<\/span><\/h2>\n\n\n\n\u60f3\u8c61\u4e00\u4e0b\uff0c\u4f60\u6709\u4e00\u5806\u4eba\u7684\u540d\u5b57\uff08\u5217\u8868\uff09\uff0c\u4f60\u60f3\u628a\u5b83\u4eec\u53d8\u6210\u5927\u5199\u5f62\u5f0f\u7684\u5b57\u5178\u952e\u503c\u5bf9\u3002<\/p>\n\n\n\n
names = ['Alice', 'Bob', 'Charlie']
upper_names = {name: name.upper() for name in names}
print(upper_names)<\/code><\/pre>\n\n\n\n\u8fd9\u884c\u4ee3\u7801\u7684\u610f\u601d\u662f\uff1a\u201c\u5bf9\u4e8enames\u91cc\u7684\u6bcf\u4e2a\u540d\u5b57\uff0c\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u952e\u503c\u5bf9\uff0c\u952e\u662f\u540d\u5b57\u672c\u8eab\uff0c\u503c\u662f\u540d\u5b57\u7684\u5927\u5199\u5f62\u5f0f\u3002\u201d\u7b80\u5355\u5427\uff1f<\/p>\n\n\n\n
<\/span>\u7b2c\u4e8c\u7ad9\uff1a\u6620\u5c04\u5927\u9646<\/strong><\/span><\/h2>\n\n\n\n<\/span>\u6848\u4f8b2\uff1a\u6570\u503c\u7ffb\u500d<\/strong><\/span><\/h2>\n\n\n\n\u4f60\u5f97\u5230\u4e86\u4e00\u4e2a\u6570\u5b57\u5217\u8868\uff0c\u60f3\u5f97\u5230\u4e00\u4e2a\u65b0\u5b57\u5178\uff0c\u5176\u4e2d\u6bcf\u4e2a\u6570\u5b57\u7ffb\u500d\u3002<\/p>\n\n\n\n
numbers = [1, 2, 3]
doubled = {num: num * 2 for num in numbers}
print(doubled)<\/code><\/pre>\n\n\n\n\u201c\u6bcf\u4e00\u4e2a\u6570\u5b57\uff0c\u4e58\u4ee52\uff0c\u88c5\u8fdb\u5b57\u5178\u201d\uff0c\u641e\u5b9a\uff01<\/p>\n\n\n\n
<\/span>\u7b2c\u4e09\u7ad9\uff1a\u6761\u4ef6\u6d77\u57df<\/strong><\/span><\/h2>\n\n\n\n<\/span>\u6848\u4f8b3\uff1a\u7b5b\u9009\u5076\u6570<\/strong><\/span><\/h2>\n\n\n\n\u53ea\u4fdd\u7559\u5217\u8868\u4e2d\u5076\u6570\u7684\u952e\u503c\u5bf9\u3002<\/p>\n\n\n\n
numbers = [1, 2, 3, 4, 5]
even_only = {num: \"Even\" for num in numbers if num % 2 == 0}
print(even_only)<\/code><\/pre>\n\n\n\n\u201c\u5982\u679c\u6570\u5b57\u80fd\u88ab2\u6574\u9664\uff0c\u5c31\u8ba9\u5b83\u6210\u4e3a\u5b57\u5178\u7684\u4e00\u90e8\u5206\u3002\u201d<\/p>\n\n\n\n
<\/span>\u7b2c\u56db\u7ad9\uff1a\u590d\u5408\u952e\u503c<\/strong><\/span><\/h2>\n\n\n\n<\/span>\u6848\u4f8b4\uff1a\u59d3\u540d\u4e0e\u5e74\u9f84<\/strong><\/span><\/h2>\n\n\n\n\u7ed9\u5b9a\u4e24\u4e2a\u5217\u8868\uff0c\u521b\u5efa\u4e00\u4e2a\u5b57\u5178\uff0c\u540d\u5b57\u4f5c\u4e3a\u952e\uff0c\u5e74\u9f84\u4f5c\u4e3a\u503c\u3002<\/p>\n\n\n\n
names = ['Alice', 'Bob']
ages = [24, 30]
name_age = {name: age for name, age in zip(names, ages)}
print(name_age)<\/code><\/pre>\n\n\n\n\u201c\u624b\u62c9\u624b\uff0c\u4e00\u5bf9\u4e00\u5bf9\u8fdb\u5b57\u5178\u3002\u201d<\/p>\n\n\n\n
