<\/span><\/h2>\n\n\n\nnumbers = [1, 2, 3, 4, 5]
average = sum(numbers) \/ len(numbers)<\/code><\/pre>\n\n\n\n\n- \u89e3\u91ca<\/strong>\uff1a\u4f7f\u7528
sum()<\/code>\u8ba1\u7b97\u5217\u8868\u603b\u548c\uff0clen()<\/code>\u83b7\u53d6\u957f\u5ea6\uff0c\u7136\u540e\u76f8\u9664\u5f97\u5230\u5e73\u5747\u503c\u3002<\/li>\n<\/ul>\n\n\n\n<\/span>2. \u5217\u8868\u8f6c\u5b57\u7b26\u4e32<\/strong><\/span><\/h2>\n\n\n\nmy_list = ['Hello', 'world']
stringified = ' '.join(my_list)<\/code><\/pre>\n\n\n\n\n- \u89e3\u91ca<\/strong>\uff1a
join()<\/code>\u65b9\u6cd5\u7528\u4e8e\u5c06\u5217\u8868\u4e2d\u7684\u5143\u7d20\u8fde\u63a5\u6210\u5b57\u7b26\u4e32\uff0c\u4e2d\u95f4\u7528\u6307\u5b9a\u5b57\u7b26\uff08\u8fd9\u91cc\u662f\u7a7a\u683c\uff09\u5206\u9694\u3002<\/li>\n<\/ul>\n\n\n\n<\/span>3. \u67e5\u627e\u6700\u5927\u503c<\/strong><\/span><\/h2>\n\n\n\nnumbers = [3, 1, 4, 1, 5, 9, 2, 6]
max_value = max(numbers)<\/code><\/pre>\n\n\n\n\n- \u89e3\u91ca<\/strong>\uff1a\u76f4\u63a5\u4f7f\u7528
max()<\/code>\u51fd\u6570\u627e\u5230\u5217\u8868\u4e2d\u7684\u6700\u5927\u503c\u3002<\/li>\n<\/ul>\n\n\n\n<\/span>4. \u68c0\u67e5\u662f\u5426\u5168\u662f\u6570\u5b57<\/strong><\/span><\/h2>\n\n\n\ns = \"12345\"
is_all_digits = all(c.isdigit() for c in s)<\/code><\/pre>\n\n\n\n\n- \u89e3\u91ca<\/strong>\uff1a
all()<\/code>\u7ed3\u5408\u751f\u6210\u5668\u8868\u8fbe\u5f0f\uff0c\u68c0\u67e5\u5e8f\u5217\u4e2d\u6240\u6709\u5143\u7d20\u662f\u5426\u6ee1\u8db3\u6761\u4ef6\uff0c\u8fd9\u91cc\u68c0\u67e5\u6bcf\u4e2a\u5b57\u7b26\u662f\u5426\u4e3a\u6570\u5b57\u3002<\/li>\n<\/ul>\n\n\n\n<\/span>5. \u53cd\u8f6c\u5b57\u7b26\u4e32<\/strong><\/span><\/h2>\n\n\n\nmy_string = \"hello\"
reversed_string = my_string[::-1]<\/code><\/pre>\n\n\n\n\n- \u89e3\u91ca<\/strong>\uff1a\u5207\u7247\u64cd\u4f5c
[::-1]<\/code>\u7528\u4e8e\u53cd\u8f6c\u5b57\u7b26\u4e32\u3002<\/li>\n<\/ul>\n\n\n\n<\/span>6. \u5e73\u65b9\u4e00\u4e2a\u5217\u8868\u7684\u5143\u7d20<\/strong><\/span><\/h2>\n\n\n\nnumbers = [1, 2, 3]
squared = [n**2 for n in numbers]<\/code><\/pre>\n\n\n\n\n- \u89e3\u91ca<\/strong>\uff1a\u5217\u8868\u63a8\u5bfc\u5f0f\uff0c\u5bf9\u5217\u8868\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u8fdb\u884c\u5e73\u65b9\u8fd0\u7b97\u3002<\/li>\n<\/ul>\n\n\n\n
