Connection to github.com timed out. (connect timeout=15)

时间: 2023-12-03 12:45:13 浏览: 262
这个问题是由于连接到GitHub超时导致的。有几种解决方法可以尝试解决这个问题。 首先,你可以尝试增加连接超时时间。你可以在VSCode的设置中找到"git.timeout"选项,并将其增加到一个更大的值,例如30或60。这样做可以给连接更多的时间来建立。 另外,你可以尝试使用SSH协议来管理你的项目。这个方法需要一些额外的设置,但是一旦设置完成,后续的使用体验会更好,而且不容易遇到连接超时的问题。你可以按照以下步骤进行设置: 1. 首先,你需要生成一个SSH密钥对。你可以使用命令"ssh-keygen"来生成。生成后,你会得到一个公钥和一个私钥。 2. 接下来,你需要将公钥添加到你的GitHub帐户中。你可以在GitHub的设置中找到"SSH and GPG keys"选项,并将公钥添加进去。 3. 然后,你需要将你的项目从HTTPS协议切换到SSH协议。你可以使用命令"git remote set-url origin [email protected]:your_username/your_repository.git"来进行切换。 通过使用SSH协议,你将能够在不经常遇到连接超时的情况下进行代码的pull和push操作。 希望这些解决方法能够帮助你解决连接超时的问题。如果问题仍然存在,请尝试检查你的网络连接或联系GitHub支持团队以获取更多帮助。 #### 引用[.reference_title] - *1* *3* [vscode 上传 github 问题 LibreSSL SSL_connect: Operation timed out in connection to github.com:443](https://blog.csdn.net/qq_42067550/article/details/122122872)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^control_2,239^v3^insert_chatgpt"}} ] [.reference_item] - *2* [[GitHub] Failed connect to github.com:443; Connection timed out 的三种解决方案](https://blog.csdn.net/weixin_42902669/article/details/114699679)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^control_2,239^v3^insert_chatgpt"}} ] [.reference_item] [ .reference_list ]
阅读全文