<\/span>\u7b2c\u4e94\u7ad9\uff1a\u5d4c\u5957\u5192\u9669<\/strong><\/span><\/h2>\n\n\n\n<\/span>\u6848\u4f8b5\uff1a\u5d4c\u5957\u5217\u8868\u8f6c\u5b57\u5178<\/strong><\/span><\/h2>\n\n\n\n\u5047\u8bbe\u4f60\u6709\u5d4c\u5957\u5217\u8868\uff0c\u60f3\u63d0\u53d6\u6bcf\u4e2a\u5b50\u5217\u8868\u7684\u7b2c\u4e00\u4e2a\u5143\u7d20\u4f5c\u4e3a\u952e\uff0c\u6574\u4e2a\u5b50\u5217\u8868\u4f5c\u4e3a\u503c\u3002<\/p>\n\n\n\n
data = [['John', 28], ['Anna', 24], ['Peter', 35]]
nested_dict = {item[0]: item for item in data}
print(nested_dict)<\/code><\/pre>\n\n\n\n\u201c\u6bcf\u4e2a\u5c0f\u961f\u7684\u7b2c\u4e00\u4e2a\u6210\u5458\u5f53\u961f\u957f\uff0c\u6574\u4e2a\u5c0f\u961f\u8ddf\u7740\u8d70\u3002\u201d<\/p>\n\n\n\n
<\/span>\u7b2c\u516d\u7ad9\uff1a\u96c6\u5408\u6311\u6218<\/strong><\/span><\/h2>\n\n\n\n<\/span>\u6848\u4f8b6\uff1a\u5217\u8868\u53bb\u91cd<\/strong><\/span><\/h2>\n\n\n\n\u5c06\u4e24\u4e2a\u5217\u8868\u7684\u4ea4\u96c6\u4f5c\u4e3a\u952e\uff0c\u5b83\u4eec\u5728\u539f\u5217\u8868\u4e2d\u7684\u7d22\u5f15\u4f5c\u4e3a\u503c\u3002<\/p>\n\n\n\n
list1 = [1, 2, 3, 4]
list2 = [2, 3, 4, 5]
indexes = {val: (i, j) for i, x in enumerate(list1) for j, y in enumerate(list2) if x == y}
print(indexes)<\/code><\/pre>\n\n\n\n\u201c\u627e\u5230\u5171\u540c\u70b9\uff0c\u8bb0\u4f4f\u4ed6\u4eec\u7684\u5bb6\u3002\u201d<\/p>\n\n\n\n
<\/span>\u7b2c\u4e03\u7ad9\uff1a\u5b57\u7b26\u4e32\u4e50\u56ed<\/strong><\/span><\/h2>\n\n\n\n<\/span>\u6848\u4f8b7\uff1a\u5b57\u7b26\u9891\u7387<\/strong><\/span><\/h2>\n\n\n\n\u7edf\u8ba1\u5b57\u7b26\u4e32\u4e2d\u6bcf\u4e2a\u5b57\u7b26\u51fa\u73b0\u7684\u6b21\u6570\u3002<\/p>\n\n\n\n
text = \"hello world\"
freq = {char: text.count(char) for char in text}
print(freq)<\/code><\/pre>\n\n\n\n\u201c\u6bcf\u4e2a\u5b57\u6bcd\uff0c\u6570\u4e00\u6570\u4f60\u7684\u670b\u53cb\u4eec\u3002\u201d<\/p>\n\n\n\n
<\/span>\u7b2c\u516b\u7ad9\uff1a\u903b\u8f91\u8ff7\u5bab<\/strong><\/span><\/h2>\n\n\n\n<\/span>\u6848\u4f8b8\uff1a\u57fa\u4e8e\u6761\u4ef6\u7684\u6620\u5c04<\/strong><\/span><\/h2>\n\n\n\n\u521b\u5efa\u4e00\u4e2a\u5b57\u5178\uff0c\u952e\u662f\u6570\u5b57\uff0c\u503c\u662f\u8be5\u6570\u5b57\u662f\u5426\u4e3a\u8d28\u6570\u7684\u5224\u65ad\u7ed3\u679c\u3002<\/p>\n\n\n\n
def is_prime(n):
return n > 1 and all(n % i for i in range(2, int(n**0.5) + 1))
numbers = list(range(1, 11))
prime_check = {num: is_prime(num) for num in numbers}
print(prime_check)<\/code><\/pre>\n\n\n\n\u201c\u5bf9\u4e8e\u6bcf\u4e2a\u6570\u5b57\uff0c\u505a\u4e2a\u8d28\u6570\u6d4b\u8bd5\u3002\u201d<\/p>\n\n\n\n
<\/span>\u7b2c\u4e5d\u7ad9\uff1a\u5b57\u5178\u5408\u5e76<\/strong><\/span><\/h2>\n\n\n\n<\/span>\u6848\u4f8b9\uff1a\u5408\u5e76\u5b57\u5178<\/strong><\/span><\/h2>\n\n\n\n\u5408\u5e76\u4e24\u4e2a\u5b57\u5178\uff0c\u76f8\u540c\u952e\u7684\u503c\u76f8\u52a0\u3002<\/p>\n\n\n\n
