{"id":1023440,"date":"2024-12-30T14:05:12","date_gmt":"2024-12-30T06:05:12","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1023440.html"},"modified":"2024-12-30T14:05:14","modified_gmt":"2024-12-30T06:05:14","slug":"python%e5%a6%82%e4%bd%95%e5%9c%a8%e5%88%97%e8%a1%a8%e5%88%87%e7%89%87-2","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1023440.html","title":{"rendered":"python\u5982\u4f55\u5728\u5217\u8868\u5207\u7247"},"content":{"rendered":"

\"python\u5982\u4f55\u5728\u5217\u8868\u5207\u7247\"<\/p>\n

Python\u4e2d\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u5207\u7247\u64cd\u4f5c\u7b26\u201c\uff1a\u201d\u5728\u5217\u8868\u4e2d\u8fdb\u884c\u5207\u7247\uff0c\u8bbf\u95ee\u6307\u5b9a\u8303\u56f4\u5185\u7684\u5143\u7d20\u3001\u8fdb\u884c\u590d\u6742\u7684\u5207\u7247\u64cd\u4f5c\u3001\u5728\u539f\u5217\u8868\u4e2d\u521b\u5efa\u5b50\u5217\u8868\u3002<\/strong><\/p>\n<\/p>\n

\u4f8b\u5982\uff1a<\/strong><\/p>\n<\/p>\n

# \u521b\u5efa\u4e00\u4e2a\u5217\u8868<\/p>\n
my_list = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]<\/p>\n
\u8bbf\u95ee\u4ece\u7d22\u5f151\u5230\u7d22\u5f154\u7684\u5143\u7d20\uff08\u4e0d\u5305\u542b\u7d22\u5f154\u7684\u5143\u7d20\uff09<\/strong><\/h2>\n
sub_list = my_list[1:4]<\/p>\n
print(sub_list)  # \u8f93\u51fa: [2, 3, 4]<\/p>\n
\u8bbf\u95ee\u4ece\u5217\u8868\u5f00\u59cb\u5230\u7d22\u5f155\u7684\u5143\u7d20\uff08\u4e0d\u5305\u542b\u7d22\u5f155\u7684\u5143\u7d20\uff09<\/strong><\/h2>\n
sub_list = my_list[:5]<\/p>\n
print(sub_list)  # \u8f93\u51fa: [1, 2, 3, 4, 5]<\/p>\n
\u8bbf\u95ee\u4ece\u7d22\u5f155\u5230\u5217\u8868\u672b\u5c3e\u7684\u5143\u7d20<\/strong><\/h2>\n
sub_list = my_list[5:]<\/p>\n
print(sub_list)  # \u8f93\u51fa: [6, 7, 8, 9, 10]<\/p>\n
\u8bbf\u95ee\u6574\u4e2a\u5217\u8868<\/strong><\/h2>\n
sub_list = my_list[:]<\/p>\n
print(sub_list)  # \u8f93\u51fa: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]<\/p>\n
\u8bbf\u95ee\u4ece\u7d22\u5f151\u5230\u7d22\u5f158\u4e4b\u95f4\u7684\u6bcf\u9694\u4e24\u4e2a\u5143\u7d20<\/strong><\/h2>\n
sub_list = my_list[1:8:2]<\/p>\n
print(sub_list)  # \u8f93\u51fa: [2, 4, 6, 8]<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u8be6\u7ec6\u8ba8\u8bbaPython\u4e2d\u5217\u8868\u5207\u7247\u7684\u5177\u4f53\u5e94\u7528\u548c\u6280\u5de7\uff0c\u5305\u62ec\u57fa\u672c\u5207\u7247\u64cd\u4f5c\u3001\u6b65\u957f\u53c2\u6570\u3001\u8d1f\u7d22\u5f15\u5207\u7247\u7b49\u5185\u5bb9\u3002<\/p>\n<\/p>\n