相关推荐

yolov12源代码自带的app.py为什么运行不了:ERROR: Exception in ASGI application Traceback (most recent call last): File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\uvicorn\protocols\http\h11_impl.py", line 403, in run_asgi result = await app( # type: ignore[func-returns-value] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\uvicorn\middleware\proxy_headers.py", line 60, in __call__ return await self.app(scope, receive, send) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\fastapi\applications.py", line 1054, in __call__ await super().__call__(scope, receive, send) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\applications.py", line 112, in __call__ await self.middleware_stack(scope, receive, send) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\middleware\errors.py", line 187, in __call__ raise exc File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\middleware\errors.py", line 165, in __call__ await self.app(scope, receive, _send) File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio\route_utils.py", line 761, in __call__ await self.app(scope, receive, send) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\middleware\exceptions.py", line 62, in __call__ await wrap_app_handling_exceptions(self.app, conn)(scope, receive, send) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\_exception_handler.py", line 53, in wrapped_app raise exc File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\_exception_handler.py", line 42, in wrapped_app await app(scope, receive, sender) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\routing.py", line 714, in __call__ await self.middleware_stack(scope, receive, send) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\routing.py", line 734, in app await route.handle(scope, receive, send) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\routing.py", line 288, in handle await self.app(scope, receive, send) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\routing.py", line 76, in app await wrap_app_handling_exceptions(app, request)(scope, receive, send) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\_exception_handler.py", line 53, in wrapped_app raise exc File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\_exception_handler.py", line 42, in wrapped_app await app(scope, receive, sender) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\routing.py", line 73, in app response = await f(request) ^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\fastapi\routing.py", line 301, in app raw_response = await run_endpoint_function( ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\fastapi\routing.py", line 214, in run_endpoint_function return await run_in_threadpool(dependant.call, **values) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\concurrency.py", line 37, in run_in_threadpool return await anyio.to_thread.run_sync(func) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\anyio\to_thread.py", line 56, in run_sync return await get_async_backend().run_sync_in_worker_thread( ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\anyio\_backends\_asyncio.py", line 2470, in run_sync_in_worker_thread return await future ^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\anyio\_backends\_asyncio.py", line 967, in run result = context.run(func, *args) ^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio\routes.py", line 431, in main gradio_api_info = api_info(False) ^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio\routes.py", line 460, in api_info app.api_info = app.get_blocks().get_api_info() ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio\blocks.py", line 2852, in get_api_info python_type = client_utils.json_schema_to_python_type(info) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio_client\utils.py", line 893, in json_schema_to_python_type type_ = _json_schema_to_python_type(schema, schema.get("$defs")) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio_client\utils.py", line 947, in _json_schema_to_python_type des = [ ^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio_client\utils.py", line 948, in f"{n}: {_json_schema_to_python_type(v, defs)}{get_desc(v)}" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio_client\utils.py", line 955, in _json_schema_to_python_type f"str, {_json_schema_to_python_type(schema['additionalProperties'], defs)}" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio_client\utils.py", line 901, in _json_schema_to_python_type type_ = get_type(schema) ^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio_client\utils.py", line 863, in get_type if "const" in schema: ^^^^^^^^^^^^^^^^^ TypeError: argument of type 'bool' is not iterable ERROR: Exception in ASGI application Traceback (most recent call last): File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\uvicorn\protocols\http\h11_impl.py", line 403, in run_asgi result = await app( # type: ignore[func-returns-value] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\uvicorn\middleware\proxy_headers.py", line 60, in __call__ return await self.app(scope, receive, send) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\fastapi\applications.py", line 1054, in __call__ await super().__call__(scope, receive, send) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\applications.py", line 112, in __call__ await self.middleware_stack(scope, receive, send) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\middleware\errors.py", line 187, in __call__ raise exc File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\middleware\errors.py", line 165, in __call__ await self.app(scope, receive, _send) File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio\route_utils.py", line 761, in __call__ await self.app(scope, receive, send) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\middleware\exceptions.py", line 62, in __call__ await wrap_app_handling_exceptions(self.app, conn)(scope, receive, send) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\_exception_handler.py", line 53, in wrapped_app raise exc File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\_exception_handler.py", line 42, in wrapped_app await app(scope, receive, sender) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\routing.py", line 714, in __call__ await self.middleware_stack(scope, receive, send) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\routing.py", line 734, in app await route.handle(scope, receive, send) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\routing.py", line 288, in handle await self.app(scope, receive, send) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\routing.py", line 76, in app await wrap_app_handling_exceptions(app, request)(scope, receive, send) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\_exception_handler.py", line 53, in wrapped_app raise exc