BUG: Can't handle nan

[Zeroto521]

Problem:

nan value is not None, so it will be skipped by check_for_none.
And nan is float and don't have len method, so check_empty_string raises an error.

>>> from thefuzz.fuzz import ratio
>>> ratio("a", float("nan"))  # or `np.nan`
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Users\Zero\mambaforge\envs\dtoolkit-dev\lib\site-packages\thefuzz\utils.py", line 38, in decorator
    return func(*args, **kwargs)
  File "C:\Users\Zero\mambaforge\envs\dtoolkit-dev\lib\site-packages\thefuzz\utils.py", line 29, in decorator
    return func(*args, **kwargs)
  File "C:\Users\Zero\mambaforge\envs\dtoolkit-dev\lib\site-packages\thefuzz\utils.py", line 46, in decorator
    if len(args[0]) == 0 or len(args[1]) == 0:
TypeError: object of type 'float' has no len()

Solution:

check_for_none need to be updated.
or create a new decorator for handling nan value.

thefuzz/thefuzz/utils.py

Lines 33 to 39 in 6e68af8

	def check_for_none(func):
	@functools.wraps(func)
	def decorator(*args, **kwargs):
	if args[0] is None or args[1] is None:
	return 0
	return func(*args, **kwargs)
	return decorator

[maxbachmann]

Now that rapidfuzz is used under the hood, this is working