{"id":1068163,"date":"2024-12-31T16:40:58","date_gmt":"2024-12-31T08:40:58","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1068163.html"},"modified":"2024-12-31T16:41:01","modified_gmt":"2024-12-31T08:41:01","slug":"python%e5%a6%82%e4%bd%95%e4%b8%80%e6%ad%a5%e5%bb%ba%e7%ab%8b%e5%a4%9a%e4%b8%aa%e5%ad%97%e5%85%b8","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1068163.html","title":{"rendered":"python\u5982\u4f55\u4e00\u6b65\u5efa\u7acb\u591a\u4e2a\u5b57\u5178"},"content":{"rendered":"

\"python\u5982\u4f55\u4e00\u6b65\u5efa\u7acb\u591a\u4e2a\u5b57\u5178\"<\/p>\n

\n

search("python\u5982\u4f55\u4e00\u6b65\u5efa\u7acb\u591a\u4e2a\u5b57\u5178")<\/p>\n<\/p>\n<\/blockquote>\n

\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7<\/strong>\u5217\u8868\u5b58\u50a8\u591a\u4e2a\u5b57\u5178<\/code>\u3001<\/strong>\u5b57\u5178\u4e2d\u7684\u5b57\u5178<\/code>\u3001<\/strong>\u5faa\u73af\u52a8\u6001\u751f\u6210<\/code>\u548c<\/strong>\u5b57\u5178\u63a8\u5bfc\u5f0f<\/code>\u7b49\u65b9\u6cd5\u6765\u4e00\u6b21\u6027\u521b\u5efa\u591a\u4e2a\u5b57\u5178\u3002<\/strong>\u5176\u4e2d\uff0c\u4f7f\u7528\u5217\u8868\u5b58\u50a8\u591a\u4e2a\u5b57\u5178<\/code><\/strong>\u662f\u4e00\u79cd\u5e38\u89c1\u4e14\u9ad8\u6548\u7684\u65b9\u6cd5\u3002<\/p>\n<\/p>\n

\u4f7f\u7528\u5217\u8868\u5b58\u50a8\u591a\u4e2a\u5b57\u5178<\/strong><\/p>\n<\/p>\n

\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u5c06\u591a\u4e2a\u5b57\u5178\u5b58\u50a8\u5728\u4e00\u4e2a\u5217\u8868\u4e2d\u6765\u5b9e\u73b0\u4e00\u6b21\u6027\u521b\u5efa\u591a\u4e2a\u5b57\u5178\u3002\u8fd9\u79cd\u65b9\u6cd5\u4e0d\u4ec5\u4fbf\u4e8e\u7ba1\u7406\uff0c\u8fd8\u53ef\u4ee5\u5229\u7528\u5217\u8868\u7684\u5404\u79cd\u64cd\u4f5c\u65b9\u6cd5\u6765\u5904\u7406\u8fd9\u4e9b\u5b57\u5178\u3002<\/p>\n<\/p>\n

\u521b\u5efa\u548c\u521d\u59cb\u5316\u5b57\u5178\u5217\u8868<\/strong><\/p>\n<\/p>\n

\u9996\u5148\uff0c\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u7a7a\u5217\u8868\u7528\u4e8e\u5b58\u50a8\u5b57\u5178\uff0c\u7136\u540e\u901a\u8fc7\u5faa\u73af\u6216\u624b\u52a8\u6dfb\u52a0\u5b57\u5178\u5230\u5217\u8868\u4e2d\u3002<\/p>\n<\/p>\n