<\/span>7. \u5224\u65ad\u662f\u5426\u4e3a\u7d20\u6570<\/strong><\/span><\/h2>\n\n\n\ndef is_prime(n):
return all(n % i for i in range(2, int(n**0.5) + 1)) and n > 1<\/code><\/pre>\n\n\n\n\n- \u89e3\u91ca<\/strong>\uff1a\u4f7f\u7528
all()<\/code>\u548c\u751f\u6210\u5668\u8868\u8fbe\u5f0f\u5224\u65ad2\u5230\u6839\u53f7n\u4e4b\u95f4\u662f\u5426\u6709\u56e0\u5b50\u3002<\/li>\n<\/ul>\n\n\n\n<\/span>8. \u5b57\u7b26\u4e32\u53bb\u91cd<\/strong><\/span><\/h2>\n\n\n\nmy_string = \"hello\"
unique_chars = ''.join(sorted(set(my_string)))<\/code><\/pre>\n\n\n\n\n- \u89e3\u91ca<\/strong>\uff1a\u5148\u7528
set()<\/code>\u53bb\u91cd\uff0c\u518d\u6392\u5e8f\uff0c\u6700\u540e\u7528join()<\/code>\u5408\u5e76\u6210\u5b57\u7b26\u4e32\u3002<\/li>\n<\/ul>\n\n\n\n<\/span>9. \u8ba1\u7b97\u5b57\u7b26\u4e32\u51fa\u73b0\u6b21\u6570<\/strong><\/span><\/h2>\n\n\n\ntext = \"hello world\"
count = text.count('o')<\/code><\/pre>\n\n\n\n\n- \u89e3\u91ca<\/strong>\uff1a
count()<\/code>\u65b9\u6cd5\u7edf\u8ba1\u5b50\u5b57\u7b26\u4e32\u5728\u539f\u5b57\u7b26\u4e32\u4e2d\u51fa\u73b0\u7684\u6b21\u6570\u3002<\/li>\n<\/ul>\n\n\n\n<\/span>10. \u6587\u4ef6\u8bfb\u53d6\u6240\u6709\u884c<\/strong><\/span><\/h2>\n\n\n\nwith open('example.txt', 'r') as file:
lines = file.readlines()<\/code><\/pre>\n\n\n\n\n- \u89e3\u91ca<\/strong>\uff1a\u4f7f\u7528\u4e0a\u4e0b\u6587\u7ba1\u7406\u5668\u5b89\u5168\u8bfb\u53d6\u6587\u4ef6\uff0c
readlines()<\/code>\u8bfb\u53d6\u6240\u6709\u884c\u5230\u5217\u8868\u4e2d\u3002<\/li>\n<\/ul>\n\n\n\n<\/span>11. \u5feb\u901f\u6392\u5e8f<\/strong><\/span><\/h2>\n\n\n\ndef quick_sort(lst):
return sorted(lst)<\/code><\/pre>\n\n\n\n\n- \u89e3\u91ca<\/strong>\uff1a\u867d\u7136\u4e0d\u662f\u201c\u4e00\u884c\u5185\u201d\u5b8c\u6210\uff0c\u4f46\u4f7f\u7528\u5185\u7f6e\u7684
sorted()<\/code>\u51fd\u6570\u5feb\u901f\u6392\u5e8f\uff0c\u7b80\u6d01\u6709\u6548\u3002<\/li>\n<\/ul>\n\n\n\n<\/span>12. \u751f\u6210\u6590\u6ce2\u90a3\u5951\u6570\u5217<\/strong><\/span><\/h2>\n\n\n\nfibonacci = lambda n: [0, 1] + [fibonacci(i - 1)[-1] + fibonacci(i - 2)[-1] for i in range(2, n)]<\/code><\/pre>\n\n\n\n\n- \u89e3\u91ca<\/strong>\uff1a\u9012\u5f52\u5b9a\u4e49\u6590\u6ce2\u90a3\u5951\u6570\u5217\uff0c\u6ce8\u610f\u6548\u7387\u8f83\u4f4e\uff0c\u9002\u7528\u4e8e\u6559\u5b66\u76ee\u7684\u3002<\/li>\n<\/ul>\n\n\n\n
