cz init leads to an exception

[jgosmann]

Description

After running cz init, I get an exception once I provided the tag format in a project using a pyproject.toml:

? Please choose a supported config file: (default: pyproject.toml)  pyproject.toml
? Please choose a cz (commit rule): (default: cz_conventional_commits)  cz_conventional_commits
? Is v0.1.0 the latest tag?  Yes
? Is "v$version" the correct tag format?  Yes
Traceback (most recent call last):
  File "/Users/jgosmann/Library/Caches/pypoetry/virtualenvs/plato-XLRNDDrc-py3.8/bin/cz", line 8, in <module>
    sys.exit(main())
  File "/Users/jgosmann/Library/Caches/pypoetry/virtualenvs/plato-XLRNDDrc-py3.8/lib/python3.8/site-packages/commitizen/cli.py", line 301, in main
    args.func(conf, vars(args))()
  File "/Users/jgosmann/Library/Caches/pypoetry/virtualenvs/plato-XLRNDDrc-py3.8/lib/python3.8/site-packages/commitizen/commands/init.py", line 40, in __call__
    self._update_config_file(values_to_add)
  File "/Users/jgosmann/Library/Caches/pypoetry/virtualenvs/plato-XLRNDDrc-py3.8/lib/python3.8/site-packages/commitizen/commands/init.py", line 157, in _update_config_file
    self.config.set_key(key, value)
  File "/Users/jgosmann/Library/Caches/pypoetry/virtualenvs/plato-XLRNDDrc-py3.8/lib/python3.8/site-packages/commitizen/config/toml_config.py", line 27, in set_key
    parser = parse(f.read())
  File "/Users/jgosmann/Library/Caches/pypoetry/virtualenvs/plato-XLRNDDrc-py3.8/lib/python3.8/site-packages/tomlkit/api.py", line 51, in parse
    return Parser(string).parse()
  File "/Users/jgosmann/Library/Caches/pypoetry/virtualenvs/plato-XLRNDDrc-py3.8/lib/python3.8/site-packages/tomlkit/parser.py", line 160, in parse
    key, value = self._parse_table()
  File "/Users/jgosmann/Library/Caches/pypoetry/virtualenvs/plato-XLRNDDrc-py3.8/lib/python3.8/site-packages/tomlkit/parser.py", line 1152, in _parse_table
    item = self._parse_item()
  File "/Users/jgosmann/Library/Caches/pypoetry/virtualenvs/plato-XLRNDDrc-py3.8/lib/python3.8/site-packages/tomlkit/parser.py", line 306, in _parse_item
    return self._parse_key_value(True)
  File "/Users/jgosmann/Library/Caches/pypoetry/virtualenvs/plato-XLRNDDrc-py3.8/lib/python3.8/site-packages/tomlkit/parser.py", line 397, in _parse_key_value
    val = self._parse_value()
  File "/Users/jgosmann/Library/Caches/pypoetry/virtualenvs/plato-XLRNDDrc-py3.8/lib/python3.8/site-packages/tomlkit/parser.py", line 667, in _parse_value
    raise self.parse_error(InvalidNumberError)
tomlkit.exceptions.InvalidNumberError: Invalid number at line 46 col 32

Running any other commitizen command after this seems to fail with the same exception. Also, it appends [tool.commitizen] to the last line (not below the last line) of the pyproject.toml, e.g.:

line_length = 88[tool.commitizen]

Steps to reproduce

Run cz init in a project with pyproject.toml. In case it only happens for specific pyproject.toml files, use the one from the v0.1.0 tag of py-plato/plato.

Current behavior

It throws the exception above. Also, it appends [tool.commitizen] to the last line (not below the last line) of the pyproject.toml, e.g.:

line_length = 88[tool.commitizen]

Desired behavior

No exception, and the pyproject.toml is correctly modified.

Environment

• commitizen version: 2.17.0
• python version: 3.8.7
• operating system: macOS Big Sur

[Lee-W]

Just confirm it. Will send a PR these days

[Lee-W]

@jgosmann We just fixed it. Please check whether it solves your problem on the latest version. Gonna close this issue.

[jgosmann]

Yes, that seems to fix it. The placement of the config in the pyproject.toml is a bit weird because there are two empty lines separating it from the previous section, and no empty line separating it from the next session. But that's only cosmetic.

btw: It seems that the publish step of the build pipeline failed. So 2.17.1 isn't available on PyPI yet.

[Lee-W]

Another PR #370 for this fix has been sent.