\u4e00\u3001\u57fa\u672c\u5207\u7247\u64cd\u4f5c<\/p>\n<\/p>\n
\u5207\u7247\u64cd\u4f5c\u7684\u57fa\u7840\u662f\u901a\u8fc7\u4f7f\u7528\u5192\u53f7\uff08:\uff09\u6765\u5206\u9694\u5f00\u59cb\u7d22\u5f15\u548c\u7ed3\u675f\u7d22\u5f15\u3002\u5207\u7247\u64cd\u4f5c\u8fd4\u56de\u4e00\u4e2a\u65b0\u7684\u5217\u8868\uff0c\u5305\u542b\u4ece\u5f00\u59cb\u7d22\u5f15\u5230\u7ed3\u675f\u7d22\u5f15\uff08\u4e0d\u5305\u62ec\u7ed3\u675f\u7d22\u5f15\uff09\u7684\u6240\u6709\u5143\u7d20\u3002<\/p>\n<\/p>\n
\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
my_list = [10, 20, 30, 40, 50, 60, 70, 80, 90, 100]<\/p>\n
sub_list = my_list[2:6]<\/p>\n
print(sub_list)  # \u8f93\u51fa: [30, 40, 50, 60]<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u4ece\u539f\u5217\u8868\u4e2d\u63d0\u53d6\u4e86\u7d22\u5f152\u5230\u7d22\u5f156\u4e4b\u95f4\u7684\u5143\u7d20\uff08\u4e0d\u5305\u62ec\u7d22\u5f156\u7684\u5143\u7d20\uff09\uff0c\u5e76\u5c06\u5176\u5b58\u50a8\u5728\u4e00\u4e2a\u65b0\u7684\u5b50\u5217\u8868\u4e2d\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u5f00\u59cb\u548c\u7ed3\u675f\u7d22\u5f15\u7684\u7701\u7565<\/p>\n<\/p>\n
\u5728\u5207\u7247\u64cd\u4f5c\u4e2d\uff0c\u53ef\u4ee5\u7701\u7565\u5f00\u59cb\u7d22\u5f15\u6216\u7ed3\u675f\u7d22\u5f15\uff0c\u8868\u793a\u4ece\u5217\u8868\u7684\u5f00\u5934\u6216\u7ed3\u5c3e\u8fdb\u884c\u5207\u7247\u3002\u7701\u7565\u5f00\u59cb\u7d22\u5f15\u65f6\uff0c\u9ed8\u8ba4\u4ece\u5217\u8868\u7684\u7b2c\u4e00\u4e2a\u5143\u7d20\u5f00\u59cb\uff1b\u7701\u7565\u7ed3\u675f\u7d22\u5f15\u65f6\uff0c\u9ed8\u8ba4\u76f4\u5230\u5217\u8868\u7684\u6700\u540e\u4e00\u4e2a\u5143\u7d20\u3002<\/p>\n<\/p>\n
\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
my_list = [10, 20, 30, 40, 50, 60, 70, 80, 90, 100]<\/p>\n
\u4ece\u5217\u8868\u5f00\u5934\u5230\u7d22\u5f155\uff08\u4e0d\u5305\u62ec\u7d22\u5f155\uff09\u7684\u5143\u7d20<\/strong><\/h2>\n
sub_list = my_list[:5]<\/p>\n
print(sub_list)  # \u8f93\u51fa: [10, 20, 30, 40, 50]<\/p>\n
\u4ece\u7d22\u5f155\u5230\u5217\u8868\u672b\u5c3e\u7684\u5143\u7d20<\/strong><\/h2>\n
sub_list = my_list[5:]<\/p>\n
print(sub_list)  # \u8f93\u51fa: [60, 70, 80, 90, 100]<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e09\u3001\u6b65\u957f\u53c2\u6570<\/p>\n<\/p>\n