File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\_exception_handler.py", line 42, in wrapped_app await app(scope, receive, sender) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\routing.py", line 73, in app response = await f(request) ^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\fastapi\routing.py", line 301, in app raw_response = await run_endpoint_function( ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\fastapi\routing.py", line 214, in run_endpoint_function return await run_in_threadpool(dependant.call, **values) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\concurrency.py", line 37, in run_in_threadpool return await anyio.to_thread.run_sync(func) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\anyio\to_thread.py", line 56, in run_sync return await get_async_backend().run_sync_in_worker_thread( ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\anyio\_backends\_asyncio.py", line 2470, in run_sync_in_worker_thread return await future ^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\anyio\_backends\_asyncio.py", line 967, in run result = context.run(func, *args) ^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio\routes.py", line 431, in main gradio_api_info = api_info(False) ^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio\routes.py", line 460, in api_info app.api_info = app.get_blocks().get_api_info() ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio\blocks.py", line 2852, in get_api_info python_type = client_utils.json_schema_to_python_type(info) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio_client\utils.py", line 893, in json_schema_to_python_type type_ = _json_schema_to_python_type(schema, schema.get("$defs")) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio_client\utils.py", line 947, in _json_schema_to_python_type des = [ ^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio_client\utils.py", line 948, in f"{n}: {_json_schema_to_python_type(v, defs)}{get_desc(v)}" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio_client\utils.py", line 955, in _json_schema_to_python_type f"str, {_json_schema_to_python_type(schema['additionalProperties'], defs)}" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio_client\utils.py", line 901, in _json_schema_to_python_type type_ = get_type(schema) ^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio_client\utils.py", line 863, in get_type if "const" in schema: ^^^^^^^^^^^^^^^^^ TypeError: argument of type 'bool' is not iterable ERROR: Exception in ASGI application Traceback (most recent call last): File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\uvicorn\protocols\http\h11_impl.py", line 403, in run_asgi result = await app( # type: ignore[func-returns-value] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\uvicorn\middleware\proxy_headers.py", line 60, in __call__ return await self.app(scope, receive, send) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\fastapi\applications.py", line 1054, in __call__ await super().__call__(scope, receive, send) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\applications.py", line 112, in __call__ await self.middleware_stack(scope, receive, send) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\middleware\errors.py", line 187, in __call__ raise exc File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\middleware\errors.py", line 165, in __call__ await self.app(scope, receive, _send) File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio\route_utils.py", line 761, in __call__ await self.app(scope, receive, send) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\middleware\exceptions.py", line 62, in __call__ await wrap_app_handling_exceptions(self.app, conn)(scope, receive, send) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\_exception_handler.py", line 53, in wrapped_app raise exc File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\_exception_handler.py", line 42, in wrapped_app await app(scope, receive, sender) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\routing.py", line 714, in __call__ await self.middleware_stack(scope, receive, send) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\routing.py", line 734, in app await route.handle(scope, receive, send) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\routing.py", line 288, in handle await self.app(scope, receive, send) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\routing.py", line 76, in app await wrap_app_handling_exceptions(app, request)(scope, receive, send) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\_exception_handler.py", line 53, in wrapped_app raise exc File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\_exception_handler.py", line 42, in wrapped_app await app(scope, receive, sender) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\routing.py", line 73, in app response = await f(request) ^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\fastapi\routing.py", line 301, in app raw_response = await run_endpoint_function( ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\fastapi\routing.py", line 214, in run_endpoint_function return await run_in_threadpool(dependant.call, **values) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\concurrency.py", line 37, in run_in_threadpool return await anyio.to_thread.run_sync(func) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\anyio\to_thread.py", line 56, in run_sync return await get_async_backend().run_sync_in_worker_thread( ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\anyio\_backends\_asyncio.py", line 2470, in run_sync_in_worker_thread return await future ^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\anyio\_backends\_asyncio.py", line 967, in run result = context.run(func, *args) ^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio\routes.py", line 431, in main gradio_api_info = api_info(False) ^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio\routes.py", line 460, in api_info app.api_info = app.get_blocks().get_api_info() ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio\blocks.py", line 2852, in get_api_info python_type = client_utils.json_schema_to_python_type(info) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio_client\utils.py", line 893, in json_schema_to_python_type type_ = _json_schema_to_python_type(schema, schema.get("$defs")) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio_client\utils.py", line 947, in _json_schema_to_python_type des = [ ^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio_client\utils.py", line 948, in f"{n}: {_json_schema_to_python_type(v, defs)}{get_desc(v)}" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio_client\utils.py", line 955, in _json_schema_to_python_type f"str, {_json_schema_to_python_type(schema['additionalProperties'], defs)}" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio_client\utils.py", line 901, in _json_schema_to_python_type type_ = get_type(schema) ^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio_client\utils.py", line 863, in get_type if "const" in schema: ^^^^^^^^^^^^^^^^^ TypeError: argument of type 'bool' is not iterable ERROR: Exception in ASGI application Traceback (most recent call last): File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\uvicorn\protocols\http\h11_impl.py", line 403, in run_asgi result = await app( # type: ignore[func-returns-value] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\uvicorn\middleware\proxy_headers.py", line 60, in __call__ return await self.app(scope, receive, send) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\fastapi\applications.py", line 1054, in __call__ await super().