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* PyYAML: Permit `width: float` for pure-Python `dump(...)`
To prevent `PyYAML` from wrapping *any* lines, it's possible to pass
`width=float("inf")`, but the current type hints don't like that. This
works at runtime:
>>> s = yaml.dump({"foo": "bar" * 1000}, width=float("inf"))
>>> print(s)
foo: barbarbarbarbarbarbarbarbarbarbarbarbarbarbarbarbarbar...
but `mypy` says
floatwidth.py:2: error: No overload variant of "dump" matches argument types "Dict[str, str]", "float"
floatwidth.py:2: note: Possible overload variants:
floatwidth.py:2: note: def dump(data: Any, stream: _WriteStream[Any], Dumper: Any = ..., *, default_style: Optional[str] = ..., default_flow_style: Optional[bool] = ..., canonical: Optional[bool] = ..., indent: Optional[int] = ..., width: Optional[int] = ..., allow_unicode: Optional[bool] = ..., line_break: Optional[str] = ..., encoding: Optional[str] = ..., explicit_start: Optional[bool] = ..., explicit_end: Optional[bool] = ..., version: Optional[Tuple[int, int]] = ..., tags: Optional[Mapping[str, str]] = ..., sort_keys: bool = ...) -> None
floatwidth.py:2: note: def dump(data: Any, stream: None = ..., Dumper: Any = ..., *, default_style: Optional[str] = ..., default_flow_style: Optional[bool] = ..., canonical: Optional[bool] = ..., indent: Optional[int] = ..., width: Optional[int] = ..., allow_unicode: Optional[bool] = ..., line_break: Optional[str] = ..., encoding: Optional[str] = ..., explicit_start: Optional[bool] = ..., explicit_end: Optional[bool] = ..., version: Optional[Tuple[int, int]] = ..., tags: Optional[Mapping[str, str]] = ..., sort_keys: bool = ...) -> Any
Found 1 error in 1 file (checked 1 source file)
Poking through the `PyYAML` source, it looks the `width` parameter
could probably be anything "comparable", as it's only compared via
the `<` operator[1].
For the LibYAML implementation, however, we have to use `int`s:
>>> stream = StringIO()
>>> dumper = yaml.CDumper(stream, width=float("inf"))
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python3/dist-packages/yaml/cyaml.py", line 81, in __init__
version=version, tags=tags)
File "ext/_yaml.pyx", line 973, in _yaml.CEmitter.__init__ (ext/_yaml.c:14797)
OverflowError: cannot convert float infinity to integer