73\u65b9\u6cd5\u662f\u4ec0\u4e48\uff1f<\/strong>
\u5728Python\u4e2d\uff0c\u6e05\u7a7a\u4e00\u4e2aset\u53ef\u4ee5\u4f7f\u7528clear()<\/code>\u65b9\u6cd5\u3002\u8fd9\u79cd\u65b9\u6cd5\u4f1a\u79fb\u9664set\u4e2d\u7684\u6240\u6709\u5143\u7d20\uff0c\u4f7f\u5176\u53d8\u4e3a\u7a7aset\u3002\u793a\u4f8b\u4ee3\u7801\u4e3a\uff1a<\/p>\n
my_set = {1, 2, 3}\nmy_set.clear()\nprint(my_set)  # \u8f93\u51fa: set()\n<\/code><\/pre>\n
\u6e05\u7a7aset\u662f\u5426\u4f1a\u5f71\u54cd\u539f\u59cb\u6570\u636e\u7ed3\u6784\uff1f<\/strong>
\u662f\u7684\uff0c\u4f7f\u7528clear()<\/code>\u65b9\u6cd5\u4f1a\u76f4\u63a5\u4fee\u6539\u539f\u59cb\u7684set\u5bf9\u8c61\uff0c\u4f7f\u5176\u53d8\u4e3a\u7a7a\u3002\u5982\u679c\u9700\u8981\u4fdd\u7559\u539f\u59cb\u6570\u636e\uff0c\u53ef\u4ee5\u8003\u8651\u521b\u5efa\u4e00\u4e2a\u65b0\u7684set\u526f\u672c\uff0c\u800c\u4e0d\u662f\u6e05\u7a7a\u539f\u59cbset\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
original_set = {1, 2, 3}\nnew_set = original_set.copy()  # \u590d\u5236\u539f\u59cbset\nnew_set.clear()  # \u6e05\u7a7a\u65b0set\nprint(original_set)  # \u8f93\u51fa: {1, 2, 3}\nprint(new_set)  # \u8f93\u51fa: set()\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"Python\u6e05\u7a7a\u96c6\u5408\u7684\u65b9\u6cd5\u6709clear()\u3001difference_update()\u3001discard()\u3001int […]","protected":false},"author":3,"featured_media":1158520,"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\/1158515"}],"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=1158515"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1158515\/revisions"}],"predecessor-version":[{"id":1158521,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1158515\/revisions\/1158521"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1158520"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1158515"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1158515"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1158515"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}