# \u521b\u5efa\u7a7a\u5217\u8868<\/p>\n
list_of_dicts = []<\/p>\n
\u624b\u52a8\u6dfb\u52a0\u5b57\u5178<\/strong><\/h2>\n
list_of_dicts.append({'id': 1, 'name': 'Alice'})<\/p>\n
list_of_dicts.append({'id': 2, 'name': 'Bob'})<\/p>\n
\u901a\u8fc7\u5faa\u73af\u52a8\u6001\u751f\u6210\u5b57\u5178<\/strong><\/h2>\n
for i in range(3, 6):<\/p>\n
    list_of_dicts.append({'id': i, 'name': f'Person_{i}'})<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c\u9996\u5148\u521b\u5efa\u4e86\u4e00\u4e2a\u7a7a\u5217\u8868list_of_dicts<\/code>\uff0c\u7136\u540e\u624b\u52a8\u6dfb\u52a0\u4e86\u4e24\u4e2a\u5b57\u5178\u3002\u63a5\u7740\uff0c\u901a\u8fc7\u5faa\u73af\u52a8\u6001\u751f\u6210\u4e86\u4e09\u4e2a\u5b57\u5178\uff0c\u5e76\u5c06\u5b83\u4eec\u6dfb\u52a0\u5230\u5217\u8868\u4e2d\u3002<\/p>\n<\/p>\n
\u8bbf\u95ee\u548c\u4fee\u6539\u5217\u8868\u4e2d\u7684\u5b57\u5178<\/strong><\/p>\n<\/p>\n
\u53ef\u4ee5\u901a\u8fc7\u5217\u8868\u7d22\u5f15\u6765\u8bbf\u95ee\u548c\u4fee\u6539\u7279\u5b9a\u7684\u5b57\u5178\u3002<\/p>\n<\/p>\n
# \u8bbf\u95ee\u7b2c\u4e00\u4e2a\u5b57\u5178<\/p>\n
first_dict = list_of_dicts[0]<\/p>\n
print(first_dict)  # \u8f93\u51fa: {'id': 1, 'name': 'Alice'}<\/p>\n
\u4fee\u6539\u7b2c\u4e8c\u4e2a\u5b57\u5178<\/strong><\/h2>\n
list_of_dicts[1]['name'] = 'Robert'<\/p>\n
print(list_of_dicts[1])  # \u8f93\u51fa: {'id': 2, 'name': 'Robert'}<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c\u901a\u8fc7\u7d22\u5f150<\/code>\u8bbf\u95ee\u4e86\u5217\u8868\u4e2d\u7684\u7b2c\u4e00\u4e2a\u5b57\u5178\uff0c\u5e76\u6253\u5370\u5176\u5185\u5bb9\u3002\u7136\u540e\uff0c\u4fee\u6539\u4e86\u5217\u8868\u4e2d\u7b2c\u4e8c\u4e2a\u5b57\u5178\u7684name<\/code>\u952e\u7684\u503c\uff0c\u5e76\u6253\u5370\u4fee\u6539\u540e\u7684\u5b57\u5178\u3002<\/p>\n<\/p>\n
\u904d\u5386\u5217\u8868\u4e2d\u7684\u5b57\u5178<\/strong><\/p>\n<\/p>\n
\u53ef\u4ee5\u4f7f\u7528\u5faa\u73af\u904d\u5386\u5217\u8868\u4e2d\u7684\u6bcf\u4e2a\u5b57\u5178\uff0c\u5e76\u8fdb\u884c\u76f8\u5e94\u7684\u64cd\u4f5c\u3002<\/p>\n<\/p>\n
for d in list_of_dicts:<\/p>\n
    print(d)<\/p>\n
    d['processed'] = True  # \u6dfb\u52a0\u65b0\u952e\u503c\u5bf9<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c\u904d\u5386\u4e86\u5217\u8868\u4e2d\u7684\u6bcf\u4e2a\u5b57\u5178\uff0c\u6253\u5370\u5176\u5185\u5bb9\uff0c\u5e76\u6dfb\u52a0\u4e86\u4e00\u4e2a\u65b0\u7684\u952e\u503c\u5bf9'processed': True<\/code>\u3002<\/p>\n<\/p>\n
