Parsing pyproject.toml fails if there's an array

[katsuya-horiuchi]

When there's an array under tool section in pyproject.toml, parsing fails.

Example

This example contains array under tool. Then you can call radon to do analysis.

[tool.radon]
exclude = "test_*.py"
cc_min = "B"

[[tool.foo]]
key = "value1"

[[tool.foo]]
key = "value2"

The above looks like this in json format and I believe it is syntactically correct:

{
    "tool":{
        "radon":{
            "exclude":"test_*.py",
            "cc_min":"B"
        },
        "foo":[
            {
                "key":"value1"
            },
            {
                "key":"value2"
            }
        ]
    }
}

As data for foo is list, not dict, you get an exception.

Traceback

Traceback (most recent call last):
  File "DIR/radon/env/bin/radon", line 8, in <module>
    sys.exit(main())
             ^^^^^^
  File "DIR/radon/radon/__init__.py", line 10, in main
    from radon.cli import program, log_error
  File "DIR/radon/radon/cli/__init__.py", line 90, in <module>
    _cfg = FileConfig()
           ^^^^^^^^^^^^
  File "DIR/radon/radon/cli/__init__.py", line 45, in __init__
    self.file_cfg = self.file_config()
                    ^^^^^^^^^^^^^^^^^^
  File "DIR/radon/radon/cli/__init__.py", line 85, in file_config
    config.read_dict(FileConfig.toml_config())
  File "/opt/homebrew/Cellar/python@3.12/3.12.11/Frameworks/Python.framework/Versions/3
.12/lib/python3.12/configparser.py", line 734, in read_dict
    for key, value in keys.items():
                      ^^^^^^^^^^
AttributeError: 'list' object has no attribute 'items'

Solution

Fixing this issue is easy as you should just ignore everything under tool that is not related to radon.