Error "AttributeError: 'str' object has no attribute '__name__'"

[soimkim]

Description

When executing scancode, the following error message occurs.

$ scancode -h
Traceback (most recent call last):
  File "/home/worker/venv3/bin/scancode", line 5, in <module>
    from scancode.cli import scancode
  File "/home/worker/venv3/lib/python3.6/site-packages/scancode/cli.py", line 108, in <module>
    plugin_classes, plugin_options = PluginManager.load_plugins()
  File "/home/worker/venv3/lib/python3.6/site-packages/plugincode/__init__.py", line 207, in load_plugins
    mgr_setup = manager.setup()
  File "/home/worker/venv3/lib/python3.6/site-packages/plugincode/__init__.py", line 231, in setup
    self.manager.load_setuptools_entrypoints(entrypoint)
  File "/home/worker/venv3/lib/python3.6/site-packages/pluggy/manager.py", line 299, in load_setuptools_entrypoints
    plugin = ep.load()
  File "/home/worker/venv3/lib/python3.6/site-packages/importlib_metadata/__init__.py", line 166, in load
    module = import_module(match.group('module'))
  File "/usr/lib/python3.6/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "/home/worker/venv3/lib/python3.6/site-packages/summarycode/classify.py", line 58, in <module>
    class FileClassifier(PreScanPlugin):
  File "/home/worker/venv3/lib/python3.6/site-packages/summarycode/classify.py", line 108, in FileClassifier
    sort_order=50,
  File "/home/worker/venv3/lib/python3.6/site-packages/commoncode/cliutils.py", line 386, in __init__
    **kwargs
  File "/home/worker/venv3/lib/python3.6/site-packages/click/core.py", line 2467, in __init__
    super().__init__(param_decls, type=type, multiple=multiple, **attrs)
  File "/home/worker/venv3/lib/python3.6/site-packages/click/core.py", line 2039, in __init__
    self.type = convert_type(type, default)
  File "/home/worker/venv3/lib/python3.6/site-packages/click/types.py", line 1022, in convert_type
    return FuncParamType(ty)
  File "/home/worker/venv3/lib/python3.6/site-packages/click/types.py", line 158, in __init__
    self.name = func.__name__
AttributeError: 'str' object has no attribute '__name__'

How To Reproduce

pip3 install scancode-toolkit
scancode -h

System configuration

For bug reports, it really helps us to know:

• What OS are you running on? Ubuntu 18.04
• What version of scancode-toolkit was used to generate the scan file?21.3.31
• What installation method was used to install/run scancode?pip

[jmbowman]

This looks like an incompatibility with click 8.0.0, which was just released 2 days ago. Downgrading to click 7.1.2 seems to work until the code gets updated accordingly.

[pombredanne]

Thanks! I guess no good deed goes unpunished then, as I had removed an upper bound on click version to accommodate for possible conflicts that required a v7 in 2b986e7
Then 7.0.0 failed was a problem and needed skipping .... so I guess we can set an upper bound of <8.0 for now?

[danielthieleog]

pip install "click<8.0 installed 7.1.2. That worked for me with python 3.9

[soimkim]

As the comment, I installed with click 7.1.2, so no error occurred.
Thanks for answering.

[pombredanne]

@soimkim actually this is a bug alright. See #2529 and aboutcode-org/commoncode#19

[pombredanne]

This is fixed in v21.6.7 and up. Thanks!