dumps() doesn't support tuple

[pklapperich]

This is almost a drop-in replacement for the toml library. But an issue I ran into is lack of support for tuples, which toml converts to lists.

In[50]: import toml
In[51]: import tomlkit
In[52]: x={'section': {'tuple_value': (1,2)}}
In[53]: tomlkit.dumps(x)
Out[53]: Traceback (most recent call last):
  File "C:\projects\foo\.venv\lib\site-packages\IPython\core\interactiveshell.py", line 3457, in run_code
    exec(code_obj, self.user_global_ns, self.user_ns)
  File "<ipython-input-53-add147bf2e5e>", line 1, in <module>
    tomlkit.dumps(x)
  File "C:\projects\foo\.venv\lib\site-packages\tomlkit\api.py", line 49, in dumps
    data = item(dict(data), _sort_keys=sort_keys)
  File "C:\projects\foo\.venv\lib\site-packages\tomlkit\items.py", line 92, in item
    val[k] = item(v, _parent=val, _sort_keys=_sort_keys)
  File "C:\projects\foo\.venv\lib\site-packages\tomlkit\items.py", line 92, in item
    val[k] = item(v, _parent=val, _sort_keys=_sort_keys)
  File "C:\projects\foo\.venv\lib\site-packages\tomlkit\items.py", line 152, in item
    raise ValueError(f"Invalid type {type(value)}")
ValueError: Invalid type <class 'tuple'>
In[54]: toml.dumps(x)
Out[54]: '[section]\ntuple_value = [ 1, 2,]\n'

I think the way the toml library handles this is there's a fall back method that converts unrecognized iterables to lists, and so that catches tuples.