__call__(scope, receive, send) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\applications.py", line 112, in __call__ await self.middleware_stack(scope, receive, send) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\middleware\errors.py", line 187, in __call__ raise exc File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\middleware\errors.py", line 165, in __call__ await self.app(scope, receive, _send) File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio\route_utils.py", line 761, in __call__ await self.app(scope, receive, send) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\middleware\exceptions.py", line 62, in __call__ await wrap_app_handling_exceptions(self.app, conn)(scope, receive, send) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\_exception_handler.py", line 53, in wrapped_app raise exc File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\_exception_handler.py", line 42, in wrapped_app await app(scope, receive, sender) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\routing.py", line 714, in __call__ await self.middleware_stack(scope, receive, send) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\routing.py", line 734, in app await route.handle(scope, receive, send) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\routing.py", line 288, in handle await self.app(scope, receive, send) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\routing.py", line 76, in app await wrap_app_handling_exceptions(app, request)(scope, receive, send) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\_exception_handler.py", line 53, in wrapped_app raise exc File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\_exception_handler.py", line 42, in wrapped_app await app(scope, receive, sender) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\routing.py", line 73, in app response = await f(request) ^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\fastapi\routing.py", line 301, in app raw_response = await run_endpoint_function( ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\fastapi\routing.py", line 214, in run_endpoint_function return await run_in_threadpool(dependant.call, **values) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\concurrency.py", line 37, in run_in_threadpool return await anyio.to_thread.run_sync(func) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\anyio\to_thread.py", line 56, in run_sync return await get_async_backend().run_sync_in_worker_thread( ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\anyio\_backends\_asyncio.py", line 2470, in run_sync_in_worker_thread return await future ^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\anyio\_backends\_asyncio.py", line 967, in run result = context.run(func, *args) ^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio\routes.py", line 431, in main gradio_api_info = api_info(False) ^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio\routes.py", line 460, in api_info app.api_info = app.get_blocks().get_api_info() ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio\blocks.py", line 2852, in get_api_info python_type = client_utils.json_schema_to_python_type(info) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio_client\utils.py", line 893, in json_schema_to_python_type type_ = _json_schema_to_python_type(schema, schema.get("$defs")) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio_client\utils.py", line 947, in _json_schema_to_python_type des = [ ^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio_client\utils.py", line 948, in f"{n}: {_json_schema_to_python_type(v, defs)}{get_desc(v)}" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio_client\utils.py", line 955, in _json_schema_to_python_type f"str, {_json_schema_to_python_type(schema['additionalProperties'], defs)}" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio_client\utils.py", line 901, in _json_schema_to_python_type type_ = get_type(schema) ^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio_client\utils.py", line 863, in get_type if "const" in schema: ^^^^^^^^^^^^^^^^^ TypeError: argument of type 'bool' is not iterable ERROR: Exception in ASGI application Traceback (most recent call last): File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\uvicorn\protocols\http\h11_impl.py", line 403, in run_asgi result = await app( # type: ignore[func-returns-value] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\uvicorn\middleware\proxy_headers.py", line 60, in __call__ return await self.app(scope, receive, send) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\fastapi\applications.py", line 1054, in __call__ await super().__call__(scope, receive, send) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\applications.py", line 112, in __call__ await self.middleware_stack(scope, receive, send) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\middleware\errors.py", line 187, in __call__ raise exc File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\middleware\errors.py", line 165, in __call__ await self.app(scope, receive, _send) File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio\route_utils.py", line 761, in __call__ await self.app(scope, receive, send) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\middleware\exceptions.py", line 62, in __call__ await wrap_app_handling_exceptions(self.app, conn)(scope, receive, send) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\_exception_handler.py", line 53, in wrapped_app raise exc File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\_exception_handler.py", line 42, in wrapped_app await app(scope, receive, sender) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\routing.py", line 714, in __call__ await self.middleware_stack(scope, receive, send) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\routing.py", line 734, in app await route.handle(scope, receive, send) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\routing.py", line 288, in handle await self.app(scope, receive, send) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\routing.py", line 