<\/span><\/h2>\n\n\n\n\u5b57\u5178\u63a8\u5bfc\u5f0f\u662f\u521b\u5efa\u5b57\u5178\u7684\u5feb\u6377\u65b9\u5f0f\u3002\u6bd4\u5982\uff0c\u5c06\u4e00\u4e2a\u5217\u8868\u7684\u5143\u7d20\u8f6c\u6362\u4e3a\u5176\u5e73\u65b9\u4f5c\u4e3a\u503c\uff1a<\/p>\n\n\n\n
squares = {num: num**2 for num in range(1, 6)}
print(squares) # \u8f93\u51fa: {1: 1, 2: 4, 3: 9, 4: 16, 5: 25}<\/em><\/code><\/pre>\n\n\n\n<\/span>2. \u5408\u5e76\u5b57\u5178\uff08Using update()<\/code>\uff09<\/strong><\/span><\/h2>\n\n\n\n\u5408\u5e76\u4e24\u4e2a\u5b57\u5178\u65f6\uff0cupdate()<\/code>\u65b9\u6cd5\u975e\u5e38\u6709\u7528\uff0c\u5b83\u4f1a\u5c06\u4e00\u4e2a\u5b57\u5178\u7684\u952e\u503c\u5bf9\u6dfb\u52a0\u5230\u53e6\u4e00\u4e2a\u5b57\u5178\u4e2d\uff0c\u5982\u679c\u6709\u91cd\u590d\u7684\u952e\uff0c\u5219\u540e\u8005\u7684\u503c\u4f1a\u8986\u76d6\u524d\u8005\u3002<\/p>\n\n\n\ndict1 = {'a': 1, 'b': 2}
dict2 = {'b': 3, 'c': 4}
dict1.update(dict2)
print(dict1) # \u8f93\u51fa: {'a': 1, 'b': 3, 'c': 4}<\/em><\/code><\/pre>\n\n\n\n<\/span>3. \u96c6\u5408\u7684\u57fa\u672c\u8fd0\u7b97<\/strong><\/span><\/h2>\n\n\n\n\u96c6\u5408\u652f\u6301\u5e76\u96c6(|<\/code>)\u3001\u4ea4\u96c6(&<\/code>)\u3001\u5dee\u96c6(-<\/code>)\u548c\u5bf9\u79f0\u5dee\u96c6(^<\/code>)\u7b49\u64cd\u4f5c\uff0c\u975e\u5e38\u9002\u5408\u7528\u4e8e\u6570\u636e\u7684\u53bb\u91cd\u548c\u6bd4\u8f83\u3002<\/p>\n\n\n\nset1 = {1, 2, 3}
set2 = {2, 3, 4}
print(set1 | set2) # \u5e76\u96c6: {1, 2, 3, 4}<\/em>
print(set1 & set2) # \u4ea4\u96c6: {2, 3}<\/em><\/code><\/pre>\n\n\n\n<\/span>4. \u5b57\u5178\u7684get()\u65b9\u6cd5<\/strong><\/span><\/h2>\n\n\n\n\u907f\u514dKeyError\u7684\u597d\u65b9\u6cd5\uff0c\u5f53\u952e\u4e0d\u5b58\u5728\u65f6\uff0c\u53ef\u4ee5\u8fd4\u56de\u9ed8\u8ba4\u503c\u3002<\/p>\n\n\n\n
my_dict = {'name': 'Alice'}
print(my_dict.get('age', 'Not Available')) # \u8f93\u51fa: Not Available<\/em><\/code><\/pre>\n\n\n\n<\/span>5. \u96c6\u5408\u63a8\u5bfc\u5f0f<\/strong><\/span><\/h2>\n\n\n\n\u7c7b\u4f3c\u4e8e\u5b57\u5178\u63a8\u5bfc\uff0c\u7528\u4e8e\u5feb\u901f\u521b\u5efa\u96c6\u5408\u3002<\/p>\n\n\n\n
even_numbers = {num for num in range(1, 11) if num % 2 == 0}
print(even_numbers) # \u8f93\u51fa: {2, 4, 6, 8, 10}<\/em><\/code><\/pre>\n\n\n\n<\/span>6. \u5b57\u5178\u7684items()\u904d\u5386<\/strong><\/span><\/h2>\n\n\n\n\u904d\u5386\u5b57\u5178\u7684\u952e\u503c\u5bf9\uff0c\u975e\u5e38\u9002\u5408\u7528\u4e8e\u540c\u65f6\u5904\u7406\u952e\u548c\u503c\u3002<\/p>\n\n\n\n
for key, value in squares.items():
print(f\"{key}: {value}\")<\/code><\/pre>\n\n\n\n<\/span>7. \u96c6\u5408\u7684\u4e92\u65a5\u6027\u68c0\u67e5\uff08isdisjoint()\uff09<\/strong><\/span><\/h2>\n\n\n\n\u5224\u65ad\u4e24\u4e2a\u96c6\u5408\u662f\u5426\u6709\u4ea4\u96c6\u3002<\/p>\n\n\n\n
