(instance.py) ValueError when casting empty string to float

[RobertSudwarts]

See instance.py / _extract_non_fraction_value() / line 639

scaled_value = float(fact_value) * pow(10, value_scale)

If fact_value is an empty string ('') the line above raises "ValueError: could not convert string to float: '' "

if fact_value == '': return None, inserted before this line as a short-circuit will prevent this but I do not know what the side-effects would be.

Thoughts, anyone?

[manusimidt]

Hi, yes, I can see how this can get problematic. Even though, according to the XBRL Specification, it must have a "xsi:nil" attribute in case it is emtpy.
But anyways, would be probably nice to catch. Do you have a submission example where this leads to a crash or the libary?