python3.8/site-packages/httpcore/_backends/anyio.py:198: RuntimeWarning: coroutine 'current_time' was never awaited return float(anyio.current_time())

[yangkaipeng]

when I use the version 0.18.0+, there will be an issue described with "python3.8/site-packages/httpcore/_backends/anyio.py:198: RuntimeWarning: coroutine 'current_time' was never awaited return float(anyio.current_time())" . I just code it with python-asyncio. When I update my httpx version on 0.17.1, it is been resovled. SO I think it may be an issue about 0.18.0+

[lovelydinosaur]

Thanks for the report!

Could you include a complete traceback for this please?
What's the minimum amount of code you can demonstrate that reproduces the issue?

[yangkaipeng]

I am sorry that I can't reappear this issue now. But I will paste my code here next time for you . Thank you very much

[pltnk]

Stumbled upon the same issue just now while trying to send requests from Python console using HTTPX 0.18.2.

/opt/anaconda3/bin/python /snap/pycharm-professional/248/plugins/python/helpers/pydev/pydevconsole.py --mode=client --port=39383
import sys; print('Python %s on %s' % (sys.version, sys.platform))
sys.path.extend(['/home/pltnk/GitHub/toptracksbot'])
Python 3.8.10 (default, Jun  4 2021, 15:09:15) 
Type 'copyright', 'credits' or 'license' for more information
IPython 7.22.0 -- An enhanced Interactive Python. Type '?' for help.
PyDev console: using IPython 7.22.0
Python 3.8.10 (default, Jun  4 2021, 15:09:15) 
[GCC 7.5.0] on linux

Here is the code:

import httpx
async with httpx.AsyncClient() as client:
    res = await client.get("http://example.com")

And traceback:

/opt/anaconda3/lib/python3.8/site-packages/httpcore/_backends/anyio.py:198: RuntimeWarning: coroutine 'current_time' was never awaited
  return float(anyio.current_time())
RuntimeWarning: Enable tracemalloc to get the object allocation traceback
Traceback (most recent call last):
  File "/opt/anaconda3/lib/python3.8/site-packages/IPython/core/interactiveshell.py", line 3435, in run_code
    await eval(code_obj, self.user_global_ns, self.user_ns)
  File "<ipython-input-3-74e0c15e1218>", line 2, in <module>
    res = await client.get("http://example.com")
  File "/opt/anaconda3/lib/python3.8/site-packages/httpx/_client.py", line 1722, in get
    return await self.request(
  File "/opt/anaconda3/lib/python3.8/site-packages/httpx/_client.py", line 1481, in request
    response = await self.send(
  File "/opt/anaconda3/lib/python3.8/site-packages/httpx/_client.py", line 1568, in send
    response = await self._send_handling_auth(
  File "/opt/anaconda3/lib/python3.8/site-packages/httpx/_client.py", line 1604, in _send_handling_auth
    response = await self._send_handling_redirects(
  File "/opt/anaconda3/lib/python3.8/site-packages/httpx/_client.py", line 1640, in _send_handling_redirects
    response = await self._send_single_request(request, timeout)
  File "/opt/anaconda3/lib/python3.8/site-packages/httpx/_client.py", line 1681, in _send_single_request
    ) = await transport.handle_async_request(
  File "/opt/anaconda3/lib/python3.8/site-packages/httpx/_transports/default.py", line 283, in handle_async_request
    ) = await self._pool.handle_async_request(
  File "/opt/anaconda3/lib/python3.8/site-packages/httpcore/_async/connection_pool.py", line 218, in handle_async_request
    await self._keepalive_sweep()
  File "/opt/anaconda3/lib/python3.8/site-packages/httpcore/_async/connection_pool.py", line 303, in _keepalive_sweep
    now = await self._backend.time()
  File "/opt/anaconda3/lib/python3.8/site-packages/httpcore/_backends/auto.py", line 64, in time
    return await self.backend.time()
  File "/opt/anaconda3/lib/python3.8/site-packages/httpcore/_backends/anyio.py", line 198, in time
    return float(anyio.current_time())
TypeError: float() argument must be a string or a number, not 'coroutine'

NOTE: For me this issue appears only when running code from console. When running my app in Docker container it's all good.

[lovelydinosaur]

Looks like you've got an out-of-date version of anyio installed there. (I think you've got version 2.x installed, while the latest versions of httpcore expect 3.x)

Not clear why that'd be occurring, since httpcore does pin to anyio 3.* in it's setup.py. Perhaps some manual installing/uninstalling of packages accidentally got things into a broken state.

You'd be able to resolve this by making sure that you update each of httpx, httpcore, anyio to the latest versions.