\u4f7f\u7528\u5b57\u5178\u4e2d\u7684\u5b57\u5178<\/strong><\/p>\n<\/p>\n
\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u53ef\u80fd\u9700\u8981\u4f7f\u7528\u5b57\u5178\u4e2d\u7684\u5b57\u5178\u6765\u5b58\u50a8\u591a\u4e2a\u5b57\u5178\u3002\u8fd9\u6837\u53ef\u4ee5\u901a\u8fc7\u952e\u503c\u5bf9\u7684\u65b9\u5f0f\u65b9\u4fbf\u5730\u8bbf\u95ee\u6bcf\u4e2a\u5b57\u5178\u3002<\/p>\n<\/p>\n
\u521b\u5efa\u5d4c\u5957\u5b57\u5178<\/strong><\/p>\n<\/p>\n
\u53ef\u4ee5\u5728\u4e00\u4e2a\u5b57\u5178\u4e2d\u5d4c\u5957\u53e6\u4e00\u4e2a\u5b57\u5178\uff0c\u4ece\u800c\u521b\u5efa\u591a\u5c42\u6b21\u7684\u7ed3\u6784\u3002<\/p>\n<\/p>\n
nested_dict = {<\/p>\n
    'dict1': {'id': 1, 'name': 'Alice'},<\/p>\n
    'dict2': {'id': 2, 'name': 'Bob'},<\/p>\n
    'dict3': {'id': 3, 'name': 'Charlie'}<\/p>\n
}<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c\u521b\u5efa\u4e86\u4e00\u4e2a\u540d\u4e3anested_dict<\/code>\u7684\u5b57\u5178\uff0c\u5176\u4e2d\u5305\u542b\u4e09\u4e2a\u5d4c\u5957\u7684\u5b57\u5178dict1<\/code>\u3001dict2<\/code>\u548cdict3<\/code>\u3002<\/p>\n<\/p>\n
\u8bbf\u95ee\u548c\u4fee\u6539\u5d4c\u5957\u5b57\u5178<\/strong><\/p>\n<\/p>\n
\u53ef\u4ee5\u901a\u8fc7\u952e\u7684\u94fe\u5f0f\u8bbf\u95ee\u6765\u83b7\u53d6\u6216\u4fee\u6539\u5d4c\u5957\u5b57\u5178\u4e2d\u7684\u503c\u3002<\/p>\n<\/p>\n
# \u8bbf\u95ee\u5b57\u5178 dict1<\/p>\n
dict1 = nested_dict['dict1']<\/p>\n
print(dict1)  # \u8f93\u51fa: {'id': 1, 'name': 'Alice'}<\/p>\n
\u4fee\u6539\u5b57\u5178 dict2 \u7684 name \u503c<\/strong><\/h2>\n
nested_dict['dict2']['name'] = 'Robert'<\/p>\n
print(nested_dict['dict2'])  # \u8f93\u51fa: {'id': 2, 'name': 'Robert'}<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c\u901a\u8fc7\u952e'dict1'<\/code>\u8bbf\u95ee\u4e86\u5d4c\u5957\u5b57\u5178dict1<\/code>\uff0c\u5e76\u6253\u5370\u5176\u5185\u5bb9\u3002\u7136\u540e\uff0c\u4fee\u6539\u4e86\u5d4c\u5957\u5b57\u5178dict2<\/code>\u4e2dname<\/code>\u952e\u7684\u503c\uff0c\u5e76\u6253\u5370\u4fee\u6539\u540e\u7684\u5b57\u5178\u3002<\/p>\n<\/p>\n
\u904d\u5386\u5d4c\u5957\u5b57\u5178<\/strong><\/p>\n<\/p>\n
\u53ef\u4ee5\u4f7f\u7528\u5d4c\u5957\u7684\u5faa\u73af\u904d\u5386\u5d4c\u5957\u5b57\u5178\u4e2d\u7684\u6bcf\u4e2a\u5b57\u5178\uff0c\u5e76\u8fdb\u884c\u76f8\u5e94\u7684\u64cd\u4f5c\u3002<\/p>\n<\/p>\n
