<\/span><\/h2>\n\n\n\n\u76ee\u6807<\/strong>\uff1a\u7406\u89e3\u96c6\u5408\u7684\u521b\u5efa\u53ca\u6dfb\u52a0\u3001\u5220\u9664\u5143\u7d20\u3002<\/p>\n\n\n\n# \u521b\u5efa\u96c6\u5408<\/em>
my_set = {1, 2, 3}
print(\"\u521d\u59cb\u96c6\u5408:\", my_set)
# \u6dfb\u52a0\u5143\u7d20<\/em>
my_set.add(4)
print(\"\u6dfb\u52a0\u5143\u7d20\u540e:\", my_set)
# \u5220\u9664\u5143\u7d20<\/em>
my_set.remove(2)
print(\"\u5220\u9664\u5143\u7d20\u540e:\", my_set)<\/code><\/pre>\n\n\n\n\u8f93\u51fa<\/strong>\uff1a<\/p>\n\n\n\n\u521d\u59cb\u96c6\u5408: {1, 2, 3}
\u6dfb\u52a0\u5143\u7d20\u540e: {1, 2, 3, 4}
\u5220\u9664\u5143\u7d20\u540e: {1, 3, 4}<\/code><\/pre>\n\n\n\n\u6ce8\u610f<\/strong>\uff1aadd()<\/code>\u7528\u4e8e\u6dfb\u52a0\u5143\u7d20\uff0cremove()<\/code>\u7528\u4e8e\u5220\u9664\u5143\u7d20\uff0c\u82e5\u5143\u7d20\u4e0d\u5b58\u5728\u4f1a\u629b\u51fa\u5f02\u5e38\u3002<\/p>\n\n\n\n<\/span>\u6848\u4f8b2\uff1a\u96c6\u5408\u7684\u5e76\u96c6<\/strong><\/span><\/h2>\n\n\n\n\u76ee\u6807<\/strong>\uff1a\u5408\u5e76\u4e24\u4e2a\u96c6\u5408\u7684\u6240\u6709\u5143\u7d20\u3002<\/p>\n\n\n\nset1 = {1, 2, 3}
set2 = {2, 3, 4}
union_set = set1.union(set2)
print(\"\u5e76\u96c6:\", union_set)<\/code><\/pre>\n\n\n\n\u8f93\u51fa<\/strong>\uff1a<\/p>\n\n\n\n\u5e76\u96c6: {1, 2, 3, 4}<\/code><\/pre>\n\n\n\n\u6280\u5de7<\/strong>\uff1a\u4f7f\u7528|<\/code>\u4e5f\u53ef\u4ee5\u5b9e\u73b0\u5e76\u96c6\u64cd\u4f5c\uff0c\u5982set1 | set2<\/code>\u3002<\/p>\n\n\n\n<\/span>\u6848\u4f8b3\uff1a\u4ea4\u96c6<\/strong><\/span><\/h2>\n\n\n\n\u76ee\u6807<\/strong>\uff1a\u627e\u51fa\u4e24\u4e2a\u96c6\u5408\u5171\u6709\u7684\u5143\u7d20\u3002<\/p>\n\n\n\nset1 = {1, 2, 3, 4}
set2 = {2, 3, 4, 5}
intersection = set1.intersection(set2)
print(\"\u4ea4\u96c6:\", intersection)<\/code><\/pre>\n\n\n\n\u8f93\u51fa<\/strong>\uff1a<\/p>\n\n\n\n\u4ea4\u96c6: {2, 3, 4}<\/code><\/pre>\n\n\n\n\u5c0f\u8d34\u58eb<\/strong>\uff1a&<\/code>\u662f\u4ea4\u96c6\u7684\u5feb\u6377\u7b26\u53f7\uff0c\u4f8b\u5982set1 & set2<\/code>\u3002<\/p>\n\n\n\n<\/span>\u6848\u4f8b4\uff1a\u5dee\u96c6<\/strong><\/span><\/h2>\n\n\n\n\u76ee\u6807<\/strong>\uff1a\u627e\u51fa\u5728\u4e00\u4e2a\u96c6\u5408\u4e2d\u4f46\u4e0d\u5728\u53e6\u4e00\u4e2a\u96c6\u5408\u4e2d\u7684\u5143\u7d20\u3002<\/p>\n\n\n\nset1 = {1, 2, 3, 4}
set2 = {3, 4, 5, 6}
difference = set1.difference(set2)