76, in app await wrap_app_handling_exceptions(app, request)(scope, receive, send) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\_exception_handler.py", line 53, in wrapped_app raise exc File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\_exception_handler.py", line 42, in wrapped_app await app(scope, receive, sender) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\routing.py", line 73, in app response = await f(request) ^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\fastapi\routing.py", line 301, in app raw_response = await run_endpoint_function( ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\fastapi\routing.py", line 214, in run_endpoint_function return await run_in_threadpool(dependant.call, **values) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\starlette\concurrency.py", line 37, in run_in_threadpool return await anyio.to_thread.run_sync(func) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\anyio\to_thread.py", line 56, in run_sync return await get_async_backend().run_sync_in_worker_thread( ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\anyio\_backends\_asyncio.py", line 2470, in run_sync_in_worker_thread return await future ^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\anyio\_backends\_asyncio.py", line 967, in run result = context.run(func, *args) ^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio\routes.py", line 431, in main gradio_api_info = api_info(False) ^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio\routes.py", line 460, in api_info app.api_info = app.get_blocks().get_api_info() ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio\blocks.py", line 2852, in get_api_info python_type = client_utils.json_schema_to_python_type(info) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio_client\utils.py", line 893, in json_schema_to_python_type type_ = _json_schema_to_python_type(schema, schema.get("$defs")) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio_client\utils.py", line 947, in _json_schema_to_python_type des = [ ^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio_client\utils.py", line 948, in f"{n}: {_json_schema_to_python_type(v, defs)}{get_desc(v)}" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio_client\utils.py", line 955, in _json_schema_to_python_type f"str, {_json_schema_to_python_type(schema['additionalProperties'], defs)}" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio_client\utils.py", line 901, in _json_schema_to_python_type type_ = get_type(schema) ^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio_client\utils.py", line 863, in get_type if "const" in schema: ^^^^^^^^^^^^^^^^^ TypeError: argument of type 'bool' is not iterable Traceback (most recent call last): File "G:\yfwh\yolov12-main\app.py", line 165, in <module> gradio_app.launch() File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio\blocks.py", line 2465, in launch raise ValueError( ValueError: When localhost is not accessible, a shareable link must be created. Please set share=True or check your proxy settings to allow access to localhost. Exception in thread Thread-5 (_do_normal_analytics_request): Traceback (most recent call last): File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\httpx\_transports\default.py", line 101, in map_httpcore_exceptions yield File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\httpx\_transports\default.py", line 250, in handle_request resp = self._pool.handle_request(req) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\httpcore\_sync\connection_pool.py", line 256, in handle_request raise exc from None File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\httpcore\_sync\connection_pool.py", line 236, in handle_request response = connection.handle_request( ^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\httpcore\_sync\connection.py", line 101, in handle_request raise exc File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\httpcore\_sync\connection.py", line 78, in handle_request stream = self._connect(request) ^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\httpcore\_sync\connection.py", line 156, in _connect stream = stream.start_tls(**kwargs) ^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\httpcore\_backends\sync.py", line 154, in start_tls with map_exceptions(exc_map): File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\contextlib.py", line 158, in __exit__ self.gen.throw(typ, value, traceback) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\httpcore\_exceptions.py", line 14, in map_exceptions raise to_exc(exc) from exc httpcore.ConnectTimeout: _ssl.c:989: The handshake operation timed out The above exception was the direct cause of the following exception: Traceback (most recent call last): File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\threading.py", line 1045, in _bootstrap_inner self.run() File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\threading.py", line 982, in run self._target(*self._args, **self._kwargs) File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio\analytics.py", line 70, in _do_normal_analytics_request data["ip_address"] = get_local_ip_address() ^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\site-packages\gradio\analytics.py", line 131, in get_local_ip_address ip_address = httpx.get( ^^^^^^^^^^ File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\httpx\_api.py", line 195, in get return request( ^^^^^^^^ File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\httpx\_api.py", line 109, in request return client.request( ^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\httpx\_client.py", line 825, in request return self.send(request, auth=auth, follow_redirects=follow_redirects) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\httpx\_client.py", line 914, in send response = self._send_handling_auth( ^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\httpx\_client.py", line 942, in _send_handling_auth response = self._send_handling_redirects( ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\httpx\_client.py", line 979, in _send_handling_redirects response = self._send_single_request(request) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\httpx\_client.py", line 1014, in _send_single_request response = transport.handle_request(request) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\httpx\_transports\default.py", line 249, in handle_request with map_httpcore_exceptions(): File "C:\Users\yanfwh\.conda\envs\yolov12\Lib\contextlib.py", line 158, in __exit__ self.gen.throw(typ, value, traceback) File "C:\Users\yanfwh\AppData\Roaming\Python\Python311\site-packages\httpx\_transports\default.py", line 118, in map_httpcore_exceptions raise mapped_exc(message) from exc httpx.ConnectTimeout: _ssl.c:989: The handshake operation timed out