set1 = {1, 2, 3}
set2 = {4, 5, 6}
print(set1.isdisjoint(set2)) # \u8f93\u51fa: True<\/em><\/code><\/pre>\n\n\n\n<\/span>8. \u5b57\u5178\u7684pop()\u65b9\u6cd5<\/strong><\/span><\/h2>\n\n\n\n\u79fb\u9664\u6307\u5b9a\u952e\u7684\u9879\uff0c\u5e76\u8fd4\u56de\u5176\u503c\uff0c\u82e5\u952e\u4e0d\u5b58\u5728\uff0c\u53ef\u8bbe\u7f6e\u9ed8\u8ba4\u8fd4\u56de\u503c\u3002<\/p>\n\n\n\n
value = my_dict.pop('name', 'Default')
print(value) # \u8f93\u51fa: Alice<\/em><\/code><\/pre>\n\n\n\n<\/span>9. \u96c6\u5408\u7684add()\u548cremove()<\/strong><\/span><\/h2>\n\n\n\n\u52a8\u6001\u5730\u6dfb\u52a0\u6216\u79fb\u9664\u5143\u7d20\u3002<\/p>\n\n\n\n
set1.add(5)
set1.remove(3)
print(set1) # \u5047\u8bbe\u521d\u59cb\u4e3a{1, 2, 3, 4}, \u8f93\u51fa\u5c06\u662f{1, 2, 4, 5}<\/em><\/code><\/pre>\n\n\n\n<\/span>10. \u5b57\u5178\u7684fromkeys()<\/strong><\/span><\/h2>\n\n\n\n\u5feb\u901f\u751f\u6210\u4e00\u4e2a\u5b57\u5178\uff0c\u6240\u6709\u952e\u90fd\u6709\u76f8\u540c\u7684\u521d\u59cb\u503c\u3002<\/p>\n\n\n\n
keys = ['a', 'b', 'c']
values = 0
my_dict = dict.fromkeys(keys, values)
print(my_dict) # \u8f93\u51fa: {'a': 0, 'b': 0, 'c': 0}<\/em><\/code><\/pre>\n\n\n\n<\/span>11. \u96c6\u5408\u7684copy()<\/strong><\/span><\/h2>\n\n\n\n\u521b\u5efa\u96c6\u5408\u7684\u6d45\u590d\u5236\uff0c\u9002\u7528\u4e8e\u4e0d\u5e0c\u671b\u539f\u96c6\u5408\u6539\u53d8\u7684\u60c5\u51b5\u3002<\/p>\n\n\n\n
original_set = {1, 2, 3}
copied_set = original_set.copy()
copied_set.add(4)
print(original_set) # \u8f93\u51fa: {1, 2, 3}<\/em><\/code><\/pre>\n\n\n\n<\/span>12. \u5b57\u5178\u7684defaultdict<\/strong><\/span><\/h2>\n\n\n\n\u907f\u514dKeyError\uff0c\u81ea\u52a8\u4e3a\u4e0d\u5b58\u5728\u7684\u952e\u5206\u914d\u9ed8\u8ba4\u503c\u7c7b\u578b\u3002<\/p>\n\n\n\n
from collections import defaultdict
d = defaultdict(int) # \u9ed8\u8ba4\u503c\u4e3a0<\/em>
print(d['new_key']) # \u8f93\u51fa: 0<\/em><\/code><\/pre>\n\n\n\n<\/span>13. \u96c6\u5408\u7684frozenset()<\/strong><\/span><\/h2>\n\n\n\n\u5982\u679c\u4f60\u9700\u8981\u4e00\u4e2a\u4e0d\u53ef\u53d8\u7684\u96c6\u5408\uff0c\u53ef\u4ee5\u4f7f\u7528frozenset<\/code>\uff0c\u8fd9\u5bf9\u4e8e\u7528\u4f5c\u5b57\u5178\u952e\u6216\u4f5c\u4e3a\u96c6\u5408\u7684\u5143\u7d20\u975e\u5e38\u6709\u7528\u3002<\/p>\n\n\n\nfrozen_set = frozenset([1, 2, 3])<\/code><\/pre>\n\n\n\n<\/span>14. \u5b57\u5178\u89c6\u56fe\u5bf9\u8c61<\/strong><\/span><\/h2>\n\n\n\nkeys()<\/code>, values()<\/code>, \u548c items()<\/code> \u8fd4\u56de\u7684\u662f\u89c6\u56fe\u5bf9\u8c61\uff0c\u8fd9\u610f\u5473\u7740\u5b83\u4eec\u53cd\u6620\u4e86\u5b57\u5178\u7684\u53d8\u5316\u3002<\/p>\n\n\n\nview = my_dict.keys()