print(\"\u5dee\u96c6:\", difference)<\/code><\/pre>\n\n\n\n\u8f93\u51fa<\/strong>\uff1a<\/p>\n\n\n\n\u5dee\u96c6: {1, 2}<\/code><\/pre>\n\n\n\n\u4f7f\u7528\u63d0\u793a<\/strong>\uff1a\u4e5f\u53ef\u4ee5\u7528-<\/code>\u64cd\u4f5c\u7b26\u6765\u8868\u793a\u5dee\u96c6\uff0c\u5982set1 - set2<\/code>\u3002<\/p>\n\n\n\n<\/span>\u6848\u4f8b5\uff1a\u5bf9\u79f0\u5dee\u96c6<\/strong><\/span><\/h2>\n\n\n\n\u76ee\u6807<\/strong>\uff1a\u627e\u51fa\u4e24\u4e2a\u96c6\u5408\u91cc\u72ec\u6709\u7684\u5143\u7d20\uff0c\u5373\u975e\u4ea4\u96c6\u90e8\u5206\u3002<\/p>\n\n\n\nset1 = {1, 2, 3, 4}
set2 = {3, 4, 5, 6}
symmetric_difference = set1.symmetric_difference(set2)
print(\"\u5bf9\u79f0\u5dee\u96c6:\", symmetric_difference)<\/code><\/pre>\n\n\n\n\u8f93\u51fa<\/strong>\uff1a<\/p>\n\n\n\n\u5bf9\u79f0\u5dee\u96c6: {1, 2, 5, 6}<\/code><\/pre>\n\n\n\n\u5feb\u6377\u65b9\u5f0f<\/strong>\uff1a^<\/code>\u7b26\u53f7\u53ef\u4ee5\u7528\u6765\u5feb\u901f\u8ba1\u7b97\u5bf9\u79f0\u5dee\u96c6\uff0c\u5982set1 ^ set2<\/code>\u3002<\/p>\n\n\n\n<\/span>\u6848\u4f8b6\uff1a\u96c6\u5408\u7684\u5b50\u96c6\u548c\u8d85\u96c6<\/strong><\/span><\/h2>\n\n\n\n\u76ee\u6807<\/strong>\uff1a\u5224\u65ad\u4e00\u4e2a\u96c6\u5408\u662f\u5426\u662f\u53e6\u4e00\u4e2a\u96c6\u5408\u7684\u5b50\u96c6\u6216\u8d85\u96c6\u3002<\/p>\n\n\n\nsubset = {1, 2}
superset = {1, 2, 3, 4}
print(\"subset\u662fsuperset\u7684\u5b50\u96c6\u5417?\", subset.issubset(superset))
print(\"superset\u662fsubset\u7684\u8d85\u96c6\u5417?\", superset.issuperset(subset))<\/code><\/pre>\n\n\n\n\u8f93\u51fa<\/strong>\uff1a<\/p>\n\n\n\nsubset\u662fsuperset\u7684\u5b50\u96c6\u5417? True
superset\u662fsubset\u7684\u8d85\u96c6\u5417? True<\/code><\/pre>\n\n\n\n<\/span>\u6848\u4f8b7\uff1a\u96c6\u5408\u63a8\u5bfc\u5f0f<\/strong><\/span><\/h2>\n\n\n\n\u76ee\u6807<\/strong>\uff1a\u5229\u7528\u96c6\u5408\u63a8\u5bfc\u5f0f\u5feb\u901f\u751f\u6210\u96c6\u5408\u3002<\/p>\n\n\n\nsquares = {x**2 for x in range(1, 6)}
print(\"\u5e73\u65b9\u6570\u96c6\u5408:\", squares)<\/code><\/pre>\n\n\n\n\u8f93\u51fa<\/strong>\uff1a<\/p>\n\n\n\n\u5e73\u65b9\u6570\u96c6\u5408: {1, 4, 9, 16, 25}<\/code><\/pre>\n\n\n\n\u89e3\u91ca<\/strong>\uff1a\u96c6\u5408\u63a8\u5bfc\u5f0f\u662f\u4e00\u79cd\u7b80\u6d01\u7684\u521b\u5efa\u96c6\u5408\u7684\u65b9\u5f0f\uff0c\u7c7b\u4f3c\u4e8e\u5217\u8868\u63a8\u5bfc\u5f0f\u3002<\/p>\n\n\n\n<\/span>\u6848\u4f8b8\uff1a\u96c6\u5408\u4e0e\u5b57\u7b26\u4e32<\/strong><\/span><\/h2>\n\n\n\n\u76ee\u6807<\/strong>\uff1a\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u5b57\u7b26\u96c6\u5408\uff0c\u7528\u4e8e\u53bb\u91cd\u3002<\/p>\n\n\n\nmy_string = \"hello\"
