the frequency in the loaded dictionary is absolute, not relative

[Rigonz]

Although the examples included in the documentation show absolute frequencies (counts, integers), frequencies can also be expressed in relative form, as a ratio, and then are of type float.
If the dictionary is loaded with relative frequencies, the load_dictionary returns True, but the calls to lookup do not actually work. In fact, the dictionary is not loaded (more precisely: it is empty as shown by a print(list(islice(sym_spell.words.items(), 5)))).
If this issue is related to the type of the frequency data, as I think, then I suggest that it is more clearly indicated in the documentation that the frequencies must be of type integer. It is true that the documentation of the load_dictionary states that the dictionary is a file of word/frequency count pairs , but still my suggestion is that this data type requirement is emphasized.
Alternatively, the loader could be made to convert the frequencies from relative to absolute form.