for key, value in nested_dict.items():<\/p>\n
    print(f'{key}: {value}')<\/p>\n
    value['processed'] = True  # \u6dfb\u52a0\u65b0\u952e\u503c\u5bf9<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c\u904d\u5386\u4e86\u5d4c\u5957\u5b57\u5178nested_dict<\/code>\u7684\u6bcf\u4e2a\u952e\u503c\u5bf9\uff0c\u6253\u5370\u5176\u5185\u5bb9\uff0c\u5e76\u5728\u6bcf\u4e2a\u5d4c\u5957\u5b57\u5178\u4e2d\u6dfb\u52a0\u4e86\u4e00\u4e2a\u65b0\u7684\u952e\u503c\u5bf9'processed': True<\/code>\u3002<\/p>\n<\/p>\n
\u5229\u7528\u5faa\u73af\u52a8\u6001\u751f\u6210\u5b57\u5178<\/strong><\/p>\n<\/p>\n
\u5728\u9700\u8981\u751f\u6210\u5927\u91cf\u5b57\u5178\u65f6\uff0c\u4f7f\u7528\u5faa\u73af\u662f\u4e00\u79cd\u9ad8\u6548\u7684\u65b9\u6cd5\u3002\u901a\u8fc7\u5faa\u73af\uff0c\u53ef\u4ee5\u52a8\u6001\u751f\u6210\u5b57\u5178\u5e76\u5c06\u5176\u5b58\u50a8\u5728\u5217\u8868\u6216\u5d4c\u5957\u5b57\u5178\u4e2d\u3002<\/p>\n<\/p>\n
\u4f7f\u7528\u5faa\u73af\u751f\u6210\u5b57\u5178\u5217\u8868<\/strong><\/p>\n<\/p>\n
\u53ef\u4ee5\u4f7f\u7528\u5faa\u73af\u751f\u6210\u591a\u4e2a\u5b57\u5178\uff0c\u5e76\u5c06\u5b83\u4eec\u6dfb\u52a0\u5230\u5217\u8868\u4e2d\u3002<\/p>\n<\/p>\n
list_of_dicts = []<\/p>\n
for i in range(10):<\/p>\n
    new_dict = {'id': i, 'value': f'value_{i}'}<\/p>\n
    list_of_dicts.append(new_dict)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c\u4f7f\u7528\u5faa\u73af\u751f\u6210\u4e8610\u4e2a\u5b57\u5178\uff0c\u6bcf\u4e2a\u5b57\u5178\u5305\u542bid<\/code>\u548cvalue<\/code>\u4e24\u4e2a\u952e\u503c\u5bf9\uff0c\u5e76\u5c06\u8fd9\u4e9b\u5b57\u5178\u6dfb\u52a0\u5230\u5217\u8868list_of_dicts<\/code>\u4e2d\u3002<\/p>\n<\/p>\n
\u4f7f\u7528\u5faa\u73af\u751f\u6210\u5d4c\u5957\u5b57\u5178<\/strong><\/p>\n<\/p>\n
\u540c\u6837\uff0c\u53ef\u4ee5\u4f7f\u7528\u5faa\u73af\u52a8\u6001\u751f\u6210\u5d4c\u5957\u5b57\u5178\u3002<\/p>\n<\/p>\n
nested_dict = {}<\/p>\n
for i in range(1, 11):<\/p>\n
    nested_dict[f'dict{i}'] = {'id': i, 'value': f'value_{i}'}<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c\u4f7f\u7528\u5faa\u73af\u751f\u6210\u4e8610\u4e2a\u5d4c\u5957\u5b57\u5178\uff0c\u6bcf\u4e2a\u5d4c\u5957\u5b57\u5178\u5305\u542bid<\/code>\u548cvalue<\/code>\u4e24\u4e2a\u952e\u503c\u5bf9\uff0c\u5e76\u5c06\u8fd9\u4e9b <\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
 \u5982\u4f55\u5728Python\u4e2d\u540c\u65f6\u521b\u5efa\u591a\u4e2a\u5b57\u5178\uff1f<\/strong>
