AssertionError: assert encoding is not None

Nuitka version, full Python version, flavor, OS, etc. as output by this

command (it does more than you think, and we are adding more all the time):

python -m nuitka --version

0.7.6
Commercial: None
Python: 3.8.12 (default, Oct 12 2021, 13:49:34)
Flavor: Anaconda Python
Executable: /root/miniconda3/envs/py38/bin/python
OS: Linux
Arch: x86_64
Distribution: Ubuntu (based on Debian) 20.04.1

How did you install Nuitka and Python

I used pip install nuitka installed Nuitka.

• I’m sure I install nuitka succeed
• I use nuitka on Windows10 by wsl.

What error did I get?

I had a sanic server codes. And I used this command to generate *.bin file: python3 -m nuitka --follow-imports --plugin-enable=pylint-warnings -o ./server.bin --remove-output --show-scons --static-libpython=no cx_api_server/server.py

Then, I got this error:

...
Nuitka-Plugins:INFO: implicit-imports: Implicit dependencies of module 'pkg_resources._vendor.packaging' added 'pkg_resources._vendor.packaging.version,pkg_resources._vendor.packaging.specifiers,pkg_resources._vendor.packaging.requirements'.
PASS 1:  97%|█████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████▉    | 579/597, sanic.response
...
...
...
Problem with statement at /root/miniconda3/envs/py38/lib/python3.8/site-packages/sanic/response.py:37:
-> class BaseHTTPResponse:
Nuitka:INFO: Interrupted while working on '<Node 'COMPILED_PYTHON_MODULE' with {'filename': '/root/miniconda3/envs/py38/lib/python3.8/site-packages/sanic/response.py', 'module_name': <ModuleName sanic.response>, 'code_flags': ''}>'.
PASS 1:  97%|█████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████▉    | 579/597, sanic.response
...
...
 File "/root/miniconda3/envs/py38/lib/python3.8/site-packages/nuitka/specs/BuiltinParameterSpecs.py", line 679, in extractBuiltinArgs
    result = builtin_class(*args_list, source_ref=node.getSourceReference())
  File "/root/miniconda3/envs/py38/lib/python3.8/site-packages/nuitka/nodes/AttributeNodesGenerated.py", line 604, in wrapExpressionStrOperationEncode
    return ExpressionStrOperationEncode3(
  File "/root/miniconda3/envs/py38/lib/python3.8/site-packages/nuitka/nodes/StrNodes.py", line 1404, in __init__
    assert encoding is not None
AssertionError

[kayhayen]

This is now on develop and will be in 0.8 release. I actually found another similar bug for str.split and str.rsplit when enhancing the test to cover terminal keyword arguments.

[kayhayen]

Part of 0.8 release that I just made.