unique_chars = set(my_string)
print(\"\u53bb\u91cd\u540e\u7684\u5b57\u7b26\u96c6\u5408:\", unique_chars)<\/code><\/pre>\n\n\n\n\u8f93\u51fa<\/strong>\uff1a<\/p>\n\n\n\n\u53bb\u91cd\u540e\u7684\u5b57\u7b26\u96c6\u5408: {'o', 'l', 'e', 'h'}<\/code><\/pre>\n\n\n\n\u5e94\u7528\u573a\u666f<\/strong>\uff1a\u5e38\u7528\u4e8e\u7edf\u8ba1\u6587\u672c\u4e2d\u4e0d\u91cd\u590d\u5b57\u7b26\u7684\u6570\u91cf\u3002<\/p>\n\n\n\n<\/span>\u6848\u4f8b9\uff1a\u96c6\u5408\u4e0e\u8fed\u4ee3<\/strong><\/span><\/h2>\n\n\n\n\u76ee\u6807<\/strong>\uff1a\u904d\u5386\u96c6\u5408\u5e76\u6267\u884c\u64cd\u4f5c\u3002<\/p>\n\n\n\nnumbers = {1, 2, 3}
for num in numbers:
print(num ** 2)<\/code><\/pre>\n\n\n\n\u8f93\u51fa<\/strong>\uff1a<\/p>\n\n\n\n1
4
9<\/code><\/pre>\n\n\n\n\u63d0\u793a<\/strong>\uff1a\u96c6\u5408\u4e0d\u9002\u5408\u9700\u8981\u987a\u5e8f\u8bbf\u95ee\u7684\u573a\u5408\uff0c\u56e0\u4e3a\u5b83\u4eec\u662f\u65e0\u5e8f\u7684\u3002<\/p>\n\n\n\n<\/span>\u6848\u4f8b10\uff1a\u5b9e\u9645\u573a\u666f\u5e94\u7528\uff1a\u6570\u636e\u6e05\u6d17<\/strong><\/span><\/h2>\n\n\n\n\u76ee\u6807<\/strong>\uff1a\u4f7f\u7528\u96c6\u5408\u53bb\u9664\u91cd\u590d\u6570\u636e\u3002<\/p>\n\n\n\n\u5047\u8bbe\u6211\u4eec\u6709\u4e24\u4e2a\u5217\u8868\uff0c\u5206\u522b\u4ee3\u8868\u6570\u636e\u5e93\u7684\u4e24\u6b21\u67e5\u8be2\u7ed3\u679c\uff0c\u6211\u4eec\u9700\u8981\u5408\u5e76\u8fd9\u4e9b\u7ed3\u679c\u5e76\u53bb\u9664\u91cd\u590d\u9879\u3002<\/p>\n\n\n\n
query_result_1 = [101, 102, 103]
query_result_2 = [103, 104, 105]
# \u4f7f\u7528\u96c6\u5408\u5408\u5e76\u5e76\u53bb\u91cd<\/em>
unique_results = set(query_result_1 + query_result_2)
print(\"\u53bb\u91cd\u540e\u7684\u7ed3\u679c:\", unique_results)<\/code><\/pre>\n\n\n\n\u8f93\u51fa<\/strong>\uff1a<\/p>\n\n\n\n\u53bb\u91cd\u540e\u7684\u7ed3\u679c: {101, 102, 103, 104, 105}<\/code><\/pre>\n\n\n\n\u5b9e\u8df5\u6280\u5de7<\/strong>\uff1a\u96c6\u5408\u64cd\u4f5c\u5728\u6570\u636e\u6e05\u6d17\u548c\u9884\u5904\u7406\u4e2d\u975e\u5e38\u6709\u7528\uff0c\u7279\u522b\u662f\u5f53\u9700\u8981\u5feb\u901f\u53bb\u9664\u91cd\u590d\u9879\u65f6\u3002<\/p>\n\n\n\n