dict1 = {\"a\": 1, \"b\": 2}
dict2 = {\"b\": 3, \"c\": 4}
merged = {k: dict1.get(k, 0) + dict2.get(k, 0) for k in set(dict1) | set(dict2)}
print(merged)<\/code><\/pre>\n\n\n\n\u201c\u4f60\u4e00\u534a\uff0c\u6211\u4e00\u534a\uff0c\u5408\u5e76\u8d77\u6765\u4e0d\u91cd\u53e0\u3002\u201d<\/p>\n\n\n\n
<\/span>\u7b2c\u5341\u7ad9\uff1a\u8f6c\u6362\u5de5\u5382<\/strong><\/span><\/h2>\n\n\n\n<\/span>\u6848\u4f8b10\uff1aJSON\u5230\u5b57\u5178<\/strong><\/span><\/h2>\n\n\n\n\u89e3\u6790\u7b80\u5355\u7684JSON\u5b57\u7b26\u4e32\u5230\u5b57\u5178\u3002<\/p>\n\n\n\n
import json
json_str = '{\"name\": \"Alice\", \"age\": 30}'
parsed_json = json.loads(json_str)
print(parsed_json)<\/code><\/pre>\n\n\n\n\u201c\u4ece\u5b57\u7b26\u4e32\u7684\u9b54\u6cd5\u4e2d\u89e3\u653e\u6570\u636e\u3002\u201d<\/p>\n\n\n\n
<\/span>\u7b2c\u5341\u4e00\u7ad9\uff1a\u9ad8\u7ea7\u7b5b\u9009<\/strong><\/span><\/h2>\n\n\n\n<\/span>\u6848\u4f8b11\uff1a\u57fa\u4e8e\u591a\u4e2a\u6761\u4ef6\u7684\u5b57\u5178\u751f\u6210<\/strong><\/span><\/h2>\n\n\n\n\u4ece\u4e00\u4e2a\u5927\u5b57\u5178\u4e2d\u6839\u636e\u591a\u4e2a\u6761\u4ef6\u7b5b\u9009\u51fa\u5b50\u5b57\u5178\u3002<\/p>\n\n\n\n
big_dict = {'a': 1, 'b': 2, 'c': 3, 'd': 4, 'e': 5}
filtered = {k: v for k, v in big_dict.items() if v > 2 and v < 5}
print(filtered)<\/code><\/pre>\n\n\n\n\u201c\u4e25\u683c\u7b5b\u9009\uff0c\u53ea\u7559\u4e0b\u7b26\u5408\u6761\u4ef6\u7684\u3002\u201d<\/p>\n\n\n\n
<\/span>\u7b2c\u5341\u4e8c\u7ad9\uff1a\u7ec8\u6781\u6311\u6218<\/strong><\/span><\/h2>\n\n\n\n<\/span>\u6848\u4f8b12\uff1a\u5b57\u5178\u4e2d\u5b57\u5178\u7684\u521b\u9020<\/strong><\/span><\/h2>\n\n\n\n\u521b\u5efa\u4e00\u4e2a\u5b57\u5178\uff0c\u6bcf\u4e2a\u952e\u5bf9\u5e94\u53e6\u4e00\u4e2a\u5b57\u5178\uff0c\u6839\u636e\u4e00\u4e9b\u590d\u6742\u7684\u89c4\u5219\u3002<\/p>\n\n\n\n
keys = ['A', 'B', 'C']
values = [{'x': 1, 'y': 2}, {'x': 3, 'y': 4}, {'x': 5, 'y': 6}]
compound_dict = {k: {f'val_{i}': v[i] for i in v} for k, v in zip(keys, values)}
print(compound_dict)<\/code><\/pre>\n\n\n\n\u201c\u5b57\u5178\u91cc\u8fd8\u6709\u5b57\u5178\uff0c\u5c42\u5c42\u5d4c\u5957\u7684\u79d8\u5bc6\u3002\u201d<\/p>\n\n\n\n
\n\n\n\n<\/span>\u9ad8\u7ea7\u7bc7\uff1a\u8fdb\u9636\u6280\u5de7\u4e0e\u5e94\u7528<\/strong><\/span><\/h2>\n\n\n\n<\/span>\u7b2c\u5341\u4e09\u7ad9\uff1a\u5217\u8868\u5185\u5b57\u5178\u7684\u5904\u7406<\/strong><\/span><\/h2>\n\n\n\n<\/span>\u6848\u4f8b13\uff1a\u8f6c\u6362\u5217\u8868\u4e3a\u5b57\u5178\u5217\u8868<\/strong><\/span><\/h3>\n\n\n\n\u60f3\u8c61\u4f60\u6709\u4e00\u4e2a\u5217\u8868\uff0c\u6bcf\u4e2a\u5143\u7d20\u90fd\u662f\u5305\u542b\u540d\u5b57\u548c\u5e74\u9f84\u7684\u5217\u8868\uff0c\u4f60\u60f3\u8f6c\u6362\u6210\u5b57\u5178\u5217\u8868\u3002<\/p>\n\n\n\n