pdf

最新推荐

recommend-type

中软国际Java基础课件Chapter.ppt

中软国际Java基础课件Chapter.ppt
recommend-type

自动化生产线安装与调试全套课件.ppt

自动化生产线安装与调试全套课件.ppt
recommend-type

第9周小课用Matlab实现信号波形.ppt

第9周小课用Matlab实现信号波形.ppt
recommend-type

事故二叉树计算机算法.doc

事故二叉树计算机算法.doc
recommend-type

CAD第一单元课件.ppt

CAD第一单元课件.ppt
recommend-type

Evc Sql CE 程序开发实践与样例代码分享

在详细解释标题、描述和标签中提及的知识点之前,需要指出“压缩包子文件的文件名称列表”中的“8”可能是不完整的上下文信息。由于缺乏具体的文件列表内容,我们将主要集中在如何理解“Evc Sql CE 程序样例代码”这一主题。 标题“Evc Sql CE 程序样例代码”直接指向一个程序开发样例代码,其中“Evc”可能是某种环境或工具的缩写,但由于没有更多的上下文信息,很难精确地解释这个缩写指的是什么。不过,“Sql CE”则明确地指向了“SQL Server Compact Edition”,它是微软推出的一个轻量级数据库引擎,专为嵌入式设备和小型应用程序设计。 ### SQL Server Compact Edition (SQL CE) SQL Server Compact Edition(简称SQL CE)是微软公司提供的一个嵌入式数据库解决方案,它支持多种平台和编程语言。SQL CE适合用于资源受限的环境,如小型应用程序、移动设备以及不需要完整数据库服务器功能的场合。 SQL CE具备如下特点: - **轻量级**: 轻便易用,对系统资源占用较小。 - **易于部署**: 可以轻松地将数据库文件嵌入到应用程序中,无需单独安装。 - **支持多平台**: 能够在多种操作系统上运行,包括Windows、Windows CE和Windows Mobile等。 - **兼容性**: 支持标准的SQL语法,并且在一定程度上与SQL Server数据库系统兼容。 - **编程接口**: 提供了丰富的API供开发者进行数据库操作,支持.NET Framework和本机代码。 ### 样例代码的知识点 “Evc Sql CE 程序样例代码”这部分信息表明,存在一些示例代码,这些代码可以指导开发者如何使用SQL CE进行数据库操作。样例代码一般会涵盖以下几个方面: 1. **数据库连接**: 如何创建和管理到SQL CE数据库的连接。 2. **数据操作**: 包括数据的增删改查(CRUD)操作,这些是数据库操作中最基本的元素。 3. **事务处理**: 如何在SQL CE中使用事务,保证数据的一致性和完整性。 4. **数据表操作**: 如何创建、删除数据表,以及修改表结构。 5. **数据查询**: 利用SQL语句查询数据,包括使用 SELECT、JOIN等语句。 6. **数据同步**: 如果涉及到移动应用场景,可能需要了解如何与远程服务器进行数据同步。 7. **异常处理**: 在数据库操作中如何处理可能发生的错误和异常。 ### 标签中的知识点 标签“Evc Sql CE 程序样例代码”与标题内容基本一致,强调了这部分内容是关于使用SQL CE的示例代码。标签通常用于标记和分类信息,方便在搜索引擎或者数据库中检索和识别特定内容。在实际应用中,开发者可以根据这样的标签快速找到相关的样例代码,以便于学习和参考。 ### 总结 根据标题、描述和标签,我们可以确定这篇内容是关于SQL Server Compact Edition的程序样例代码。由于缺乏具体的代码文件名列表,无法详细分析每个文件的内容。不过,上述内容已经概述了SQL CE的关键特性,以及开发者在参考样例代码时可能关注的知识点。 对于希望利用SQL CE进行数据库开发的程序员来说,样例代码是一个宝贵的资源,可以帮助他们快速理解和掌握如何在实际应用中运用该数据库技术。同时,理解SQL CE的特性、优势以及编程接口,将有助于开发者设计出更加高效、稳定的嵌入式数据库解决方案。
recommend-type

【浪潮FS6700交换机配置实战】:生产环境快速部署策略与技巧

# 1. 浪潮FS6700交换机概述 浪潮FS6700交换机是一款高端、具备高密度端口的全千兆交换机。它采用模块化设计,支持万兆上行,可提供灵活的端口组合和高带宽解决方案,满足了企业网络对于高性能、高可靠性的需求。浪潮FS6700交换机通常部署在企业网络的核心层或汇聚层,不仅提供强劲的网络数据交换能力,而且支持丰富的路由协议和安全特性,为中大型网络构建提供了强有力的保障。 接下来,我们将深
recommend-type

YOLO11训练批次参考

<think>我们正在讨论YOLOv11的训练批次设置。首先,需要明确的是,截至2023年10月,官方并没有发布YOLOv11版本。YOLO系列的最新版本是YOLOv8(由Ultralytics发布)。因此,这里可能指的是YOLO的某个变体或非官方版本。不过,我们可以基于YOLO系列的一般训练实践来讨论训练批次(batch size)的设置。 训练批次(batch size)是指在训练神经网络时,每次迭代中用于计算梯度并更新权重的样本数量。设置合适的batch size对训练效果和速度有重要影响。 ### 影响batch size选择的因素: 1. **硬件限制**:显存大小是主要限制因素
recommend-type