my_dict['age'] = 25
print(view) # \u8f93\u51fa\u5c06\u5305\u542b\u65b0\u6dfb\u52a0\u7684\u952e'age'<\/em><\/code><\/pre>\n\n\n\n<\/span>15. \u4f18\u5316\u5efa\u8bae\uff1a\u5229\u7528\u5b57\u5178\u548c\u96c6\u5408\u7684\u7279\u6027<\/strong><\/span><\/h2>\n\n\n\n\n- \u5728\u9700\u8981\u5feb\u901f\u67e5\u627e\u548c\u53bb\u91cd\u7684\u573a\u666f\u4e0b\u4f18\u5148\u8003\u8651\u4f7f\u7528\u5b57\u5178\u548c\u96c6\u5408\u3002<\/li>\n\n\n\n
- \u5bf9\u4e8e\u9891\u7e41\u7684\u6210\u5458\u8d44\u683c\u6d4b\u8bd5(
in<\/code>\u64cd\u4f5c)\uff0c\u96c6\u5408\u6bd4\u5217\u8868\u5feb\u5f97\u591a\u3002<\/li>\n\n\n\n- \u5229\u7528\u5b57\u5178\u63a8\u5bfc\u548c\u96c6\u5408\u63a8\u5bfc\u51cf\u5c11\u4ee3\u7801\u91cf\uff0c\u63d0\u9ad8\u53ef\u8bfb\u6027\u3002<\/li>\n<\/ul>\n\n\n\n
\u901a\u8fc7\u638c\u63e1\u8fd9\u4e9b\u9ad8\u7ea7\u64cd\u4f5c\u548c\u4f18\u5316\u7b56\u7565\uff0c\u4f60\u7684Python\u7f16\u7a0b\u80fd\u529b\u5c06\u5f97\u5230\u663e\u8457\u63d0\u5347\u3002<\/p>\n\n\n\n
<\/span>\u5b9e\u6218\u6848\u4f8b\u5206\u6790<\/strong><\/span><\/h2>\n\n\n\n<\/span>16. \u5b57\u5178\u7684\u5408\u5e76\u4e0e\u66f4\u65b0\u6280\u5de7<\/strong><\/span><\/h2>\n\n\n\n\u6709\u65f6\u5019\uff0c\u4f60\u53ef\u80fd\u9700\u8981\u5408\u5e76\u591a\u4e2a\u5b57\u5178\uff0c\u7279\u522b\u662f\u5f53\u5904\u7406\u914d\u7f6e\u6587\u4ef6\u6216\u53c2\u6570\u4f20\u9012\u65f6\u3002Python 3.5\u53ca\u4ee5\u4e0a\u7248\u672c\u5f15\u5165\u4e86\u4e00\u4e2a\u65b0\u7279\u6027\uff0c\u4f7f\u5f97\u8fd9\u4e2a\u8fc7\u7a0b\u66f4\u52a0\u4f18\u96c5\uff1a<\/p>\n\n\n\n
dict1 = {'x': 1, 'y': 2}
dict2 = {'y': 3, 'z': 4}
merged_dict = {**dict1, **dict2} # Python 3.5+ \u7684\u5b57\u5178\u89e3\u6784<\/em>
print(merged_dict) # \u8f93\u51fa: {'x': 1, 'y': 3, 'z': 4}<\/em><\/code><\/pre>\n\n\n\n\u8fd9\u91cc\uff0c**<\/code>\u64cd\u4f5c\u7b26\u5141\u8bb8\u6211\u4eec\u201c\u5c55\u5f00\u201d\u5b57\u5178\uff0c\u4ece\u800c\u76f4\u63a5\u5408\u5e76\u5b83\u4eec\uff0c\u9047\u5230\u76f8\u540c\u952e\u65f6\uff0c\u540e\u9762\u7684\u5b57\u5178\u4e2d\u7684\u503c\u4f1a\u8986\u76d6\u524d\u9762\u7684\u3002<\/p>\n\n\n\n<\/span>17. \u96c6\u5408\u7684\u9ad8\u7ea7\u8fd0\u7b97\u5b9e\u6218<\/strong><\/span><\/h2>\n\n\n\n\u96c6\u5408\u9664\u4e86\u57fa\u672c\u8fd0\u7b97\u5916\uff0c\u8fd8\u53ef\u4ee5\u7528\u6765\u89e3\u51b3\u590d\u6742\u7684\u903b\u8f91\u95ee\u9898\uff0c\u4f8b\u5982\u627e\u51fa\u4e24\u4e2a\u5217\u8868\u7684\u552f\u4e00\u5143\u7d20\uff1a<\/p>\n\n\n\n
list1 = [1, 2, 3, 4]
list2 = [3, 4, 5, 6]
unique_elements = set(list1) ^ set(list2) # \u5bf9\u79f0\u5dee\u96c6<\/em>
print(unique_elements) # \u8f93\u51fa: {1, 2, 5, 6}<\/em><\/code><\/pre>\n\n\n\n