<\/span>13. \u5b57\u5178\u952e\u503c\u5bf9\u4ea4\u6362<\/strong><\/span><\/h2>\n\n\n\nmy_dict = {'a': 1, 'b': 2}
swapped = {v: k for k, v in my_dict.items()}<\/code><\/pre>\n\n\n\n\n- \u89e3\u91ca<\/strong>\uff1a\u5b57\u5178\u63a8\u5bfc\u5f0f\uff0c\u4ea4\u6362\u952e\u503c\u5bf9\u3002<\/li>\n<\/ul>\n\n\n\n
<\/span>14. \u6c42\u4e24\u4e2a\u96c6\u5408\u7684\u4ea4\u96c6<\/strong><\/span><\/h2>\n\n\n\nset1 = {1, 2, 3}
set2 = {2, 3, 4}
intersection = set1 & set2<\/code><\/pre>\n\n\n\n\n- \u89e3\u91ca<\/strong>\uff1a\u4f7f\u7528\u96c6\u5408\u7684\u4ea4\u96c6\u8fd0\u7b97\u7b26
&<\/code>\u3002<\/li>\n<\/ul>\n\n\n\n<\/span>15. \u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u6574\u578b\u5217\u8868<\/strong><\/span><\/h2>\n\n\n\ns = \"12345\"
int_list = list(map(int, s))<\/code><\/pre>\n\n\n\n\n- \u89e3\u91ca<\/strong>\uff1a\u7ed3\u5408
map()<\/code>\u548clist()<\/code>\uff0c\u5c06\u5b57\u7b26\u4e32\u6bcf\u4e2a\u5b57\u7b26\u8f6c\u6362\u4e3a\u6574\u6570\u5e76\u5217\u8868\u5316\u3002<\/li>\n<\/ul>\n\n\n\n<\/span>16. \u751f\u6210\u968f\u673a\u6570<\/strong><\/span><\/h2>\n\n\n\nimport random
random_number = random.randint(1, 100)<\/code><\/pre>\n\n\n\n\n- \u89e3\u91ca<\/strong>\uff1a\u5bfc\u5165
random<\/code>\u6a21\u5757\uff0c\u751f\u6210\u6307\u5b9a\u8303\u56f4\u5185\u7684\u968f\u673a\u6574\u6570\u3002<\/li>\n<\/ul>\n\n\n\n<\/span>17. \u6df7\u6dc6\u5b57\u7b26\u4e32\u7684\u5b57\u6bcd\u987a\u5e8f<\/strong><\/span><\/h2>\n\n\n\nfrom random import shuffle
s = \"hello\"
shuffled = ''.join(shuffle(list(s), random.random))<\/code><\/pre>\n\n\n\n\n- \u89e3\u91ca<\/strong>\uff1a\u5c06\u5b57\u7b26\u4e32\u8f6c\u4e3a\u5217\u8868\uff0c\u6253\u4e71\u987a\u5e8f\uff0c\u518d\u5408\u5e76\u56de\u5b57\u7b26\u4e32\u3002<\/li>\n<\/ul>\n\n\n\n
<\/span>18. \u5c06\u79d2\u8f6c\u6362\u4e3a\u65f6\u5206\u79d2<\/strong><\/span><\/h2>\n\n\n\nseconds = 3661
hours, remainder = divmod(seconds, 3600)
minutes, seconds = divmod(remainder, 60)
time_format = f\"{hours}:{minutes}:{seconds}\"<\/code><\/pre>\n\n\n\n\n- \u89e3\u91ca<\/strong>\uff1a\u4f7f\u7528
divmod()<\/code>\u51fd\u6570\u8fdb\u884c\u591a\u6b21\u9664\u6cd5\u548c\u53d6\u4f59\u64cd\u4f5c\uff0c\u683c\u5f0f\u5316\u8f93\u51fa\u65f6\u95f4\u3002<\/li>\n<\/ul>\n\n\n\n<\/span>19. \u5224\u65ad\u95f0\u5e74<\/strong><\/span><\/h2>\n\n\n\n