people_info = [[\"Alice\", 28], [\"Bob\", 30]]
people_dicts = [{name: age} for name, age in people_info]
print(people_dicts)<\/code><\/pre>\n\n\n\n\u8fd9\u91cc\uff0c\u6211\u4eec\u5faa\u73af\u904d\u5386\u5217\u8868\uff0c\u5c06\u6bcf\u4e2a\u5b50\u5217\u8868\u8f6c\u6362\u6210\u4e00\u4e2a\u5b57\u5178\uff0c\u5e76\u6dfb\u52a0\u5230\u65b0\u7684\u5217\u8868\u4e2d\u3002<\/p>\n\n\n\n
<\/span>\u7b2c\u5341\u56db\u7ad9\uff1a\u5b57\u5178\u7684\u6df1\u5ea6\u64cd\u4f5c<\/strong><\/span><\/h2>\n\n\n\n<\/span>\u6848\u4f8b14\uff1a\u6241\u5e73\u5316\u5d4c\u5957\u5b57\u5178<\/strong><\/span><\/h3>\n\n\n\n\u6709\u65f6\u4f60\u9700\u8981\u5904\u7406\u5d4c\u5957\u5b57\u5178\uff0c\u6bd4\u5982\u5c06\u6240\u6709\u9876\u5c42\u952e\u503c\u5bf9\u63d0\u53d6\u51fa\u6765\u3002<\/p>\n\n\n\n
nested_dict = {'a': {'x': 1}, 'b': {'y': 2, 'z': 3}}
flat_dict = {k: v for nested_key in nested_dict for k, v in nested_dict[nested_key].items()}
print(flat_dict)<\/code><\/pre>\n\n\n\n\u8fd9\u6bb5\u4ee3\u7801\u901a\u8fc7\u4e24\u5c42\u5faa\u73af\uff0c\u904d\u5386\u4e86\u5d4c\u5957\u5b57\u5178\u7684\u6240\u6709\u7b2c\u4e00\u5c42\u952e\u503c\u5bf9\u3002<\/p>\n\n\n\n
<\/span>\u7b2c\u5341\u4e94\u7ad9\uff1a\u7ed3\u5408\u51fd\u6570\u4e0e\u63a8\u5bfc\u5f0f<\/strong><\/span><\/h2>\n\n\n\n<\/span>\u6848\u4f8b15\uff1a\u4f7f\u7528\u51fd\u6570\u589e\u5f3a\u8868\u8fbe<\/strong><\/span><\/h3>\n\n\n\n\u5229\u7528\u51fd\u6570\u6765\u589e\u5f3a\u5b57\u5178\u63a8\u5bfc\u5f0f\u7684\u529f\u80fd\uff0c\u6bd4\u5982\u8ba1\u7b97\u5e73\u65b9\u3002<\/p>\n\n\n\n
nums = [1, 2, 3, 4]
square_dict = {num: (lambda x: x*x)(num) for num in nums}
# \u6216\u66f4\u7b80\u6d01\u5730\u4f7f\u7528 pow \u51fd\u6570<\/em>
square_dict = {num: pow(num, 2) for num in nums}
print(square_dict)<\/code><\/pre>\n\n\n\n\u8fd9\u91cc\u5c55\u793a\u4e86\u5982\u4f55\u5728\u5b57\u5178\u63a8\u5bfc\u5f0f\u4e2d\u76f4\u63a5\u8c03\u7528\u51fd\u6570\uff0c\u589e\u52a0\u8868\u8fbe\u7684\u7075\u6d3b\u6027\u3002<\/p>\n\n\n\n
<\/span>\u7b2c\u5341\u516d\u7ad9\uff1a\u5143\u7ec4\u4e0e\u5b57\u5178\u63a8\u5bfc\u7684\u7ed3\u5408<\/strong><\/span><\/h2>\n\n\n\n<\/span>\u6848\u4f8b16\uff1a\u57fa\u4e8e\u5143\u7ec4\u7684\u6620\u5c04<\/strong><\/span><\/h3>\n\n\n\n\u5982\u679c\u4f60\u6709\u4e00\u4e2a\u5143\u7ec4\u5217\u8868\uff0c\u6bcf\u4e2a\u5143\u7ec4\u4ee3\u8868\u952e\u503c\u5bf9\uff0c\u53ef\u4ee5\u7528\u63a8\u5bfc\u5f0f\u5feb\u901f\u8f6c\u6362\u3002<\/p>\n\n\n\n
pairs = [('name', 'Alice'), ('age', 28)]