\u9664\u4e86\u5f00\u59cb\u548c\u7ed3\u675f\u7d22\u5f15\uff0c\u5207\u7247\u64cd\u4f5c\u8fd8\u53ef\u4ee5\u5305\u542b\u4e00\u4e2a\u6b65\u957f\u53c2\u6570\uff0c\u6307\u5b9a\u5143\u7d20\u7684\u95f4\u9694\u3002\u6b65\u957f\u53c2\u6570\u9ed8\u8ba4\u4e3a1\uff0c\u4f46\u53ef\u4ee5\u8bbe\u7f6e\u5176\u4ed6\u503c\u4ee5\u5b9e\u73b0\u66f4\u590d\u6742\u7684\u5207\u7247\u64cd\u4f5c\u3002<\/p>\n<\/p>\n
\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
my_list = [10, 20, 30, 40, 50, 60, 70, 80, 90, 100]<\/p>\n
\u4ece\u7d22\u5f151\u5230\u7d22\u5f158\u4e4b\u95f4\u7684\u6bcf\u9694\u4e24\u4e2a\u5143\u7d20<\/strong><\/h2>\n
sub_list = my_list[1:8:2]<\/p>\n
print(sub_list)  # \u8f93\u51fa: [20, 40, 60, 80]<\/p>\n
\u8bbf\u95ee\u6574\u4e2a\u5217\u8868\u4e2d\u7684\u6bcf\u9694\u4e09\u4e2a\u5143\u7d20<\/strong><\/h2>\n
sub_list = my_list[::3]<\/p>\n
print(sub_list)  # \u8f93\u51fa: [10, 40, 70, 100]<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u56db\u3001\u8d1f\u7d22\u5f15\u5207\u7247<\/p>\n<\/p>\n
Python\u4e2d\u7684\u5217\u8868\u652f\u6301\u8d1f\u7d22\u5f15\uff0c\u5141\u8bb8\u4ece\u5217\u8868\u672b\u5c3e\u5f00\u59cb\u8fdb\u884c\u7d22\u5f15\u3002\u8d1f\u7d22\u5f15\u5207\u7247\u7684\u5de5\u4f5c\u65b9\u5f0f\u4e0e\u6b63\u7d22\u5f15\u5207\u7247\u76f8\u540c\uff0c\u53ea\u4e0d\u8fc7\u4ece\u5217\u8868\u7684\u672b\u5c3e\u5f00\u59cb\u8ba1\u6570\u3002<\/p>\n<\/p>\n
\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
my_list = [10, 20, 30, 40, 50, 60, 70, 80, 90, 100]<\/p>\n
\u4f7f\u7528\u8d1f\u7d22\u5f15\u8bbf\u95ee\u4ece\u5012\u6570\u7b2c\u4e94\u4e2a\u5143\u7d20\u5230\u5012\u6570\u7b2c\u4e8c\u4e2a\u5143\u7d20\uff08\u4e0d\u5305\u62ec\u5012\u6570\u7b2c\u4e8c\u4e2a\u5143\u7d20\uff09<\/strong><\/h2>\n
sub_list = my_list[-5:-2]<\/p>\n
print(sub_list)  # \u8f93\u51fa: [60, 70, 80]<\/p>\n
\u4f7f\u7528\u8d1f\u7d22\u5f15\u548c\u6b65\u957f\u53c2\u6570\u8bbf\u95ee\u4ece\u5217\u8868\u672b\u5c3e\u5230\u5f00\u5934\u7684\u6bcf\u9694\u4e24\u4e2a\u5143\u7d20<\/strong><\/h2>\n
sub_list = my_list[::-2]<\/p>\n
print(sub_list)  # \u8f93\u51fa: [100, 80, 60, 40, 20]<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e94\u3001\u5207\u7247\u64cd\u4f5c\u7684\u5e94\u7528\u573a\u666f<\/p>\n<\/p>\n
1\u3001\u63d0\u53d6\u5b50\u5217\u8868<\/p>\n<\/p>\n
\u5207\u7247\u64cd\u4f5c\u53ef\u4ee5\u65b9\u4fbf\u5730\u63d0\u53d6\u5217\u8868\u4e2d\u7684\u5b50\u5217\u8868\uff0c\u8fdb\u884c\u6570\u636e\u9884\u5904\u7406\u548c\u5206\u6790\u3002\u4f8b\u5982\uff0c\u4ece\u4e00\u4e2a\u5305\u542b\u591a\u4e2a\u6570\u636e\u96c6\u7684\u5217\u8868\u4e2d\u63d0\u53d6\u7279\u5b9a\u8303\u56f4\u7684\u6570\u636e\u3002<\/p>\n<\/p>\n
