vendored six module raises ImportWarning with Python 3.10 and 3.11a3

[grayjk]

Brief description

In Python 3.10 and 3.11a3, importing from scapy raises an ImportWarning:

$ python3.11 -W default
Python 3.11.0a3 (main, Jan  6 2022, 09:16:02) [GCC 7.5.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from scapy import base_classes
<frozen importlib._bootstrap>:1049: ImportWarning: _SixMetaPathImporter.find_spec() not found; falling back to find_module()
<frozen importlib._bootstrap>:673: ImportWarning: _SixMetaPathImporter.exec_module() not found; falling back to load_module()

The version of six (scapy/modules/six.py) in scapy is 1.10.0 which is missing implementations of find_spec and exec_module.

The fall back methods were deprecated beginning in Python 3.10: https://docs.python.org/3.10/whatsnew/3.10.html#deprecated

six version 1.16.0 includes the missing methods.

Scapy version

2.4.5

Python version

3.11a3

Operating system

Ubuntu 18.04

Additional environment information

No response

How to reproduce

$ python3.11 -W default
Python 3.11.0a3 (main, Jan  6 2022, 09:16:02) [GCC 7.5.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from scapy import base_classes
<frozen importlib._bootstrap>:1049: ImportWarning: _SixMetaPathImporter.find_spec() not found; falling back to find_module()
<frozen importlib._bootstrap>:673: ImportWarning: _SixMetaPathImporter.exec_module() not found; falling back to load_module()

Actual result

No response

Expected result

No response

Related resources

No response

[6r1d]

Can confirm on Artix with Scapy 2.4.5rc1.dev199, Python 3.10.2, IPython 8.0.1.
I see a series of:

<frozen importlib._bootstrap>:914: ImportWarning: _SixMetaPathImporter.find_spec() not found; falling back to find_module()
<frozen importlib._bootstrap>:671: ImportWarning: _SixMetaPathImporter.exec_module() not found; falling back to load_module()
<frozen importlib._bootstrap>:671: ImportWarning: _SixMetaPathImporter.exec_module() not found; falling back to load_module()```

[David-OConnor]

Same; python 3.10.1.

[yuanxpy]

but i use python 3.10.1；six 1.16.0，also have the warnings……

[p-l-]

For the record, Scapy no longer ships (or use) the six module. @wuzue this is Scapy repository, I don't think you project uses it.

[PabloCastellano]

I found this nice blog post explaining the root of this mysterious issue https://blog.pecar.me/six-warnings