\n\n\n\n<\/span>\u8fdb\u9636\u5e94\u7528\uff1aPython\u96c6\u5408\u7684\u9ad8\u7ea7\u6280\u5de7\u4e0e\u5b9e\u6218\u6848\u4f8b<\/strong><\/span><\/h2>\n\n\n\n<\/span>\u9ad8\u7ea7\u6280\u5de71\uff1a\u96c6\u5408\u7684 frozenset<\/strong><\/span><\/h2>\n\n\n\n\u76ee\u6807<\/strong>\uff1a\u4e86\u89e3\u4e0d\u53ef\u53d8\u96c6\u5408frozenset<\/code>\uff0c\u53ca\u5176\u5728\u9700\u8981\u4e0d\u53ef\u53d8\u6570\u636e\u7ed3\u6784\u7684\u573a\u666f\u4e0b\u7684\u5e94\u7528\u3002<\/p>\n\n\n\n# \u521b\u5efa\u4e00\u4e2afrozenset<\/em>
frozen_set = frozenset([1, 2, 3])
try:
frozen_set.add(4) # \u5c1d\u8bd5\u6dfb\u52a0\u5143\u7d20<\/em>
except AttributeError as e:
print(e)<\/code><\/pre>\n\n\n\n\u8f93\u51fa<\/strong>\uff1a<\/p>\n\n\n\n'frozenset' object has no attribute 'add'<\/code><\/pre>\n\n\n\n\u91cd\u8981\u6027<\/strong>\uff1afrozenset<\/code>\u53ef\u7528\u4e8e\u4f5c\u4e3a\u5b57\u5178\u7684\u952e\u6216\u96c6\u5408\u7684\u5143\u7d20\uff0c\u56e0\u4e3a\u5b83\u4e0d\u53ef\u53d8\u4e14\u54c8\u5e0c\u3002<\/p>\n\n\n\n<\/span>\u9ad8\u7ea7\u6280\u5de72\uff1a\u96c6\u5408\u7684\u5f02\u6216\u64cd\u4f5c<\/strong><\/span><\/h2>\n\n\n\n\u76ee\u6807<\/strong>\uff1a\u7406\u89e3\u5f02\u6216\u64cd\u4f5c^<\/code>\u5728\u96c6\u5408\u4e2d\u7684\u5e94\u7528\uff0c\u7528\u4e8e\u627e\u51fa\u4e24\u4e2a\u96c6\u5408\u4e2d\u72ec\u6709\u7684\u5143\u7d20\uff0c\u4e0d\u5305\u62ec\u4e24\u8005\u5171\u6709\u7684\u5143\u7d20\u3002<\/p>\n\n\n\nset_a = {1, 2, 3, 4}
set_b = {3, 4, 5, 6}
unique_elements = set_a ^ set_b
print(unique_elements)<\/code><\/pre>\n\n\n\n\u8f93\u51fa<\/strong>\uff1a<\/p>\n\n\n\n{1, 2, 5, 6}<\/code><\/pre>\n\n\n\n\u5e94\u7528<\/strong>\uff1a\u5728\u6570\u636e\u5bf9\u6bd4\u65f6\u975e\u5e38\u6709\u7528\uff0c\u627e\u51fa\u4e24\u8fb9\u4e0d\u540c\u7684\u6570\u636e\u3002<\/p>\n\n\n\n<\/span>\u5b9e\u6218\u6848\u4f8b\uff1a\u7528\u6237\u6743\u9650\u7ba1\u7406<\/strong><\/span><\/h2>\n\n\n\n\u573a\u666f\u63cf\u8ff0<\/strong>\uff1a\u5047\u8bbe\u4f60\u6b63\u5728\u5f00\u53d1\u4e00\u4e2a\u7cfb\u7edf\uff0c\u9700\u8981\u7ba1\u7406\u4e0d\u540c\u7528\u6237\u7684\u4e0d\u540c\u6743\u9650\u96c6\u5408\u3002\u6bcf\u4e2a\u7528\u6237\u62e5\u6709\u4e00\u4e2a\u6743\u9650\u96c6\u5408\uff0c\u9700\u8981\u68c0\u67e5\u7528\u6237\u662f\u5426\u62e5\u6709\u7279\u5b9a\u6743\u9650\uff0c\u4ee5\u53ca\u6279\u91cf\u5206\u914d\u6216\u79fb\u9664\u6743\u9650\u3002<\/p>\n\n\n\n# \u7528\u6237\u6743\u9650\u521d\u59cb\u5316<\/em>