\u5728Python\u4e2d\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u5b57\u5178\u63a8\u5bfc\u5f0f\u6216\u5faa\u73af\u6765\u540c\u65f6\u521b\u5efa\u591a\u4e2a\u5b57\u5178\u3002\u5b57\u5178\u63a8\u5bfc\u5f0f\u63d0\u4f9b\u4e86\u4e00\u79cd\u7b80\u6d01\u7684\u65b9\u5f0f\u6765\u751f\u6210\u5b57\u5178\u3002\u4f8b\u5982\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4e00\u4e2a\u5217\u8868\u548c\u4e00\u4e2a\u5b57\u5178\u63a8\u5bfc\u5f0f\u6765\u521b\u5efa\u591a\u4e2a\u5b57\u5178\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n
keys = ['dict1', 'dict2', 'dict3']\ndicts = {key: {} for key in keys}\n<\/code><\/pre>\n
\u8fd9\u6837\uff0c\u60a8\u5c06\u5f97\u5230\u4e00\u4e2a\u5305\u542b\u4e09\u4e2a\u7a7a\u5b57\u5178\u7684\u5b57\u5178\uff0c\u60a8\u53ef\u4ee5\u6839\u636e\u9700\u8981\u586b\u5145\u5b83\u4eec\u3002<\/p>\n
\u5728Python\u4e2d\u5982\u4f55\u4f7f\u7528\u5217\u8868\u751f\u6210\u591a\u4e2a\u5b57\u5178\uff1f<\/strong>
\u4f7f\u7528\u5217\u8868\u53ef\u4ee5\u65b9\u4fbf\u5730\u751f\u6210\u591a\u4e2a\u5b57\u5178\u3002\u4f8b\u5982\uff0c\u60a8\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u5305\u542b\u591a\u4e2a\u5b57\u5178\u7684\u5217\u8868\uff0c\u6bcf\u4e2a\u5b57\u5178\u4ee3\u8868\u4e0d\u540c\u7684\u7ed3\u6784\u6216\u6570\u636e\u3002\u4ee5\u4e0b\u793a\u4f8b\u5c55\u793a\u4e86\u5982\u4f55\u5b9e\u73b0\uff1a<\/p>\n
dicts_list = [{} for _ in range(3)]\n<\/code><\/pre>\n
\u8fd9\u6bb5\u4ee3\u7801\u5c06\u521b\u5efa\u4e00\u4e2a\u5305\u542b\u4e09\u4e2a\u7a7a\u5b57\u5178\u7684\u5217\u8868\uff0c\u60a8\u53ef\u4ee5\u5728\u540e\u7eed\u64cd\u4f5c\u4e2d\u4e3a\u6bcf\u4e2a\u5b57\u5178\u6dfb\u52a0\u952e\u503c\u5bf9\u3002<\/p>\n
\u662f\u5426\u53ef\u4ee5\u5728\u521b\u5efa\u5b57\u5178\u65f6\u76f4\u63a5\u521d\u59cb\u5316\u6570\u636e\uff1f<\/strong>
\u786e\u5b9e\u53ef\u4ee5\u76f4\u63a5\u521d\u59cb\u5316\u5b57\u5178\u3002\u5728\u521b\u5efa\u5b57\u5178\u65f6\uff0c\u60a8\u53ef\u4ee5\u540c\u65f6\u6dfb\u52a0\u952e\u503c\u5bf9\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff0c\u5c55\u793a\u4e86\u5982\u4f55\u5728\u521b\u5efa\u591a\u4e2a\u5b57\u5178\u65f6\u521d\u59cb\u5316\u6570\u636e\uff1a<\/p>\n
dicts = {\n    'dict1': {'name': 'Alice', 'age': 25},\n    'dict2': {'name': 'Bob', 'age': 30},\n    'dict3': {'name': 'Charlie', 'age': 35}\n}\n<\/code><\/pre>\n
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