数据库考试复习必备五套习题精讲

根据给定的文件信息,本文将详细解释数据库习题相关知识点。首先,从标题中我们可以得知,该文件为数据库习题集,包含五套习题卷,非常适合用来准备考试。由于文件描述中提到考完试后才打算分享,说明这些习题具有一定的质量和难度,可以作为考试前的必备材料。 首先,我们来解释“数据库”这一核心概念。数据库是存储、管理、处理和检索信息的系统,它能够帮助我们有效地存储大量的数据,并在需要的时候快速访问。数据库管理系统(DBMS)是负责数据库创建、维护和操作的软件,常见的数据库管理系统包括MySQL、Oracle、Microsoft SQL Server、PostgreSQL和SQLite等。 数据库习题通常包括以下知识点: 1. 数据库设计:设计数据库时需要考虑实体-关系模型(ER模型)、规范化理论以及如何设计表结构。重点包括识别实体、确定实体属性、建立实体之间的关系以及表之间的关联。规范化是指将数据库表结构进行合理化分解,以减少数据冗余和提高数据一致性。 2. SQL语言:结构化查询语言(SQL)是用于管理数据库的标准计算机语言,它包括数据查询、数据操纵、数据定义和数据控制四个方面的功能。对于数据库习题来说,重点会涉及到以下SQL语句: - SELECT:用于从数据库中查询数据。 - INSERT、UPDATE、DELETE:用于向数据库中插入、更新或删除数据。 - CREATE TABLE、ALTER TABLE、DROP TABLE:用于创建、修改或删除表结构。 - JOIN:用于连接两个或多个表来查询跨越表的数据。 - GROUP BY 和 HAVING:用于对数据进行分组统计和筛选。 -事务处理:包括事务的ACID属性(原子性、一致性、隔离性、持久性)等。 3. 数据库操作:涉及实际操作数据库的过程,包括数据导入导出、备份与恢复、索引创建与优化等。这些内容能够帮助理解如何高效地管理数据。 4. 数据库安全:保障数据库不受未授权访问和破坏的机制,例如用户权限管理、视图、存储过程等安全措施。 5. 数据库优化:如何提升数据库的性能,包括查询优化、数据库配置优化、索引策略、系统资源监控等。 6. 数据库应用开发:如何利用数据库在应用程序中实现数据的持久化存储,如数据库连接、事务管理、数据访问对象(DAO)设计模式等。 7. 高级主题:涉及到复杂查询、数据库触发器、存储过程的编写和优化,以及可能包含的特定数据库系统的特定特性(如Oracle的PL/SQL编程等)。 由于文件名称列表只提供“数据库习题”这一个信息点,我们无法得知具体的习题内容和难度,但是可以肯定的是,这份习题集应该覆盖了上述所提到的知识点。对于考生来说,这些习题将帮助他们巩固理论知识,并且提高解决实际问题的能力,是考试前准备的有力工具。 在准备数据库相关的考试时,建议先从基础概念开始复习,然后逐步过渡到SQL语法和数据库设计的实践操作。在习题练习中,注意不要仅限于死记硬背,更重要的是理解每一个操作背后的逻辑和原理。如果可能的话,实际操作一个数据库,将理论知识应用到实践中去,这会帮助你更加深刻地理解数据库的工作机制。最后,反复练习模拟题,可以帮助你熟悉考试的题型和难度,提高考试时的应试技巧。
recommend-type

【浪潮FS6700交换机故障诊断与排除】:掌握这些方法,让你的网络稳定如初

# 1. 浪潮FS6700交换机故障诊断基础知识 在本章中,我们将探讨浪潮FS6700交换机故障诊断的基础知识,为后续章节中更深层次的理论和实践内容打下坚实的基础。我们将从以下几个方面入手,逐步深化对故障诊断的认识: ## 1.1 交换机故障诊断的重要性 交换机作为网络的核心设备,其稳定性和性能直接影响着整个网络的运行效率。因此,准确且快速地诊断和解决交换机故障是网