Can't Run Gevent on Python3.7

[sompa...@gmail.com]

I am trying to run gevent for my Python 3.7.0b3 virtual env (ubuntu-1804)

I am getting the following error

Error: class uri 'gevent' invalid or not found:






[Traceback (most recent call last):

  File "/opt/superset-prod/prodsuperset/lib/python3.7/site-packages/gunicorn/util.py", line 99, in load_class

    mod = importlib.import_module('.'.join(components))

  File "/usr/lib/python3.7/importlib/__init__.py", line 127, in import_module

    return _bootstrap._gcd_import(name[level:], package, level)

  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import

  File "<frozen importlib._bootstrap>", line 983, in _find_and_load

  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked

  File "<frozen importlib._bootstrap>", line 677, in _load_unlocked

  File "<frozen importlib._bootstrap_external>", line 726, in exec_module

  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed

  File "/opt/superset-prod/prodsuperset/lib/python3.7/site-packages/gunicorn/workers/ggevent.py", line 14, in <module>

    import gevent

  File "/opt/superset-prod/prodsuperset/lib/python3.7/site-packages/gevent/__init__.py", line 98, in <module>

    from gevent.os import fork

  File "/opt/superset-prod/prodsuperset/lib/python3.7/site-packages/gevent/os.py", line 495, in <module>

    _raw_posix_spawnp = os.posix_spawnp

AttributeError: module 'os' has no attribute 'posix_spawnp'

Any Help regarding this ?

[Jason Madden]

In short, please upgrade your Python to a released version. gevent does not support Python 3.7 beta 3, but does support released versions; gevent is currently tested against 3.7.5 and 3.7.7.

`posix_spawn` and `posix_spawnp` are APIs that were added to Python 3.8. Unfortunately, in Python 3.7.0b1, a preliminary version of `posix_spawn` was added, *without* adding `posix_spawnp`. This was later removed in 3.7.0b5 because the API was considered too unfinished; gevent relies on both APIs being available if one is. Consequently, it won't run on 3.7b1 through 3.7b4 at least.

~Jason

[Grady Player]

It sounds like you haven’t installed gevent in your virtual env...

With that venv active run

pip install gevent

Grady

Sent from my iPhone

On Aug 30, 2020, at 8:19 AM, sompa...@gmail.com wrote:



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[Akash Agrawal]

If you're getting this in late 2022 or later, this might be of interest: https://github.com/python-greenlet/greenlet/issues/178

gevent 20.9.0 had an unbounded dependency on greenlet, and they just released a breaking change. Pinning the greenlet version seems to help here.