user_permissions = {
'Alice': {'read', 'write'},
'Bob': {'read'},
'Charlie': {'read', 'write', 'execute'}
}
def check_permission(user, permission):
\"\"\"\u68c0\u67e5\u7528\u6237\u662f\u5426\u6709\u7279\u5b9a\u6743\u9650\"\"\"
return permission in user_permissions.get(user, set())
def update_permissions(user, *permissions, add=True):
\"\"\"\u6dfb\u52a0\u6216\u79fb\u9664\u6743\u9650\"\"\"
current_perms = user_permissions.get(user, set())
if add:
user_permissions[user] = current_perms.union(permissions)
else:
user_permissions[user] = current_perms.difference(permissions)
# \u68c0\u67e5\u6743\u9650<\/em>
print(check_permission('Alice', 'write')) # \u8f93\u51fa: True<\/em>
# \u66f4\u65b0\u6743\u9650<\/em>
update_permissions('Bob', 'write')
print(user_permissions['Bob']) # \u8f93\u51fa: {'read', 'write'}<\/em>
# \u79fb\u9664\u6743\u9650<\/em>
update_permissions('Bob', 'read', add=False)
print(user_permissions['Bob']) # \u8f93\u51fa: {'write'}<\/em><\/code><\/pre>\n\n\n\n\u5206\u6790<\/strong>\uff1a<\/p>\n\n\n\n\n- \u4f7f\u7528\u96c6\u5408\u5b58\u50a8\u6743\u9650\uff0c\u4fbf\u4e8e\u8fdb\u884c\u9ad8\u6548\u7684\u6dfb\u52a0\u3001\u79fb\u9664\u548c\u68c0\u67e5\u64cd\u4f5c\u3002<\/li>\n\n\n\n
check_permission<\/code>\u51fd\u6570\u5229\u7528\u96c6\u5408\u7684\u6210\u5458\u8fd0\u7b97\u7b26\u5feb\u901f\u68c0\u67e5\u6743\u9650\u3002<\/li>\n\n\n\nupdate_permissions<\/code>\u51fd\u6570\u5c55\u793a\u4e86\u96c6\u5408\u7684\u5e76\u96c6\u548c\u5dee\u96c6\u64cd\u4f5c\uff0c\u7528\u4e8e\u52a8\u6001\u7ba1\u7406\u6743\u9650\u3002<\/li>\n<\/ul>\n\n\n\n\u901a\u8fc7\u8fd9\u4e2a\u5b9e\u6218\u6848\u4f8b\uff0c\u6211\u4eec\u770b\u5230\u4e86\u96c6\u5408\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u7684\u5f3a\u5927\u80fd\u529b\uff0c\u7279\u522b\u662f\u5728\u5904\u7406\u5143\u7d20\u7684\u552f\u4e00\u6027\u548c\u96c6\u5408\u8fd0\u7b97\u65b9\u9762\u3002\u638c\u63e1\u8fd9\u4e9b\u6280\u5de7\uff0c\u5c06\u4f7f\u4f60\u5728\u5904\u7406\u6570\u636e\u548c\u903b\u8f91\u63a7\u5236\u65f6\u66f4\u52a0\u6e38\u5203\u6709\u4f59\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u96c6\u5408\uff08Set\uff09\u5728Python\u4e2d\u662f\u4e00\u4e2a\u65e0\u5e8f\u4e14\u4e0d\u91cd\u590d\u5143\u7d20\u7684\u5e8f\u5217\uff0c\u5b83\u975e\u5e38\u9002\u5408\u7528\u4e8e\u6570\u636e\u53bb\u91cd\u548c\u96c6\u5408\u8fd0\u7b97\u3002\u4eca\u5929\uff0c…