如何从 aiohttp.web 处理程序返回 HTML 页面?
有没有类似于json_response() 的东西?
我正在使用flask和sqlalchemy制作用于娱乐的基本API。我在sqlalchemy文档中读到,您只能使用一个带有连接字符串的引擎。应该如何在app> __init__.py文件中构建结构?在运行以启动Flask服务器的Flask文件中?这是我的github存储库,因为我认为仅查看当前应用程序结构及其可能存在的任何缺陷就比较容易。https://github.com/JayHelton/Geekdom_Web_App
在我的查询方法中,我每次都在创建一个新的数据库引擎,并且似乎正在运行,但是如果多个人尝试调用这些方法,我不想遇到任何问题。谢谢!
在干净的 venv 中安装某些东西的示例:
$ rm -rf venv && python3.8 -m venv venv && ./venv/bin/python -m pip install -U pip && ./venv/bin/python -m pip install requests
Collecting pip
Using cached https://files.pythonhosted.org/packages/60/65/16487a7c4e0f95bb3fc89c2e377be331fd496b7a9b08fd3077de7f3ae2cf/pip-20.0-py2.py3-none-any.whl
Installing collected packages: pip
Found existing installation: pip 19.2.3
Uninstalling pip-19.2.3:
Successfully uninstalled pip-19.2.3
Successfully installed pip-20.0
Traceback (most recent call last):
File "/opt/local/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/runpy.py", line 193, in _run_module_as_main
return _run_code(code, main_globals, None,
...
File "/Users/messa/test/venv/lib/python3.8/site-packages/pip/_internal/distributions/__init__.py", line 1, in <module>
from pip._internal.distributions.source import SourceDistribution
ImportError: cannot import name 'SourceDistribution' from 'pip._internal.distributions.source' …Run Code Online (Sandbox Code Playgroud) 我想使用asyncio.gather() “并行”运行一些任务:
import asyncio
async def foo():
return 42
async def main():
results = await asyncio.gather(foo() for i in range(10))
print(results)
asyncio.run(main())
Run Code Online (Sandbox Code Playgroud)
但它失败了RuntimeError: Task got bad yield:
/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/asyncio/events.py:88: RuntimeWarning: coroutine 'foo' was never awaited
self._context.run(self._callback, *self._args)
RuntimeWarning: Enable tracemalloc to get the object allocation traceback
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/asyncio/runners.py", line 43, in run
return loop.run_until_complete(main)
File "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/asyncio/base_events.py", line 583, in run_until_complete
return future.result()
File "<stdin>", line 2, in …Run Code Online (Sandbox Code Playgroud) 例如,我在某个URL下有一个Python文件
实际上,它不是要点,而是一些课件/家庭作业评论软件.
如何使用Google Colab打开此类网址,以便我可以运行Python代码?
我知道我可以为Github gists或存储库构建colab URL,但是我可以为任意URL做这个吗?