等待Python调试器中的异步函数 [英] Await an async function in Python debugger

问题描述

在Python调试器中是否可以await任意调用async函数?

Is it possible to await arbitrary calls to an async function when inside a Python debugger?

说我在某些main.py文件中有以下代码:

Say I have the following code in some main.py file:

import asyncio

async def bar(x):
    return x + 1

async def foo():
    import ipdb; ipdb.set_trace()

asyncio.run(foo())

现在，我想测试在调试器中使用某些参数调用bar()来测试结果.发生以下情况:

Now I want to test calling bar() with some argument inside the debugger to test the results. The following happens:

$ python3 main.py
> /Users/user/test/main.py(8)foo()
      7     import ipdb; ipdb.set_trace()
----> 8     return None
      9

ipdb> bar(1)
<coroutine object bar at 0x10404ae60>
main.py:1: RuntimeWarning: coroutine 'bar' was never awaited
  import asyncio
RuntimeWarning: Enable tracemalloc to get the object allocation traceback
ipdb> await bar(1)
*** SyntaxError: 'await' outside function

当然，我可以通过在ipdb.set_trace()上方放置x = await bar(1)，然后检查结果来解决此问题，但是，当调试器处于活动状态时，我无法尝试实时调用函数.

Of course, I can get around this by having x = await bar(1) above my ipdb.set_trace(), and then inspecting the results, but then I can't try calling my functions in real time while the debugger is active.

推荐答案

自 bpo-37028

Seems like there's starting to be more support for this feature since Python 3.8. In particular, look at this issue bpo-37028

如果您仍在使用Python 3.7，也许 aiomonitor 可能支持此功能在一定程度上具有特色.

If you're still on Python 3.7, maybe aiomonitor could have something that supports this feature to a certain extent.

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