2\u3001\u5217\u8868\u53cd\u8f6c<\/p>\n<\/p>\n
\u4f7f\u7528\u5207\u7247\u64cd\u4f5c\u7684\u6b65\u957f\u53c2\u6570\uff0c\u53ef\u4ee5\u8f7b\u677e\u5b9e\u73b0\u5217\u8868\u53cd\u8f6c\u3002\u5c06\u6b65\u957f\u8bbe\u7f6e\u4e3a-1\uff0c\u5373\u53ef\u4ece\u5217\u8868\u672b\u5c3e\u5f00\u59cb\u8bbf\u95ee\u6bcf\u4e2a\u5143\u7d20\uff0c\u6700\u7ec8\u5f97\u5230\u53cd\u8f6c\u540e\u7684\u5217\u8868\u3002<\/p>\n<\/p>\n
\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
my_list = [10, 20, 30, 40, 50]<\/p>\n
reversed_list = my_list[::-1]<\/p>\n
print(reversed_list)  # \u8f93\u51fa: [50, 40, 30, 20, 10]<\/p>\n
<\/code><\/pre>\n<\/p>\n
3\u3001\u95f4\u9694\u91c7\u6837<\/p>\n<\/p>\n
\u5728\u6570\u636e\u5904\u7406\u4e2d\uff0c\u6709\u65f6\u9700\u8981\u5bf9\u6570\u636e\u8fdb\u884c\u95f4\u9694\u91c7\u6837\u3002\u4f8b\u5982\uff0c\u4ece\u4e00\u4e2a\u65f6\u95f4\u5e8f\u5217\u6570\u636e\u4e2d\u6bcf\u9694\u4e00\u6bb5\u65f6\u95f4\u63d0\u53d6\u4e00\u6b21\u6570\u636e\u70b9\u3002\u4f7f\u7528\u5207\u7247\u64cd\u4f5c\u7684\u6b65\u957f\u53c2\u6570\uff0c\u53ef\u4ee5\u8f7b\u677e\u5b9e\u73b0\u95f4\u9694\u91c7\u6837\u3002<\/p>\n<\/p>\n
\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
time_series_data = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]<\/p>\n
sampled_data = time_series_data[::2]<\/p>\n
print(sampled_data)  # \u8f93\u51fa: [1, 3, 5, 7, 9]<\/p>\n
<\/code><\/pre>\n<\/p>\n
4\u3001\u5220\u9664\u5217\u8868\u4e2d\u7684\u5143\u7d20<\/p>\n<\/p>\n
\u901a\u8fc7\u5207\u7247\u64cd\u4f5c\uff0c\u53ef\u4ee5\u5220\u9664\u5217\u8868\u4e2d\u7684\u7279\u5b9a\u8303\u56f4\u7684\u5143\u7d20\u3002\u4f8b\u5982\uff0c\u4ece\u4e00\u4e2a\u5217\u8868\u4e2d\u5220\u9664\u7d22\u5f152\u5230\u7d22\u5f155\u4e4b\u95f4\u7684\u5143\u7d20\u3002<\/p>\n<\/p>\n
\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
my_list = [10, 20, 30, 40, 50, 60, 70, 80, 90, 100]<\/p>\n
del my_list[2:5]<\/p>\n
print(my_list)  # \u8f93\u51fa: [10, 20, 60, 70, 80, 90, 100]<\/p>\n
<\/code><\/pre>\n<\/p>\n
5\u3001\u66ff\u6362\u5217\u8868\u4e2d\u7684\u5143\u7d20<\/p>\n<\/p>\n
\u5207\u7247\u64cd\u4f5c\u4e0d\u4ec5\u53ef\u4ee5\u63d0\u53d6\u5b50\u5217\u8868\uff0c\u8fd8\u53ef\u4ee5\u7528\u4e8e\u66ff\u6362\u5217\u8868\u4e2d\u7684\u5143\u7d20\u3002\u901a\u8fc7\u8d4b\u503c\u64cd\u4f5c\uff0c\u53ef\u4ee5\u5c06\u65b0\u7684\u5143\u7d20\u66ff\u6362\u5217\u8868\u4e2d\u6307\u5b9a\u8303\u56f4\u7684\u65e7\u5143\u7d20\u3002<\/p>\n<\/p>\n
\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
my_list = [10, 20, 30, 40, 50, 60, 70, 80, 90, 100]<\/p>\n
my_list[2:5] = [300, 400, 500]<\/p>\n
print(my_list)  # \u8f93\u51fa: [10, 20, 300, 400, 500, 60, 70, 80, 90, 100]<\/p>\n
<\/code><\/pre>\n<\/p>\n
6\u3001\u7ed3\u5408\u5faa\u73af\u548c\u5207\u7247\u8fdb\u884c\u6279\u91cf\u5904\u7406<\/p>\n<\/p>\n
\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u53ef\u4ee5\u7ed3\u5408\u5faa\u73af\u548c\u5207\u7247\u64cd\u4f5c\uff0c\u5bf9\u5217\u8868\u8fdb\u884c\u6279\u91cf\u5904\u7406\u3002\u4f8b\u5982\uff0c\u5c06\u4e00\u4e2a\u5217\u8868\u6309\u56fa\u5b9a\u957f\u5ea6\u5206\u5272\u6210\u591a\u4e2a\u5b50\u5217\u8868\uff0c\u8fdb\u884c\u9010\u4e2a\u5904\u7406\u3002<\/p>\n<\/p>\n
\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
my_list = [10, 20, 30, 40, 50, 60, 70, 80, 90, 100]<\/p>\n
chunk_size = 3<\/p>\n
for i in range(0, len(my_list), chunk_size):<\/p>\n
    sub_list = my_list[i:i + chunk_size]<\/p>\n
    print(sub_list)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e0a\u8ff0\u4ee3\u7801\u5c06\u8f93\u51fa\uff1a<\/p>\n<\/p>\n
[10, 20, 30]<\/p>\n
[40, 50, 60]<\/p>\n
[70, 80, 90]<\/p>\n
[100]<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u603b\u7ed3\uff1a<\/strong><\/p>\n
Python\u4e2d\u7684\u5217\u8868\u5207\u7247\u64cd\u4f5c\u662f\u4e00\u79cd\u5f3a\u5927\u4e14\u7075\u6d3b\u7684\u5de5\u5177\uff0c\u9002\u7528\u4e8e\u5404\u79cd\u6570\u636e\u5904\u7406\u548c\u5206\u6790\u573a\u666f\u3002\u901a\u8fc7\u638c\u63e1\u57fa\u672c\u5207\u7247\u64cd\u4f5c\u3001\u6b65\u957f\u53c2\u6570\u548c\u8d1f\u7d22\u5f15\u5207\u7247\u7b49\u6280\u672f\uff0c\u53ef\u4ee5\u8f7b\u677e\u5b9e\u73b0\u6570\u636e\u63d0\u53d6\u3001\u53cd\u8f6c\u3001\u95f4\u9694\u91c7\u6837\u3001\u5143\u7d20\u5220\u9664\u548c\u66ff\u6362\u7b49\u64cd\u4f5c\uff0c\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u6548\u7387\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u7ed3\u5408\u5faa\u73af\u548c\u5207\u7247\u64cd\u4f5c\uff0c\u53ef\u4ee5\u5bf9\u5217\u8868\u8fdb\u884c\u6279\u91cf\u5904\u7406\uff0c\u8fdb\u4e00\u6b65\u63d0\u5347\u6570\u636e\u5904\u7406\u7684\u7075\u6d3b\u6027\u548c\u6548\u7387\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
 \u5982\u4f55\u5728Python\u4e2d\u8fdb\u884c\u5217\u8868\u5207\u7247\uff1f<\/strong>
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